Exceptionally high strain hardening via two-dimensional atomic scale faulting  

作　　者：Andrew Godfrey Xiaoxu Huang 

机构地区：[1]Laboratory of Advanced Materials,School of Materials Science and Engineering,Tsinghua University,Beijing 100084,China [2]International Joint Laboratory for Light Alloys,College of Materials Science and Engineering,Chongqing University,Chongqing 400044,China

出　　处：《Science China Materials》2023年第12期4897-4898,共2页中国科学（材料科学）（英文版）

摘　　要：Strain hardening is a characteristic and important property of metals whereby they are strengthened by the introduction of lattice defects during plastic deformation.In general,a high strain hardening ability is desired,both to ensure the safety of metal components under load and to enable high ductility,allowing the formation of complex shapes.The underlying mechanisms of strain hardening have been extensively studied and are related to an increase in the density of linear lattice defects,i.e.,dislocations,and to the interaction between these defects during the evolution of three-dimensional dislocation structures[1±3].Coarse-grained(CG)metals generally show the highest strain hardening and the best tensile ductility due to the more abundant space for storage of dislocations in various forms of patterning.

关 键 词：STRAIN DUCTILITY DIMENSIONAL 

分 类 号：TG113.253[金属学及工艺—物理冶金]