金属中裂纹形核的一个理论模型  

A Theoretical Modal of Crack Nucleation in Metals

作　　者：徐颖[1] 陈经辉[1] 田华[1] 林栋梁[1] 

机构地区：[1]上海交通大学

出　　处：《材料科学与工艺》1996年第4期1-6,共6页Materials Science and Technology

摘　　要：建立了金属中裂纹形核的一个理论模型。通过理论分析，获得金属中裂纹的形核准则，定义了与材料晶粒和脆性沉淀物尺寸有关的材料影响参数，并与其他研究者的结果进行了对比分析结果表明，本文提出的模型有更明确的物理意义，形核准则较好地反映了形核应力与材料组织的对应关系。A theoretical model of nucleation of crack in metal was founded,and the nucleation criterion was obtained through theoretical analysis.Parameters which is related to the size of grains and brittle precipited particles were defined.The composition between the results and those from other researchers indicate that the nucleation criterion in this paper is more dear in physics,and also the microstructure was considered.

关 键 词：裂纹 形核 金属 

分 类 号：TG111.91[金属学及工艺—物理冶金]