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Scaling of thin wire cylindrical compression with material,diameter,and laser energy after 100 fs Joule surface heating 认领 引用
1
作者 L.Yang M.-L.Herbert +32 位作者 C.Baehtz V.Bouffetier E.Brambrink T.Dornheim N.Fefeu T.Gawne S.Goede J.Hagemann H.Hoppner L.G.Huang O.Humphries T.Kluge D.Kraus J.Lütgert J.-P.Naedler M.Nakatsutsumi A.Pelka T.R.Preston C.B.Qu S.V.Rahul L.Randolph R.Redmer M.Rehwald J.J.Santos M.Smíd U.Schramm J.-P.Schwinkendorf M.Vescovi U.Zastrau K.Zeil A.Laso Garcia T.Toncian T.E.Cowan 《Matter and Radiation at Extremes》 SCIE EI CAS CSCD 2026年第1期68-80,共13页
We present the first systematic experimental validation of return-current-driven cylindrical implosion scaling in micrometer-sized Cu and Al wires irradiated by J-class femtosecond laser pulses.Employing XFEL-based im... We present the first systematic experimental validation of return-current-driven cylindrical implosion scaling in micrometer-sized Cu and Al wires irradiated by J-class femtosecond laser pulses.Employing XFEL-based imaging with sub-micrometer spatial and femtosecond temporal resolution,supported by hydrodynamic and particle-in-cell simulations,we reveal how return current density depends precisely on wire diameter,material properties,and incident laser energy.We identify deviations from simple theoretical predictions due to geometrically influenced electron escape dynamics.These results refine and confirm the scaling laws essential for predictive modeling in high-energy-density physics and inertial fusion research. 展开更多
关键词 cylindrical implosion scaling laser energy thin wire cylindrical compression material cu al wires diameter systematic experimental validation
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How Al is revolutionizing the chemical engineering landscape 认领 引用
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作者 Guzhong Chen Zhen Song Zhiwen Qi 《ENGINEERING Chemical Engineering》 SCIE EI CAS CSCD 2026年第6期79-86,共8页
1 Introduction Artificial intelligence(Al)has rapidly emerged as a transformative force across the chemical engineering field.From academia to industry,chemical engineers are leveraging data-driven models and advanced... 1 Introduction Artificial intelligence(Al)has rapidly emerged as a transformative force across the chemical engineering field.From academia to industry,chemical engineers are leveraging data-driven models and advanced algorithms to optimize production,enhance safety,design novel processes and materials,and even generate new scientific insights.In recent years,the number of publications and projects applying machine learning(ML)and AI in process systems engineering(PSE),industrial data science,and chemical engineering more broadly has skyrocketed[1-3]. 展开更多
关键词 optimize productionenhance safetydesign novel processes materialsand process systems engineering pse industrial chemical eng generate new scientific insightsin artificial intelligence al machine learning ml advanced algorithms artificialintelligence
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Designing High-Strength and High-Ductility Cast Mg-Zn-Al-Mn-Sn Alloys via τ-Mg32(Al,Zn)49 Phase Tuning and Twin Boundary Toughening Optimisation 认领 引用
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作者 Yun-Xuan Zhou Wen-Jun Tian +6 位作者 Hao Lv Quan Dong Hong Yang Pu-Hua Yu Jun Tan Xian-Hua Chen Fu-Sheng Pan 《Rare Metals》 SCIE EI CAS CSCD 2026年第2期307-322,共16页
Achieving a simultaneous enhancement of strength and ductility remains a critical bottleneck for the large-scale and cost-effective engineering application of magnesium alloys.In this work,guided by first-principles c... Achieving a simultaneous enhancement of strength and ductility remains a critical bottleneck for the large-scale and cost-effective engineering application of magnesium alloys.In this work,guided by first-principles calculations,we tailored theτ-Mg32(Al,Zn)49 phase and optimised twin boundary,thereby designing and successfully synthesising a series of low-cost high-performance Mg-10Zn-4Al-0.4Mn-x Sn(x=0.0,0.2,0.4,0.6;labelled as ZAM-x T)alloys.First-principles calculations demonstrated that theτ-Mg32(Al,Zn)49 phase reached optimal elastic properties at a Zn/Al ratio of 2:1,and that Sn was the most effective alloying element for Mg twin boundary strengthening.Moreover,experimental results showed that the main phases in the ZAM-x T alloys consisted ofα-Mg,τ-Mg32(Al,Zn)49,AlMn and Al8Mn5,with the Zn/Al atomic ratio in theτ-Mg32(Al,Zn)49 phase maintaining a 2:1 proportion.The aged ZAM-0.6T alloy exhibited an ultimate tensile strength of 334 MPa,a yield strength of 191 MPa and an elongation of 11.8%,whereas the aged ZAM-0.4T alloy had the highest Young's modulus,reaching48 GPa.In addition,Orowan and grain boundary strengthening were identified as the primary strengthening mechanisms,contributing 108 and 40 MPa,respectively,to the yield strength of the ZAM-0.6T alloy.This study demonstrated the use of first-principles calculations to design phase stability and interfacial strength,guiding alloying element selection to accelerate the development of high-strength ductile magnesium alloys,minimise experimental trial-and-error and advance lightweight cast alloy applications. 展开更多
关键词 τ-Mg32(Al,Zn)49 phase double-stage ageing first-principles calculations magnesium alloys mechanical properties
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Thermal pre-activating of Al/Ni energetic composites for enhanced catalytic decomposition of ammonium perchlorate 认领 引用
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作者 Kan Xie Zhi-Yu Zhang +5 位作者 Wanxin Zhou Shuang Li Weijia Ren Minghai Dong Su-Lan Yang Bin Tian 《Defence Technology（防务技术）》 SCIE EI CAS CSCD 2026年第7期317-327,共11页
The dynamic transformation of catalysts under thermal stimuli presents a promising yet underexplored strategy for modulating solid propellant reactions.This study proposes a thermal pretreatment protocol to reconstruc... The dynamic transformation of catalysts under thermal stimuli presents a promising yet underexplored strategy for modulating solid propellant reactions.This study proposes a thermal pretreatment protocol to reconstruct Al/Ni energetic composites and investigates their catalytic efficacy on ammonium perchlorate(AP)decomposition.Novel composite formulations were fabricated via an integrated pro-cedure involving liquid-phase dispersion and thermal treatment at 400°C.Characterization results reveal that thermal pretreatment triggers significant microstructural reconstruction to form a contin-uous interfacial layer and new crystalline phases including NiO and AlCl3.This microstructural evolution indicates vigorous solid-gas reactions during the activation process.Compared to pure AP,the recon-structed composite(R/AP)significantly increases the decomposition enthalpy by 84%from 1190 to 2192 J/g.It also lowers the high-temperature decomposition peak by over 23°C and narrows the re-action temperature window by 54.9°C.Kinetic analysis demonstrates that R/AP exhibits superior kinetic stability,evidenced by a minimal shift in decomposition temperature of 28 C under varying heating rates and an exceptionally stable low-temperature activation energy ranging from 75.2 to 78.0 kJ/mol.Furthermore,bomb calorimetry testing shows the heat of reaction of R/AP reaches 5187.3 J/g,exceeding that of pure AP by 32%.The decomposition mechanism is found to evolve from well-defined models for pure AP to complex hybrid mechanisms for the composites.This work underscores that thermal pre-activation is a potent strategy to programmatically tailor both the energy release and kinetic charac-teristics of AP decomposition,offering fresh insights for designing high-performance solid propellant additives. 展开更多
关键词 Al/Ni Catalysts Thermal decomposition Decomposition kinetics
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Influence of porous structures with small unit cell on mechanical properties of porous titanium dental implants fabricated by selective laser melting 认领 引用
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作者 Lu-man LIAO Rui-min TANG +4 位作者 Kai WANG Li YI Yi-long DAI Xiao-yong ZHANG Liang-jian CHEN 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第4期1152-1165,共14页
Based on the application requirements for porous dental implants,four porous structures of gyroid,RD(rhombic dodecahedron),cubic,and CHC(three identical cylinders hollow cubic)for porous titanium implants have been de... Based on the application requirements for porous dental implants,four porous structures of gyroid,RD(rhombic dodecahedron),cubic,and CHC(three identical cylinders hollow cubic)for porous titanium implants have been designed and fabricated using selective laser melting(SLM)technology.Typically,the unit cell dimensions range from 0.5 to 1.6 mm,with pore diameters between 300 and 900μm,achieving porosities of 60%-80%.The influence of porous structures with small unit cell on scaffold formability and mechanical properties was investigated through compression,torsion tests as well as finite element simulations.Consequently,gyroid scaffolds exhibit optimal formability with the lowest porosity and pore deviation.With the same porosity,gyroid and RD scaffolds exhibit lower compressive strength than cubic and CHC scaffolds,yet their torsional properties show an inverse relationship.Moreover,gyroid scaffolds possess the highest torque but the lowest compressive strength and elastic modulus.The gyroid scaffold with 60%porosity shows a modulus of 3.96 GPa,matching bone modulus of 0-30 GPa.Its compressive strength reaches 176.3 MPa,exceeding that of bone by 100 MPa.Additionally,the torque for the d4.0 mm implant is 2.22 N·m,approaching the FDA safe torque of 2.3 N·m.Therefore,the gyroid represents the most ideal structure for porous dental implants. 展开更多
关键词 dental implant pore structures Ti6Al4V selective laser melting finite element analysis small unit cell
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Impact of Ni3Al Addition on Structure and Properties of Ultrafine-grained WC-Ni3Al Cemented Carbides by Spark Plasma Sintering 认领 引用
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作者 YANG Meijun KUANG Haifeng +3 位作者 LIN Liangliang LI Qizhong TU Rong ZHANG Song 《Journal of Wuhan University of Technology(Materials Science)》 SCIE EI CAS CSCD 2026年第4期916-926,共11页
At temperatures ranging from 1210 to 1270℃,pressure for 40 MPa and holding time for 10 min,higher density ultrafine-grained WC-Ni3Al cemented carbides with Ni3Al contents ranging from 5wt%to 20wt%were fabricate... At temperatures ranging from 1210 to 1270℃,pressure for 40 MPa and holding time for 10 min,higher density ultrafine-grained WC-Ni3Al cemented carbides with Ni3Al contents ranging from 5wt%to 20wt%were fabricated using spark plasma sintering.The influence of Ni3Al addition on the structure and properties of the WC-Ni3Al composites was investigated and characterized.The experimental results demonstrate that Ni3Al addition affects the sintering behavior of WC-Ni3Al cemented carbides.During sintering,Ni3Al possesses higher interfacial energy,thus inhibits the growth of WC grains,resulting in an average grain size of 280-330 nm of WC-Ni3Al composites,which is classified as ultrafine-grained.Furthermore,the increase in Ni3Al content results in a decrease in hardness but an improvement in fracture toughness.When the Ni3Al content reaches 15wt%,it aggregates to form"Ni3Al pools",resulting in a significant hardness reduction of 14.02%compared to WC-10wt%Ni3Al composites.More fracture energy is consumed by cracks passing through the"Ni3Al pools",thus enhancing the toughness of the material.The optimal comprehensive properties are obtained with a Ni3Al content of 10wt%,exhibiting a hardness of 1866.8 HV,a fracture toughness of 11.79 MPa·m1/2,achieved a great balance between high hardness and high toughness than that of other studies. 展开更多
关键词 Ni3Al addition ultrafine-grained WC-Ni3Al cemented carbide spark plasma sintering mechanical properties
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Discussion of the influence of Al content on the microstructure and mechanical properties of Mg-xAl-Zn alloys fabricated by wire arc additive manufacturing 认领 引用
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作者 Yuxuan Tu Dongdong Zheng +4 位作者 Zhuo Li Ze Xu Deqiang Chen Chenghang Zhang Huaming Wang 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第2期480-496,共17页
Aluminum(Al)acts as the primary alloying element in Mg-Al-Zn alloys,so its content is of crucial importance for the samples fabricated by wire arc additive manufacturing(WAAM).However,microstructure and property fluct... Aluminum(Al)acts as the primary alloying element in Mg-Al-Zn alloys,so its content is of crucial importance for the samples fabricated by wire arc additive manufacturing(WAAM).However,microstructure and property fluctuations of the alloys induced by varying WAAM processes hinder the extracting of consistent Al content-microstructure-property relationships from existing studies.In this study,Mg-xAl-Zn(x=3,6,9,12)alloys were fabricated via WAAM using consistent process parameters to focus on the influence of Al content alone.The results indicate that all of the four alloys primarily consist ofα-Mg grains and Mg17Al12 phase.As Al content increases,theα-Mg grain size decreases from 43.1μm in Mg-3Al-Zn to 19.7μm in Mg-12Al-Zn.The content of Mg17Al12 phase increases from near 0%in Mg-3Al-Zn to 7.78%in Mg-12Al-Zn,and a sudden increase observed when Al content reached 12 wt%.The microhardness and yield strength of WAAM Mg-xAl-Zn alloys increase linearly with the increasing of Al content,which is attributed to the synergistic effects of grain refinement strengthening,solid solution strengthening,and second-phase strengthening induced by Al content.However,when the Al content reaches 9 wt%,the elongation and tensile strength decreased because of the excessive Mg17Al12 phase.Among the investigated alloys,Mg-6Al-Zn achieves the optimal strength-ductility balance,with a tensile strength of 266.3±0.4 MPa and an elongation of 13.9±1.4%.Thus,alloys with an Al content of approximately 6 wt%exhibit favorable performance and can be used without heat treatment,while those with Al content exceeding 9 wt%require heat treatment to optimize microstructure and improve ductility. 展开更多
关键词 Mg-Al-Zn alloy Al content Wire arc additive manufacturing Mechanical properties Microstructure
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Electrical Transport and Quantum Oscillations in the Metallic Spin Supersolid EuCo2Al9 认领 引用
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作者 Xitong Xu Yonglai Liu +16 位作者 Ning Xi Mingfang Shu Haitian Zhao Jiajun Xie Guoliang Wu Hao Chen Miao He Pengzhi Chen Ze Wang Zhentao Wang Chuanying Xi Mingliang Tian Haifeng Du Jie Ma Xi Chen Wei Li Zhe Qu 《Chinese Physics Letters》 SCIE EI CAS CSCD 2026年第5期182-187,共6页
The discovery of spin supersolid and its giant magnetocaloric effect has opened a new arena in frustrated quantum magnets and cutting-edge cryogenics.The intermetallic EuCo2Al9(ECA),for the first time,extends th... The discovery of spin supersolid and its giant magnetocaloric effect has opened a new arena in frustrated quantum magnets and cutting-edge cryogenics.The intermetallic EuCo2Al9(ECA),for the first time,extends this intriguing phase from Mott insulators to a highly conductive metal.In this work,we systematically study the electrical transport properties of ECA,where itinerant electrons serve as a sensitive probe of the spin supersolid state.We observe anomalies both in the temperature-dependent resistivity and in the field-dependent magnetoresistance and Hall signals,which are attributed to the response of electrons to the Eu2+spins and their fluctuations.Moreover,Shubnikov-de Haas quantum oscillations at high magnetic fields reveal pronounced band splitting in the spin-polarized state.Our results reveal an intimate correspondence between electrical transport and magnetic transitions in ECA,deepening the understanding of this metallic spin supersolid. 展开更多
关键词 electrical transport EuCo Al itinerant electrons quantum oscillations mott insulators quantum magnets electrical transport properties spin supersolid
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Regulating active sites of Cu/Al₂O₃by various-OH groups on Al₂O₃and investigating its bactericidal performance before and after phosphorization 认领 引用
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作者 Chaoyang Peng Xueli Guo +1 位作者 Lian Wang Hong He 《Journal of Environmental Sciences》 SCIE EI CAS CSCD 2026年第7期11-18,共8页
Increasing dispersion of metal active components by regulating supports is a crucial way for developing high-efficient and low-cost antibacterial materials.Based on variation of the calcination temperature of pseudobo... Increasing dispersion of metal active components by regulating supports is a crucial way for developing high-efficient and low-cost antibacterial materials.Based on variation of the calcination temperature of pseudoboehmite(AlOOH)precursor to regulate hydroxyl functional groups(-OH groups)of Al₂O₃,the roles of-OH groups in anchoring and dispersing Cu species on Cu/Al₂O₃material were systematically investigated in this study.At the same time,the bactericidal activities and underlying mechanism of Cu/Al₂O₃before and after phosphorization were thoroughly examined.Key findings revealed that the presence of terminal-OH groups and double-bridging-OH groups is crucial for effectively anchoring Cu atoms and enhancing their dispersion,resulting in robust bactericidal activity even at low Cu loading levels.Furthermore,phosphidation treatment significantly improved bactericidal activity by reducing Cu²⁺ to Cu⁺ and promoting the generation of superoxide radicals.Importantly,the synergistic oxidative damage of cellular membrane induced by extracellular reactive oxygen species(ROS)and intracellular ROS accumulation was found to be the primary mechanism of bacterial death.These findings provide insights into designing antimicrobial materials through hydroxyl‑mediated metal anchoring and phosphidation treatment. 展开更多
关键词 Bactericidal performance Cu/Al₂O₃ Hydroxyl functional groups(-OH groups) Phosphidation Superoxide radicals
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Seeing amyotrophic lateral sclerosis in a multi-omic perspective 认领 引用
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作者 Natalie Dikwella Paul Lingor Laura Tzeplaeff 《Neural Regeneration Research》 SCIE CAS CSCD 2026年第8期3567-3568,共2页
Amyotrophic lateral sclerosis(ALS)is a rapidly progressing neurodegenerative disease,leading to muscle weakness,paralysis and ultimately death due to respiratory failure.Currently licensed drugs have only very limited... Amyotrophic lateral sclerosis(ALS)is a rapidly progressing neurodegenerative disease,leading to muscle weakness,paralysis and ultimately death due to respiratory failure.Currently licensed drugs have only very limited effects on slowing down disease progression or biomarkers.Despite numerous successful preclinical analyses,most new drugs fail when translated to clinical trials(Petrov et al.,2017).This is believed to be,in part,due to the multilayer heterogeneity of ALS(e.g.,clinical,genetic,and molecular;Tzeplaeff et al.,2024).Studies integrating multi-omic data are still limited,making it difficult to fully understand the biological complexity that characterizes the disease. 展开更多
关键词 amyotrophic lateral sclerosis als clinical trials petrov multi omic paralysis muscle weakness neurodegenerative diseaseleading amyotrophic lateral sclerosis neurodegenerative disease
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Microstructure Characteristics and Strength-Ductility Mechanisms of a Novel Neutron Shielding Al‐6Mg‐5Gd Alloy Fabricated by Laser Powder Bed Fusion 认领 引用
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作者 Chen Yang Yang Li +6 位作者 Kangbao Wang Yuchi Cui Ao Huang Zhe Chen Shengyi Zhong Haowei Wang Mingliang Wang 《Rare Metals》 SCIE EI CAS CSCD 2026年第6期680-691,共12页
Al‐based neutron shielding materials suffer from poor laser powder bed fusion(LPBF)processibility,hindering their simultaneous achievement of good printability and exceptional mechanical properties.In this work,the n... Al‐based neutron shielding materials suffer from poor laser powder bed fusion(LPBF)processibility,hindering their simultaneous achievement of good printability and exceptional mechanical properties.In this work,the newly developed rare‐earth Al alloy(i.e.,Al‐6Mg‐5Gd)was processed by LPBF technique to meet the printability,mechanical properties,and neutron shielding property all at once.Initially,a hot crack was rarely observed in as‐LPBFed alloy within the printing parameters.The main defects were gas pores and lack of fusion pores,while the related formation mechanisms were discussed.At the optimal parameters,the relative density of alloy was 99.1%.Correspondingly,the finer cell structure(τ(C36)phase)was formed in melt pool,and the coarsened cell structure was found in the melt pool boundary.Similar to the 30 wt%B4C/Al composite,the as‐LPBFed Al‐6Mg‐5Gd alloy exhibited excellent neutron shielding property(Σ=21.5 cm−1).Meanwhile,the as‐LPBFed alloy had improved mechanical properties,while the yield strength and ultimate tensile strength were 269±2 and 465±4 MPa,respectively,and the elongation was 12.9%±0.3%.The underlying strengthening and ductilizing mechanisms were discussed in combination with microstructure features,in which the cell structure claimed its critical role.Finally,the good printability was confirmed in as‐LPBFed Al‐6Mg‐5Gd alloys,and the related excellent comprehensive properties can satisfy the practical application of high‐performance neutron shielding structural components using this advanced rare‐earth Al alloy. 展开更多
关键词 cell structure laser powder bed fusion mechanical properties neutron shielding material rare‐earth Al alloy
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Laser powder bed fusion in-situ alloying for fabrication of high-performance Ti6Al4V-Fe alloys 认领 引用
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作者 Zheng LIU Yingrui ZHANG +7 位作者 Cong PENG Qi ZHANG Lihong JIANG Yuhua CHEN Zhenghua GUO Anchang JIANG Yongjian HAN Yujing LIU 《Chinese Journal of Aeronautics》 SCIE EI CAS CSCD 2026年第6期757-769,共13页
The Laser Powder Bed Fusion(L-PBF)process,characterized by high temperature gradients and rapid cooling rates,often results in the formation of coarse columnar grains in Ti6Al4V alloy,leading to anisotropy in its mech... The Laser Powder Bed Fusion(L-PBF)process,characterized by high temperature gradients and rapid cooling rates,often results in the formation of coarse columnar grains in Ti6Al4V alloy,leading to anisotropy in its mechanical properties.To optimize the solidification microstructure and mechanical performance of Ti6A14V fabricated via L-PBF,we investigated an in-situ alloying approach within the L-PBF process.A series of novel Ti6Al4V-xFe(x=1,3,5)alloys were fabricated and systematically analyzed in terms of micro structural characteristics and mechanical properties.The results demonstrate that Ti6Al4V-xFe exhibit a dual-phase micro structure,consisting ofα'andβphases,in which the volume fraction of the metastableβphase increases with the increase of Fe content.The in-situ alloying of Fe elements effectively suppresses the growth of columnar grains and promotes the Columnar-to-Equiaxed Transition(CET).Specifically,when the Fe content is 1 wt%,the alloy achieves a high strength of 1591.7 MPa,though with relatively low ductility.When the Fe content is 5 wt%,despite a reduction in strength(1204.3 MPa)compared to Ti6Al4V-1Fe,the material displays remarkable work-hardening behavior and improved ductility(with an elongation of up to 13.1%).This enhancement in mechanical properties can be primarily attributed to the increased metastableβphase,the cooperative deformation between the phases,and the progressive Transformation-Induced Plasticity(TRIP)effect triggered by theβphase. 展开更多
关键词 In-situ alloying Laser Powder Bed Fusion(L-PBF) Mechanical properties Microstructure Ti6Al4V alloy
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Synergistic aluminum lattice doping and surface coating for high-performance Co-free Ni-rich cathodes 认领 引用
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作者 Lang Wen Liang Shan +4 位作者 Yunhan Hu Yiyong Zhang Wen Lu Wen-Hua Zhang Junqiao Ding 《Journal of Semiconductors》 EI CAS CSCD 2026年第5期53-64,共12页
LiNi0.9Mn0.1O2(LNM91)is a promising cobalt-free,high-energy cathode material for next-generation lithium-ion batteries,but its commercialization is challenged by rapid capacity fading resulting from bulk and ... LiNi0.9Mn0.1O2(LNM91)is a promising cobalt-free,high-energy cathode material for next-generation lithium-ion batteries,but its commercialization is challenged by rapid capacity fading resulting from bulk and interfacial structural degradation.Herein,an in situ surface-to-bulk dual-modification strategy is developed to synthesize 6Al-LNM91(6 mol%Al modified LNM91)via a one-step calcination process based on Al diffusion chemistry.This method concurrently constructs a protective LiAlO2coating and incorporates Al3+into the bulk lattice,effectively enhancing the structural integrity of the cathode during cycling.The optimized 6Al-LNM91 cathode delivers a remarkable rate capability of 165 mA··h·g-1at 10 C and maintains 94.03%capacity retention after 120 cycles at 0.5 C(2.8-4.4 V),substantially outperforming the pristine material(76.82%of LNM91).This organic solvent-free,single-step modification approach offers a scalable and efficient route for improving high-nickel layered oxide cathodes. 展开更多
关键词 in situ dual modification Al doping LiAlO2coating cobalt-free nickel-rich cathode LiNi0.9Mn0.1O2
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Ultrahigh-Strength Soft-Magnetic NiFeCoAl Multi-Principal Element Alloys Enabled by Multiscale Heterostructure Design 认领 引用
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作者 Nairan Wang Peijian Shi +4 位作者 Wenqiang Wu Hao Wu Yong Zhao Tianlong Zhang Yan Wang 《Rare Metals》 SCIE EI CAS CSCD 2026年第4期421-432,共12页
Soft-magnetic materials(SMMs)are indispensable for electrification and sustainable energy systems,yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses.Enhancing th... Soft-magnetic materials(SMMs)are indispensable for electrification and sustainable energy systems,yet their inherent mechanical fragility fundamentally limits applications under severe mechanical stresses.Enhancing the yield strength of SMMs is essential to prevent the degradation in magnetic performance and failure from plastic deformation,but conventional SMMs(e.g.,Fe-Co alloys and metallic glasses)struggle to surpass 1GPa in strength without sacrificing ductility or soft-magnetic properties.Here,we pioneer a face-centered cubic type Ni40Fe30Co20Al10 multi-principal element alloy(MPEA)engineered with a multi-scale heterogeneous microstructure,achieving a nearly triple increase in yield strength(1103 MPa)while retaining16%elongation and excellent soft-magnetic response.This is realized through precipitation of coherent L12 nanoparticles(~20 nm in diameter,~13 nm in spacing)during thermomechanical processing,which simultaneously impedes dislocation glide and minimizes domain wall pinning.Changes in magnetic exchange interaction and nanoparticle-induced matrix magnetic moment slightly influence the saturation magnetic induction.Our strategy resolves the long-standing trade-off between mechanical robustness and soft-magnetic performance,positioning such MPEAs as promising candidates for heavy-load electromechanical systems. 展开更多
关键词 heterostructures mechanical properties multi‑principal element alloy Ni‑Fe‑Co‑Al soft‑magnetic properties
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The development and prospect of ultra-light Mg-Li alloys 认领 引用
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作者 Yan Yang Xiaoming Xiong +1 位作者 Xiaodong Peng Fusheng Pan 《Journal of Magnesium and Alloys》 SCIE EI CAS CSCD 2026年第5期1-4,共4页
In the current era of continuous innovation in materials science,ultra-light Mg-Li alloys have become a cutting-edge research focus due to their unique advantages[1].Mg-Li alloys with a density of 1.3-1.65 g/cm3,ar... In the current era of continuous innovation in materials science,ultra-light Mg-Li alloys have become a cutting-edge research focus due to their unique advantages[1].Mg-Li alloys with a density of 1.3-1.65 g/cm3,are about 1/3 of that of Al alloys.It has excellent specific strength,specific stiffness,formability,and seismic performance,making it an excellent material for structural components[2].Moreover,their exceptional resistance to high-energy particle penetration,electromagnetic shielding capability,and thermal conductivity endow them with substantial application potential in structural materials such as the shells and frames of aerospace electronic products[3,4]. 展开更多
关键词 structural components moreovertheir specific strength formability high energy particle penetration ultra light mg li alloys seismic performance specific stiffness al alloysit
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Multifunctionality of Magnetic La(Fe,Si/Al)13-Based Materials:Negative Thermal Expansion and Magnetocaloric Effect 认领 引用
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作者 Irfan Liaquat Yongqiang Qiao Qilong Gao 《Rare Metals》 SCIE EI CAS CSCD 2026年第2期207-235,共29页
In recent years,the field of magnetic materials has witnessed a paradigm shift from single-function applications to multifunctional integration,driven by the growing demand for smart materials in advanced technologies... In recent years,the field of magnetic materials has witnessed a paradigm shift from single-function applications to multifunctional integration,driven by the growing demand for smart materials in advanced technologies.Among various magnetic systems,La(Fe,Si/Al)13-series materials have emerged as particularly promising candidates due to their extraordinary spin-lattice coupling effects.These materials exhibit remarkable negative thermal expansion(NTE)behavior and giant magnetocaloric effects(MCE)when subjected to a change in temperature and magnetic field,effectively addressing device cracking caused by the coefficient of thermal expansion mismatch and enabling efficient and eco-friendly magnetic refrigeration,thereby demonstrating exceptional multifunctional properties.This comprehensive review focuses on La(Fe,Si/Al)13-based materials,systematically examining the influences of different structure-stabilizing elements,chemical substitutions at La and Fe sites,and interstitial ion insertion on their crystal structure,electronic structure,and magnetic configuration.It further elucidates the critical role of spin-lattice coupling in the controllable regulation of magnetovolume effect(MVE)and MCE.The present review not only contributes to optimizing NTE and MCE in La(Fe,Si/Al)13-based materials but also provides theoretical guidance for developing novel multifunctional materials. 展开更多
关键词 crystal and magnetic structure La(Fe,Si/Al)13 magnetocaloric effect negative thermal expansion spin-lattice coupling
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Microstructures and mechanical properties of argon tungsten arc welded TiAl joints using Ti-Nb binary filler alloy 认领 引用
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作者 Hanyu Zhao Zhiliang Zhai +2 位作者 Wei Liu Shuai Huang Tao Lv 《China Welding》 CAS 2026年第2期50-56,共7页
Argon tungsten arc welding of TiAl base alloy using Ti-30Nb(at.%)filler metals was conducted.The results indicated that sound TiAl welded joints were achieved with preheating temperature of 498℃.Microstructure and pr... Argon tungsten arc welding of TiAl base alloy using Ti-30Nb(at.%)filler metals was conducted.The results indicated that sound TiAl welded joints were achieved with preheating temperature of 498℃.Microstructure and properties of the welded TiAl joints were investigated.A transitional reaction zone,primarily consisting ofγ-TiAl andα2-Ti3Al,was observed at the interface between the weld zone and the TiAl base alloy.Due to the intense reaction between the TiAl base metal and the Ti-Nb filler metal,amounts of acicular intermetallic compounds were formed within the central region of the weld zone,consisting ofα2-Ti3Al and B2 phases.The tensile fracture of the joints exhibited brittle cleavage pattern.The average tensile strength of the welded joints at room-temperature reached 372.6 MPa,about 73.1%of the base metal(BM),with joint fracture occurred in the weld zone.Owing to the solid-solution strengthening effect of Nb,the joint tensile strength retained 326.6 MPa at 700℃,and 300 MPa at 750℃. 展开更多
关键词 TiAl alloy Ti-Nb filler alloy Gas tungsten arc welding Microstructure evolution α2-Ti3Al B2 phase
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From animal models to metabolic interventions:Lessons from the Wobbler mouse 认领 引用
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作者 Veronika Matschke 《Neural Regeneration Research》 SCIE CAS CSCD 2026年第10期4898-4899,共2页
Motor neuron diseases such as amyotrophic lateral sclerosis(ALS)remain largely incurable,with limited therapeutic options and only modest clinical benefits from currently approved drugs.Experimental models have been i... Motor neuron diseases such as amyotrophic lateral sclerosis(ALS)remain largely incurable,with limited therapeutic options and only modest clinical benefits from currently approved drugs.Experimental models have been instrumental in shaping our understanding of disease mechanisms,yet translation into effective therapies has been challenging. 展开更多
关键词 shaping our understanding disease mechanismsyet therapeutic options animal models motor neuron diseases amyotrophic lateral sclerosis ALS amyotrophic lateral sclerosis als remain wobbler mouse
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Microstructure,Mechanical Properties and Wear Resistance of(Ti2Al20La+Al3Ti)/Al-7Si Composites 认领 引用
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作者 An Jiazhi Liu Quanfeng +3 位作者 Ding Wanwu Wei Guoli Yu Haicun Yang Chengliang 《稀有金属材料与工程》 SCIE EI CAS CSCD 北大核心 2026年第7期1641-1650,共10页
(Ti2Al20La+Al3Ti)/Al-7Si composites rich in Ti2Al20La and Al3Ti reinforcement phases were prepared by the melt blending method.The influence of the addition amount of Al-Ti-La alloy on the microstruc... (Ti2Al20La+Al3Ti)/Al-7Si composites rich in Ti2Al20La and Al3Ti reinforcement phases were prepared by the melt blending method.The influence of the addition amount of Al-Ti-La alloy on the microstructure,mechanical properties,and wear resistance of the composites was analyzed.Results reveal that the(Ti2Al20La+Al3Ti)/Al-7Si composite(adding 10wt%Al-Ti-La alloy into the Al-7Si alloy)is composed of fineα-Al grains,short rod-like eutectic Si,and blocky Al3Ti and Ti2Al20La phases.The tensile strength,elongation,and hardness of the composite are 176.9 MPa,11.62%,and 73.2 HV,increased by 13.4%,57.0%,and 26.2%compared with those of the Al-7Si alloy,respectively.It is suggested that the(Ti2Al20La+Al3Ti)/Al-7Si composite exhibits relatively high plasticity.Furthermore,the wear resistance of the composites is increased by 20.1%.The performance enhancement is attributed to two key mechanisms.One is the formation of Al3Ti transition layer at the interface between the Al3Ti reinforcement phase and the aluminum matrix,which establishes a semi-coherent relationship with Al3Ti phase.The other is the adsorption of element Si by element La within the Ti2Al20La reinforcement phase,leading to Si enrichment at the edges of the Ti2Al20La phase and thereby forming a semi-coherent Si layer. 展开更多
关键词 aluminum matrix composites Al-Ti-La alloys mechanical properties wear resistance
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Microstructure and mechanical properties evolution of Al−Mg−Sc−Zr alloy fabricated by laser powder bed fusion 认领 引用 被引量：1
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作者 Xiang LI Zheng-jiang GAO Yun-zhong LIU 《Transactions of Nonferrous Metals Society of China》 SCIE EI CAS CSCD 2026年第2期337-354,共18页
The densification characterization,phase constitution,precipitation evolution and mechanical performance of Al−Mg−Sc−Zr alloy processed by laser powder bed fusion(LPBF)were systematically investigated.Moreover,the evo... The densification characterization,phase constitution,precipitation evolution and mechanical performance of Al−Mg−Sc−Zr alloy processed by laser powder bed fusion(LPBF)were systematically investigated.Moreover,the evolution of phase constitution and precipitation behavior after heat treatment were characterized by using X-ray diffraction(XRD)and transmission electron microscope(TEM)analysis.The ultimate tensile strength(UTS)of as-built samples ranged from 396.8 to 414.6 MPa as the scanning speed decreased from 1600 to 1000 mm/s.After post heat treatment,the yield strength(YS)increased to(513.1±1.3)MPa,while the UTS increased from(414.6±5.1)to(539.2±1.5)MPa.The significant improvement of mechanical performance was ascribed to the formation of secondary Al3(Sc,Zr)precipitates. 展开更多
关键词 additive manufacturing laser powder bed fusion Al−Mg−Sc−Zr precipitation behavior microstructure mechanical performance
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