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材料科学技术(英文版)
材料科学技术(英文版)

胡壮麟

月刊

1005-0302

jmst@imr.ac.cn

024-83978208

110016

沈阳市沈河区文化路72号

材料科学技术(英文版)/Journal Journal of Materials Science & TechnologyCSCDCSTPCD北大核心EISCI
查看更多>>本刊简称《JMST》,(ISSN 1005-0302,CN 21-1315/TG)。1985年创刊。是中国科协主管,中国金属学会,中国材料研究学会和中国科学院金属研究所联合主办的国际性英文期刊,以“加强国际交流,扩大学术影响,服务经济建设”为办刊宗旨,刊登世界各国的具有创新性和较高学术水平的原始性论文,并设有物约综述、快报、简讯及国内外材料界杰出学者简介等栏目,内容包括金属材料、无机非金属材料、复合材料及有机高分子材料等。
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    A thermodynamic extremal principle incorporating the constraints from both fluxes and forces.Ⅱ.Application to isothermal diffusion in multi-principal element alloys

    Xin LiDexu CuiJianbao ZhangZhiyuan Huang...
    215-226页
    查看更多>>摘要:The thermodynamic extremal principle incorporating the constraints from both fluxes and forces pro-posed in part Ⅰ was applied to isothermal diffusion in multi-principal element alloys(MPEAs)to propose the so-called double-constraint model.The model cannot reduce physically to the previous model con-sidering only the constraint from fluxes(i.e.,the single-constraint model)but in special cases reduces to Fick's law and Darken's equation,showing its reliability.Similar to the previous pair-wise model and single-constraint model,the solutes and solvent do not need to be defined in advance in the double-constraint model and the model can be also applied directly to diffusion in MPEAs.Applications to isothermal diffusion in CoCrFeMnNi pseudo-binary diffusion couple and CoCrFeNi,CoCrFeMnNi body-diagonal diffusion couples showed that the present double-constraint model overall predicted better the experimental results than the previous single-constraint model,indicating again the necessity to consider the constraints from both fluxes and forces in the phenomenological theory of Onsager.

    Colorable photothermal-induced self-repairing anti-corrosion coating based on confined solid-liquid transition

    Jiahong WeiTing ShenWenkai CaoLong Jiang...
    227-237页
    查看更多>>摘要:Self-repairing coatings hold promise for prolonging the lifespan of steel structures and reducing carbon dioxide emissions from metal corrosion.Reversible chemistry-based intrinsic self-repairing has emerged as a cutting-edge strategy for addressing material damage.However,achieving effective repair at damaged coating interfaces remains challenging due to adhesion limitations between the coating and substrate.In this study,we propose an innovative approach to efficiently repair coating damage using photothermal-induced confined solid-liquid transition.We developed a unique structured coating by incorporating ther-moplastic epoxy resin(EP)into a polyethersulfone(PES)network skeleton through controlled reaction-induced phase separation.Additionally,we synthesized visible-light transmittable copper sulfide(CuS)nanocrystals as photothermal fillers to impart PES/EP-CuS coating with colorability.Upon near-infrared(NIR)laser irradiation,the EP phase undergoes confined solid-liquid transition at the crack site,enabling it to flow through the PES skeleton and seal the crack.This process promotes contact between damaged interfaces and closes the crack through interfacial tension.The PES/EP-CuS coating exhibited exceptional anti-corrosion restoration during service,showcasing its robust self-repairing capability.

    The synergetic effect of He and Kr irradiation on helium bubble evolution in SiC/SiC composite:Combining in-situ TEM observation with MD simulation

    Shanshan XuCe ZhengXiaoqiang LiNing Gao...
    238-246页
    查看更多>>摘要:SiC fiber reinforced SiC matrix composites(SiC/SiC composites)are considered as one of the promising structural materials for liquid type breeding blanket in the fusion energy system.The transmutation gas production rate in fusion reactor is significantly higher compared with fission reactors.An innovative method combining in-situ irradiation and TEM observation and MD simulation was utilized to evaluate the synergetic effects of helium and irradiation on SiC/SiC composites.A comprehensive experiment ma-trix including Kr irradiation,He pre-implantation with sequential Kr irradiation as well as simultaneous dual beam at 1073 K to 16 dpa and 2400 appm He(150 appm/dpa)was performed using 800 keV Kr and 50 keV He ions.With the support of MD results,the impact of relative concentration ratio of vacan-cies and helium atoms on the bubble evolution was systematically investigated and the corresponding mechanism was further unraveled,which provides the basis of limiting the bubble density in SiC/SiC composites.Additionally,the direct evidence for the competition of irradiation-assisted bubble growth and re-dissolution was in-situ observed in SiC matrix for the first time.

    An additively manufactured precipitation hardening medium entropy alloy with excellent strength-ductility synergy over a wide temperature range

    Jing HuangWanpeng LiTao YangTzu-Hsiu Chou...
    247-264页
    查看更多>>摘要:Modern engineering has long been in demand for high-performance additive manufactured materials for harsh working conditions.The idea of high entropy alloy(HEA),medium entropy alloy(MEA),and multi-principal-element alloy(MPEA)provides a new way for alloy design.In this work,we develop a Co42Cr20Ni30Ti4Al4 quinary MEA which exhibits a superiority of mechanical properties over a wide tem-perature ranging from 77 to 873 K via selective laser melting(SLM)and post-heat treatment.The present MEA achieves an excellent ultimate tensile strength(UTS)of 1586 MPa with a total elongation(TE)of 22.7%at 298 K,a UTS of 1944 MPa with a TE of 22.6%at 77 K,and a UTS of 1147 MPa with a TE of 9.1%at 873 K.The excellent mechanical properties stem from the microstructures composed of partially refined grains and heterogeneously precipitated L12 phase due to the concurrence of recrystallization and precipitation.The grain boundary hardening,precipitation hardening,and dislocation hardening con-tribute to the high YS at 298 and 77 K.Interactions of nano-spaced stacking faults(SFs)including SFs networks,Lomer-Cottrell locks(L-C locks),and anti-phase boundaries(APBs)induced by the shearing of L1 2 phase are responsible for the high strain hardening rate and plasticity at 77 K.Our work provides a new insight for the incorporation of precipitation hardening and additive manufacturing technology,paving the avenue for the development of high-performance structural materials.

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