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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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    Coarsening kinetics and strengthening mechanisms of core-shell nanoscale precipitates in Al-Li-Yb-Er-Sc-Zr alloy

    Yang WangShun ZhangRuizhi WuNodir Turakhodjaev...
    197-203页
    查看更多>>摘要：The tailored nanoparticles with a complex core/shell structure can satisfy a variety of demands,such as lattice misfit,shearability and coarsening resistance.In this research,core-shell nanoscale Al3(Yb,Er,Sc,Zr,Li)composite particles were precipitated in Al-2Li-0.1Yb-0.1Er-0.1Sc-0.1 Zr(wt％)alloy through the double-aging treatment,in which the core was(Yb,Er,Sc,Zr)-rich formed at 300℃ and the shell was Li-rich formed at 150℃.The coarsening kinetics and precipitate size distributions(PSDs) of Al3(Yb,Er,Sc,Zr,Li)particles aged at 150℃ previously aged at 300℃ for 24 h showed a better fit to the relation of <r>2α kt and normal distribution,indicating that the coarsening of precipitates was controlled by interface reaction not diffusion.The Orowan bypass strengthening was operative mechanism at 150℃.
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    Critical transitions in the shape morphing of kirigami metallic glass

    D.X.HanL.ZhaoS.H.ChenG.Wang...
    204-212页
    查看更多>>摘要：Kirigami,the ancient Japanese paper cutting technique,has been applied to achieve high stretchability and low energy loss of designed metallic glass.Despite the exploration of the underlying deformation mechanism of kirigami-inspired structures from the energy point of view,the morphable responses of the kirigami patterns and the origin of the kirigami response are yet to be fully understood.This study reveals the mechanical driven-forms of the kirigami structure with the corresponding deformation stages.Based on the beam deflection theory,the elastic buckling behavior of kirigami metallic glass is manifested and a critical force prediction model is developed.Moreover,a force concentration parameter is introduced in the rigid-plastic deformation stage,predicting the nominal ultimate force.The kirigami-inspired facture force is firstly proposed.The findings of these models are in good agreement with the experimental size-dependent kirigami responses,and expected to provide significant insights into the understanding of the deformation behavior and the design of kirigami metallic glasses.
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    Preparation of hysteresis-free flexible perovskite solar cells via interfacial modification

    Jianjun ZhangXiaofang YeHongkun CaiJian Su...
    213-220页
    查看更多>>摘要：In recent years,flexible perovskite solar cells have received extensive attention and rapid development due to their advantages of lightweight,portability,wearability and applications in near-space.However,due to the limitations of their preparation process and other factors,high-efficiency and large-area flexi-ble perovskite solar cells still have a lot of room for development.In our work,a flexible perovskite solar cell(PEN/ITO/SnO2/KCl/Cs0.05(MA0.17FA0.83)0.95Pb(I0.83Br0.17)3/spiro/Au)was prepared using a low tem-perature(no higher than 100℃)solution process,and the device with the highest efficiency of 16.16％ was obtained by adjusting the concentration of the KCl modified layer.Meanwhile,the efficiency of the large area(1 cm2)flexible solar cell was higher than 13％.At the same time,the passivation of the KCl interface modification layer inhibits the formation of the defect states,which reduced the surface recom-bination of the perovskite and improved the carrier transport performance,and the hysteresis effect of the device was also reduced accordingly.
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    Microstructural homogeneity and mechanical behavior of a selective laser melted Ti-35Nb alloy produced from an elemental powder mixture

    Jincheng WangYujing LiuChirag Dhirajlal RabadiaShun-Xing Liang...
    221-233页
    查看更多>>摘要：Although using elemental powder mixtures may provide broad alloy selection at low cost for selective laser melting(SLM),there is still a concern on the resultant microstructural and chemical homogeneity of the produced parts.Hence,this work investigates the microstructure and mechanical properties of a SLM-produced Ti-35Nb composite(in wt％)using elemental powder.The microstructural characteris-tics including β phase,undissolved Nb particles and chemical homogeneity were detailed investigated.Nanoindentation revealed the presence of relatively soft undissolved Nb particles and weak interface bonding around Nb-rich regions in as-SLMed samples.Solid-solution treatment can not only improve chemical homogeneity but also enhance bonding through grain boundary strengthening,resulting in～43％ increase in tensile elongation for the heat-treated Ti-35Nb compared to the as-SLMed counter-part.The analyses of tensile fractures and shear bands further confirmed the correlation between the different phases and the ductility of Ti-35Nb.In particular,the weak bonding between undissolved Nb and the matrix in the as-SLMed sample reduces its ductility while the β grains in solid-solution treated Ti-Nb alloy can induce a relatively stable plastic flow therefore better ductility.This work sheds insight into the understanding of homogenization of microstructure and phases of SLM-produced alloys from an elemental powder mixture.
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    Influence of cementite spheroidization on relieving the micro-galvanic effect of ferrite-pearlite steel in acidic chloride environment

    Hu LiuJie WeiJunhua DongYiqing Chen...
    234-246页
    查看更多>>摘要：The corrosion behavior of the as-received steel and the spheroidized steel in acidic chloride environ-ment was investigated.The results indicate the corrosion mode and corrosion rate of two steels are diverse due to their difference in microstructure.For as-received steel with ferrite-pearlite microstruc-ture,severe localized corrosion happens on the pearlite regions,and plenty of cathodic cementite remains in the pits,further strengthening the micro-galvanic effect and accelerating the corrosion rate.While for spheroidized steel with tempered martensite microstructure,the nanosized cementite particles evenly distributed on the ferrite substrate are easy to fall off,which can significantly reduce the cementite accumulation on the steel surface,relieving the acceleration effect of micro-galvanic corrosion.
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