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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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    In situ coupled MoO3 with CoP/rGO to construct three-dimensional self-supported catalyst for highly efficient alkaline hydrogen evolution reaction

    Zhuoran HouDi YangYuntao XinHaoyu Huang...
    194-201页
    查看更多>>摘要：In order to solve the crisis of energy depletion and protect the beautiful natural environment,the de-velopment of efficient,cost-effective and stable hydrogen evolution reaction(HER)electrocatalyst has attracted great attention,but it is still an urgent challenge to fabricate an abundant and low cost elec-trocatalyst.In this article,a novel HER catalyst with heterogeneous structure interfaces was in situ syn-thesized by multi-step electrodeposition method,and the mechanism of the enhancement of its electro-catalytic activity was elucidated by the combination of density functional theory(DFT)calculation and multi-characterizations.The initial overpotential is only 83 mV and the Tafel slope is only 58.5 mV/dec,which is better than most of other reported CoP-based electrocatalyst.At the meantime,DFT calculations show that the incorporation of MoO3 and rGO leads to electron redistribution among different compo-nents,which ensures efficient adsorption and activation of H2O molecules and hydrogen atoms.Therefore,this work will contribute to the understanding of the mechanisms associated with heterojunctions and provide guidance for the rational design of a hybrid catalyst.
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    Static recovery of A5083 aluminum alloy after a small deformation through various measuring approaches

    Sheng DingJingwei ZhangSabrina Alam KhanJun Yanagimoto...
    202-213页
    查看更多>>摘要：Static recovery was confirmed to be the dominant softening mechanism during annealing for the stud-ied A5083 aluminum alloy.The kinetics of static recovery,described based on the activation parameters(activation energy and volume of static recovery)and the static softening fraction,were mainly studied through two thermomechanical tests,namely,double-pass compression and stress relaxation tests.A new approach was proposed to measure the static softening fraction in the stress relaxation test.In general,a higher temperature or strain rate accelerates static recovery,while interestingly,the effect of pre-strain on static recovery is opposite in cases with and without external stress,owing to the enhanced static recovery by external stress during annealing.In addition,microhardness tests and electron backscatter diffraction(EBSD)characterization were also conducted to verify the accuracy of the results.The grain average misorientation approach based on EBSD characterization was confirmed to be effective in distin-guishing and quantifying static recovery.It is noteworthy that the special stress hardening phenomenon occurring at 400℃and 0.1/s is caused by strain aging,showing the complexity of the material behaviors after deformation of the studied aluminum alloy.
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    Probing the formation of ultrastable metallic glass from structural heterogeneity

    Qijing SunDavid M MiskovicMichael Ferry
    214-223页
    查看更多>>摘要：Ultrastable metallic glasses(SMGs)exhibit enhanced stability comparable to those of conventional glasses aged for thousands of years.The ability to understand why certain alloy compositions and processing conditions generate an SMG is an emerging challenge.Herein,amplitude-modulation dynamic atomic force microscopy was utilized for tracking the structure of Zr50Cu50,Zr50Cu44.5Al5.5 and Zr50Cu41.5Al5.5Mo3 thin film metallic glasses(TFMGs)that were produced by direct current magnetron sputtering at room temperature with the rate of deposition being the only variable.The transition in stability from bulk-to SMG-like behavior resides in the change of relaxation mechanism as the deposition rate is decreased.The formation of SMGs is directly linked with the degree of structural heterogeneity,whereby MGs with greater heterogeneity have a higher potential to form SMGs with more significant enhancement in sta-bility.Slower deposition rates,however,are required to yield the more homogenous structure and lower energy state underlying the ultrastability.Ultrastability is closely linked with the geometric shape and distribution of loosely packed phases,whereby SMGs containing more slender loosely packed phases with a more skewed distribution achieve more significant improvements in stability.This work not only pro-vides direct evidence of the structure of SMGs,but also opens new horizons for the design of SMGs.
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    A numerical study on the influence of grain boundary oxides on dwell fatigue crack growth of a nickel-based superalloy

    C.Z.FangH.C.BasoaltoM.J.AndersonH.Y.Li...
    224-235页
    查看更多>>摘要：A theoretical treatment on the oxide-controlled dwell fatigue crack growth of a y'strengthened nickel-based superalloys is presented.In particular,this study investigates the influence of an externally applied load and variations in the y'dispersion on the grain boundary oxide growth kinetics.A dislocation-based viscoplastic constitutive description for high temperature deformation is used to simulate the stress state evolution in the vicinity of a crack at elevated temperature.The viscoplastic model explicitly accounts for multimodal y'particle size distributions.A multicomponent mass transport formulation is used to simulate the formation/evolution of an oxide wedge ahead of the crack tip,where stress-assisted vacancy diffusion is assumed to operate.The resulting set of constitutive and mass transport equations have been implemented within a finite element scheme.Comparison of predicted compositional fields across the matrix/oxide interface are compared with experiments and shown to be in good agreement.Simulations indicate that the presence of a fine γ'size distribution has a strong influence on the predicted ow stress of the material and consequently on the relaxation in the vicinity of the crack-tip/oxide wedge.It is shown that a unimodal dispersion leads to reduced oxide growth rates(parabolic behavior)when com-pared to a bimodal one.Stability conditions for oxide formation are investigated and is associated with the prediction of compressive stresses within the oxide layer just ahead of the crack tip,which become progressively negative as the oxide wedge develops.However,mechanical equilibrium requirements in-duce tensile stresses at the tip of the oxide wedge,where failure of the oxide is predicted.The time taken to reach this critical stress for oxide failure has been calculated,from which dwell crack growth rates are computationally derived.The predicted rates are shown to be in good agreement with available experimental data.
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    Lattice distortion and magnetic property of high entropy alloys at low temperatures

    Yuan-Yuan TanZhong-Jun ChenMing-Yao SuGan Ding...
    236-243页
    查看更多>>摘要：Deformation mechanisms and magnetic properties of medium and high entropy alloys(MEA/HEAs)closely relate to lattice distortion and are strongly temperature-dependent,in particular,at low temper-ature ranges.However,little attention has been paid to the evolution of lattice distortion with tempera-ture decreasing and its effects on deformation behavior and magnetic state transition.In this work,we carry out in situ synchrotron radiation based X-ray powder diffraction(SR-XRD)experiments from 293 to 123 K aiming for determining lattice distortion evolutions of CrCoNi MEA,CrFeCoNi and CrMnFeCoNi HEAs.Magnetic measurements at corresponding low temperatures and cryogenic ranges are further con-ducted.The in situ SR-XRD results demonstrate a general reduction of lattice distortion magnitude with temperature decreasing,which shows a similar tendency with that of reported stacking fault energy(SFE)values.It is thus suggested that lattice distortion reduction possibly makes a critical contribution to defor-mation mechanism transition.The magnetic measurement results show a clear ferromagnetic transition of CrFeCoNi HEA when temperature is below 173 K.While,no obvious magnetic state transition is ob-served for CrCoNi MEA and CrMnFeCoNi HEA.The present findings on lattice distortion evolutions will pave the way for designing targeted HEAs with particular properties.
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    Metal sulfides based composites as promising efficient microwave absorption materials:A review

    Bin LiFenglong WangKejun WangJing Qiao...
    244-268页
    查看更多>>摘要：The increasingly severe electromagnetic microwave pollution raises higher requirements for the devel-opment of efficient microwave absorption(MA)materials.Metal sulfides are regarded as potential ro-bust MA materials because of their unique optical,thermal,electrical,and magnetic properties,as well as the controllable microstructures.However,due to the limited MA performances of unary metal sul-fides,morphology regulations and foreign materials hybridizations are adopted as effective strategies to improve their MA performances.Recent years witnessed the fast research progresses on the metal sul-fides based MA materials and thus,a systematic literature survey on the materials design,fabrication,characterizations,MA behaviors,and the mechanisms behind is,highly desirable to summarize the rapid progress of this hot research area so as to provide guidance for the future development trend.This review firstly reviewed the research background,research progress,and basic principles of MA materials.Subse-quently,the present synthetic methods and performance improvement strategies of metal sulfides based MA materials are systematically introduced.Then,by comparing the MA properties of one-dimensional,two-dimensional,and three-dimensional metal sulfides based composites,the influence of dimensional-ity and morphology on the MA properties are analyzed.By summarizing the research process of metal sulfides/dielectrics composites,metal sulfides/magnets composites,and metal sulfides/dielectrics/magnets composites MA materials,the influence of foreign materials hybridizations on the loss mechanisms and impedance matching conditions of metal sulfides based composites are revealed.Finally,the challenges and development prospects of metal sulfides based MA materials are presented.This review would pro-vide a comprehensive understanding and insightful guidance for the exploration and development of ef-ficient MA materials with thin thickness,light weight,wide absorption bandwidth,and strong absorption intensity.
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    Thermal cycling creep properties of a directionally solidified superalloy DZ125

    Wenrui AnSatoshi UtadaXiaotong GuoStoichko Antonov...
    269-284页
    查看更多>>摘要：Aero-engine turbine blades may suffer overheating during service,which can result in severe microstruc-tural and mechanical degradation within tens of seconds.In this study,the thermal cycling creep under(950℃/15 min+1100℃/1 min)-100 MPa was performed on a directionally solidified superalloy,DZ125.The effects of overheating and thermal cycling on the creep properties were evaluated in terms of creep behavior and microstructural evolution against isothermally crept specimens under 950℃/100 MPa,950℃/270 MPa,and 1100℃/100 MPa.The results indicated that the thermal cycling creep life was reduced dramatically compared to the isothermal creep under 950℃/100 MPa.The plastic creep deformation mainly occurred during the overheating stage during the thermal cycling creep.The thermal cycling creep curve exhibited three stages,similar to the 1100℃isothermal creep,but its minimum creep rate oc-curred at a lower creep strain.The overheating events caused severe microstructural degradation,such as substantial dissolution of y'phase,earlier formation of rafted y'microstructure,widening of the y chan-nels,and instability of the interfacial dislocation networks.This microstructural degradation was the main reason for the dramatic decrease in thermal cycling creep life,as the thermal cycling promoted more dis-locations to cut into y'phase and more cracks to initiate at grain boundaries,carbides,and residual eutectic pools.This study underlines the importance of evaluating the thermal cycling creep properties of superalloys to be used as turbine blades and provides insights into the effect of thermal cycling on directionally solidified superalloys for component design.
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    Using multiple regression analysis to predict directionally solidified TiAl mechanical property

    Seungmi KwakJaehwang KimHongsheng DingXuesong Xu...
    285-291页
    查看更多>>摘要：The mechanical properties of TiAl alloy prepared by directional solidification were predicted through a machine learning algorithm model.The composition,input power,and pulling speed were designated as input variables as representative factors influencing mechanical properties,and multiple linear regression analysis was conducted by collecting data obtained from the literature.In this study,the R2 value of the tensile strength prediction result was 0.7159,elongation was 0.8459,nanoindentation hardness was 0.7573,and interlamellar spacing was 0.9674.As the R2 value of the elongation obtained through the analysis was higher than the R2 value of the tensile strength,it was confirmed that the elongation had a closer relationship with the input variables(composition,input power,pulling speed)than the tensile strength.By adding the elongation to the tensile strength as an input variable,it was observed that the R2 value was further increased.The tensile test prediction results were divided into four groups:The group with the lowest residual value(predicted value-actual value)was designated as group A,and the group with the largest residual value was designated as group D.When comparing the values of group A and group D,more overpredictions occurred in group A,while more underpredictions occurred in group D.Using the residuals and R2 values,the cause of the well-prediction was studied,and through this,the relationship between the mechanical properties and the microstructure was quantitatively investigated.
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