典型文献
Excellent strength-ductility synergy properties of gradient nano-grained structural CrCoNi medium-entropy alloy
文献摘要：
Tailoring heterogeneities could bring out excellent strength-ductility synergy properties.A gradient nano-grained(GNG)structure,i.e.grain size range from nanometer(～50 nm)at topest surface layer to microm-eter(～1.3 μm)at center layer,was successfully introduced into CrCoNi medium-entropy alloy(MEA)by means of high energy shot peening in this work.Experimental results demonstrated that this GNG Cr-CoNi MEA shows excellent strength and ductility combination properties,exhibiting high yield strength and ultimate tensile strength of～1215 MPa and～1524 MPa,respectively,while remaining a good duc-tility of～23.0％.The extraordinary hetero-deformation induced(HDI)hardening origins from heteroge-neous structure,i.e.GNG structure,which contributes to the majority strength enhancement.Dynamical reinforced heterogeneous structure during tension process results in the enhanced HDI hardening effect,which facilitates excellent ductility and strain hardening capacity at high-level strength.Our work provide not only a feasible and effective way to strengthen the CrCoNi MEA,and other low stacking faults energy(SFE)materials,but also an useful insight to understanding HDI hardening in heterogeneous structure.
文献关键词：
中图分类号：
作者姓名：
Wenjie Lu;Xian Luo;Dou Ning;Miao Wang;Chao Yang;Miaoquan Li;Yanqing Yang;Pengtao Li;Bin Huang
作者机构：
State Key Laboratory of Solidification Processing,Northwestern Polytechnical University,Xi'an 710072,China;Langu Institute for Materials Analysis Co.Ltd,Weihai 264207,China;School of Physics and Optoelectronic Engineering,Yangtze University,Jingzhou 434023,China
文献出处：
引用格式：
[1]Wenjie Lu;Xian Luo;Dou Ning;Miao Wang;Chao Yang;Miaoquan Li;Yanqing Yang;Pengtao Li;Bin Huang-.Excellent strength-ductility synergy properties of gradient nano-grained structural CrCoNi medium-entropy alloy)[J].材料科学技术（英文版）,2022(17):195-201
A类：
topest,microm,duc
B类：
Excellent,ductility,synergy,properties,gradient,grained,structural,CrCoNi,medium,entropy,alloy,Tailoring,heterogeneities,could,bring,out,excellent,GNG,structure,size,range,from,nanometer,surface,layer,center,was,successfully,introduced,into,MEA,by,means,high,energy,shot,peening,this,work,Experimental,results,demonstrated,that,shows,combination,exhibiting,yield,ultimate,tensile,respectively,while,remaining,good,extraordinary,deformation,induced,HDI,hardening,origins,which,contributes,majority,enhancement,Dynamical,reinforced,heterogeneous,during,tension,process,enhanced,facilitates,strain,capacity,level,Our,provide,not,only,feasible,effective,way,strengthen,other,low,stacking,faults,SFE,materials,also,useful,insight,understanding
AB值：
0.528323
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