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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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    Shear band evolution and mechanical behavior of cold-rolled Zr-based amorphous alloy sheets:An in-situ study

    C.Y.ZhangZ.W.ZhuS.T.LiY.Y.Wang...
    115-127页
    查看更多>>摘要：Cold rolling process can regulate the microstructure and mechanical properties of amorphous alloys,but it is still a challenging task to reveal their microscopic mechanism.Here,we designed an in-situ SEM observation device for the cold rolling process of amorphous alloy,and visually observed the formation and evolution of shear bands during single-pass and multi-pass rolling process of the Zr55Cu30Al10Ni5 amorphous alloy sheets.It is found that the evolution process of shear bands in the rolling process of amorphous alloy shows heritability,which is mainly reflected in two aspects:one is that the shear band formation pattern in the single-pass rolling process is more inclined to inherit the previous shear band formation pattern;the other is that the shear deformation is more likely to occur in the pre-existing shear bands in the multi-pass rolling process.This rule can be used to guide the controlled genera-tion of shear bands in amorphous alloys.Moreover,we emphasized the importance of pre-existing shear band orientations and systematically investigated the mechanical behavior of the amorphous alloys with pre-existing shear bands by in-situ SEM observation.It is found that the mechanical properties of the as-rolled amorphous alloys are determined by the competition between the work-softening of the pre-existing shear band itself and the work-hardening caused by the blocking effect of the pre-existing shear bands on the shear deformation.Based on this,we enhance the tensile fracture strength and the tensile ductility of the amorphous alloy by adjusting the orientation of the pre-existing shear bands parallel to the tensile stress axis so that the pre-existing shear bands prevent the linear propagation and destruction of the new shear bands.
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    Tailored heterogeneous interface based on porous hollow In-Co-C nanorods to construct adjustable multi-band microwave absorber

    Zhengying ShenDi LanYi CongYuanyuan Lian...
    128-137页
    查看更多>>摘要：By rationally controlling the growth of zeolite-imidazolium salt skeleton(ZIF-67)nanoparticles on the hollow indium oxide(In2O3)and the subsequent pyrolysis process,In-Co-C hollow rod-like composites with multiple components were successfully prepared in this work.The synergistic impact of diverse components including In2O3,C,Co3InCo.75,and In not only optimizes impedance matching and improves conductive loss,but also creates significant interfacial polarization.Furthermore,the addition of Co source and pyrolysis temperature was found to have a significant affected on impedance matching and mi-crowave absorption.The optimized In-Co-C sample displayed ultra-broad absorption bandwidth(EAB)of up to 7.12 GHz(10.88-18.0 GHz)at 2.26 mm thickness,which could cover the whole Ku band and part of X-band,outperforming the previously reported MOFs-derived composites.Furthermore,by adjusting the thickness to 2.91 mm and 4.01 mm,the EAB could cover the entire X band and most of the C band.The attenuation mechanisms were systematically investigated through the delta function method and ANSYS high-frequency structure simulator.These findings suggest that the MOFs-derived In-Co-C hollow nanorods could serve as high-performance microwave absorbers with ultra-broad absorption.
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    Achieving ultra-high corrosion-resistant Mg-Zn-Sc alloys by forming Sc-assisted protective corrosion product film

    Wenjun CiXianhua ChenXu DaiChunquan Liu...
    138-151页
    查看更多>>摘要：The weak corrosion resistance of magnesium and its alloys greatly limited the industrial application.Though functional self-healing coatings have been proposed as countermeasures,repeated damages on coatings under practical installation and complex external environments could require self-adaptive cor-rosion protection against multiple abrasions.In this study,an ultra-high corrosion-resistant Mg-1Zn-1Sc(wt.％)alloy with a corrosion rate of 0.087 mm/y has been designed and prepared,which has fine grains and uniform structure of a nano-scale ScZn phase with low potential.A unique and dense corrosion prod-uct film with a three-layered structure was found and studied on Mg-1Zn-1Sc alloy,providing excellent corrosion protection.In addition,the formation and protection mechanisms of the three-layered corrosion product film on Mg-1Zn-1Sc alloy have been discussed and proposed.The growth behavior of protective corrosion product film could be driven by the synergy of Sc and Zn elements.Furthermore,with the in-crease of Sc content,the strength,plasticity,and corrosion resistance of Mg-1Zn-xSc(x=0,0.2,0.6,1.0,in wt.％)alloys increased simultaneously.The high corrosion resistance and moderate mechanical perfor-mance qualify Mg-1Zn-1Sc alloy as a promising candidate for diverse industrial applications.
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    The rapid densification behavior of powder metallurgy Ti alloys by induction heating sintering

    Kejia PanXiaotao LiuBao WangShuai Gao...
    152-164页
    查看更多>>摘要：Micropores are decisive to mechanical properties and thermal deformation capabilities of powder met-allurgy(P/M)Ti alloys sintered compacts.As a result,achieving express densification is of prime im-portance and has attracted increasing attention recently.Induction heating owns the merits of high effi-ciency,short process,and low cost,and thus has huge potential to be used as a sintering approach for the fabrication of P/M Ti alloys.Nevertheless,the facilitated densification behavior associated with induction heating sintering remains unclear so far.To address it,powder metallurgy Ti6Al4V is manufactured via induction heating sintering with which the underlying sintering mechanism is investigated in-depth.It is found that induction heating could generate a fully densified compact in a remarkably shortened time,demonstrating its superior sintering efficiency as compared with conventional resistance furnace heat-ing.COMSOL finite element analysis reveals that the maximum current density during induction heating can reach 106 A m-2 though the magnetic field strength is solely 0.02 T,leading to a slight tempera-ture difference of approximately 30 ℃ between the interior and exterior of the billet.Furthermore,the rapid heating essentially starts at sharp corners of particles due to the potent current concentration ef-fect,which facilitates the cracking of the particle surface oxide film and thus enhances the direct contact between them.Moreover,the electromigration effect caused by induction current promotes the diffusion capability of elements,giving rise to expedited densification,alloying,and chemical homogenization.This work provides not only critical insight into the sintering mechanism of induction heating sintering but also significant guidance for low-cost powder metallurgy materials preparation.
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    Temperature dependence of pressure sensitive flow in bulk metallic glass composites

    Priyanka SainiYakai ZhaoBiao LiLong Zhang...
    165-175页
    查看更多>>摘要：The constraint factor,C,defined as hardness,H,to the yield strength,σy,ratio,is an indirect measure of the pressure sensitivity in materials.Previous investigations determined that while C is less than 3 for crystalline materials,and remains invariant with change in temperature,it is greater than 3 for bulk metallic glasses(BMGs)and increases with increasing temperature,below their glass transition temper-ature,Tg.In this study,the variations in C for two BMG composites(BMGCs),which have an amorphous matrix and in situ precipitated crystalline ß-Ti dendrites,which in one case transforms under stress toα"-Ti and deforms by slip in the other,as a function of temperature are examined and compared with that of a BMG.For this purpose,instrumented indentation tests,with a Berkovich tip,and uniaxial com-pression tests were performed to measure the H and σy,respectively,on all alloys and their constituents at temperatures in the range of 0.48Tg and 0.75Tg.σy and H of the BMGC with transforming dendrites(BMGC-T)increase and remain invariant with increasing temperature,respectively.Alternately,in BMG and the BMGC with non-transforming dendrites(BMGC-NT),the same properties decrease with increas-ing temperature.BMGC-T has the highest C of～4.93 whereas that of BMGC-NT and BMG are～3.72 and～3.28,respectively,at 0.48Tg.With increasing temperature,C of the BMG and BMGC-NT increases with temperature,but that of the BMGC-T decreases.The values of C and their variations as a function of temperature were explained by studying the variation of pressure sensitivity of the amorphous phase and concluding that the plastic flow in BMGCs under constrained conditions,such as indentation,is con-trolled by the flow resistance of the amorphous matrix whereas that in uniaxial compression,which is only partially constrained,is controlled by plasticity in both the dendrites and matrix.
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    Double heterogeneous structures induced excellent strength-ductility synergy in Ni40Co30Cr20Al5Ti5 medium-entropy alloy

    A.X.LiX.S.LiuR.LiS.B.Yu...
    176-188页
    查看更多>>摘要：The application of single-phase face-centered cubic(FCC)medium entropy alloys(MEAs)in the engi-neering industry is often hindered by the challenge of insufficient strength.In this study,a novel non-equiatomic ratio Ni40Co30Cr20Al5Ti5 MEA was successfully fabricated.Through the well-designed mechan-ical heat treatment processing,we introduced a heterogeneous grain structure comprising 67.4％fine grain and 32.6％coarse grain.Additionally,heterogeneous size L12 phases consisting of 18.7％submicron precip-itates and 11.7％nano-sized precipitates,were incorporated into the alloy.Tensile tests conducted at room temperature revealed that the double heterogeneous structure alloy demonstrated remarkable strength-ductility synergy.It exhibited a yield strength of 1200 MPa,an ultimate tensile strength of 1560 MPa and a total elongation of 33.6％.The exceptional strength of the alloy can be primarily attributed to heteroge-neous deformation induced strengthening,grain boundary strengthening and precipitation strengthening.The excellent ductility is mainly attributed to the high-density stacking faults and Lomer-Cottrell locks.This study not only contributes to the clarification of the strengthening and deformation mechanism of double heterogeneous structure alloys but also provides an effective strategy for the development of high-performance alloys with high strength and ductility.
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    Aligned nanofibers incorporated composite solid electrolyte for high-sensitivity oxygen sensing at medium temperatures

    Mengfei ZhangLei YaoYan XingJing Cheng...
    189-197页
    查看更多>>摘要：Potentiometric oxygen sensors have been widely used in internal combustion engines,industrial boilers,and metallurgical heat treatment furnaces.However,traditional oxygen sensors based on yttria-stabilized zirconia(YSZ)electrolyte can only be operated at elevated temperatures(＞750 ℃)due to their rela-tively low ionic conductivity.In this study,we present a highly efficient micro-oxygen sensor that can be operated at a temperature as low as 300 ℃.This micro-oxygen sensor incorporates a composite solid electrolyte,i.e.,well-aligned gadolinium-doped cerium oxide(CGO)nanofibers embedded within a YSZ matrix(YSZ/CGOf).The arrays of CGO nanofibers in the YSZ matrix are parallel to the conduction direc-tion,providing rapid conducting channels for oxygen ions.Benefitting from this design,the composite electrolyte leads to a conductivity of four times higher than that of traditional YSZ solid electrolytes at low temperatures.This enhancement in conductivity is attributed to the presence of a defective interfacial region between CGOf and YSZ,which promotes the mobility of oxygen ions.The strategy of constructing fast ionic conduction in the composite electrolyte by using well-aligned nanofibers may be considered for the design and optimization of other micro/nano-devices including sensors,batteries,and fuel cells.
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    Cross-linked lipoic acid nanoparticles with indole-3-methanol loading for the PTEN-mediated TNBC treatment

    Xiao XiaoRong CuiChunyan LiaoShiyong Zhang...
    198-208页
    查看更多>>摘要：We here report a non-gene therapy anti-tumor nanoparticles(I3C@cLANPs)based PTEN by loading indole-3-methanol(I3C)into the cross-linked lipoic acid nanoparticles(cLANPs)for triple-negative breast cancer(TNBC)treatment.I3C is a PTEN-specific natural activator while the poor PTEN-activation effi-ciency impedes its ability to achieve the PTEN-mediated tumor therapy.Due to the structural homology of lipoic acid(LA),the cLANPs hold not only LA-like anticancer activity but also PTEN-activation proper-ties,which would synergistically potentiate the PTEN-activation efficiency.The in vitro and in vivo data showed that PTEN expression in the I3C@cLANPs group was 2.1 and 2.8 times higher than that of I3C,respectively.In antitumor evaluation based on the 4T1 tumor-bearing mice showed a tumor inhibitory rate(TIR)of 78.4％at the I3C usage of 20 mg kg-1,54.5％higher than that of I3C alone and 19.7％higher than that of first-line chemotherapy drug Doxorubicin hydrochloride(DOX).Thus,the I3C@cLANPs could address the low activation efficiency in the PTEN-mediated tumor strategy and avoid the risks of gene therapy,holding a good prospect for TNBC and related cancer treatment.
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    Superior strength-ductility combination resulted from hetero-zone boundary affected region in Cu-Fe layered material

    Hao RanPeihao YeFengjiao GuoMingsai Wang...
    209-219页
    查看更多>>摘要：The hetero-zone boundary affected region(HBAR)significantly influences the mechanical behaviors of layered materials,where the deformation mechanisms differ from those in the bulk layers.In this study,three kinds of heterogeneous Cu-Fe layered materials with different interface spacing but identical total thicknesses were prepared.The effects of HBAR and strain partitioning on the tensile behavior of the lay-ered materials were investigated.The results showed that layered materials had enhanced yield strength and uniform elongation with decreasing interface spacing.During tensile deformation,geometrically nec-essary dislocations(GNDs)were generated at hetero-zone boundaries and piled up near them,resulting in hetero-deformation induced(HDI)strengthening and HDI work hardening.Surface profilometry mea-surements showed that the Cu and Fe layers exhibited obvious strain partitioning and mutual constraint.With decreasing interface spacing,strain partitioning is enhanced by interlayer constraint,which pre-vented strain localization at interfaces and thus improved the synergetic deformation of layers.A higher fraction of HBAR can improve the mechanical performance of heterogeneous layered materials.This study deepens our understanding of the relationship between HBAR and strength-ductility synergy and provides some insight into the design of layered materials.
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    Bulk ultrafine grained microstructures with high thermal stability via intragranular precipitation of coherent particles

    Shenglong LiangXiaochun LiuSuihe JiangHuihui Zhu...
    220-230页
    查看更多>>摘要：Producing ultrafine-grained(UFG)microstructures with enhanced thermal stability is an important yet challenging route to further improve mechanical properties of structural materials.Here,a high-performance bulk UFG copper that can stabilize even at temperatures up to 750 ℃(～0.75Tm,Tm is the melting point)was fabricated by manipulating its recrystallization behavior via low alloying of Co.Addition of 1 wt.％-1.5 wt.％of Co can trigger quick and copious intragranular clustering of Co atoms,which offers high Zener pinning pressure and pins the grain boundaries(GBs)of freshly recrystallized ul-trafine grains.Due to the fact that the subsequent growth of the coherent Co-enriched nanoclusters was slow,sufficient particles adjacent to GBs remained to inhibit the migration of GBs,giving rise to the UFG microstructure with prominently high thermal stability.This work manifests that the strategy for pro-ducing UFGs with coherent precipitates can be applied in many alloy systems such as Fe-and Cu-based,which paves the pathway for designing advanced strain-hardenable UFGs with plain compositions.
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