摘要
通过对裂纹损伤区位错平衡条件的分析，建立了循环应力下的疲劳短裂纹生长位错模型．结合对疲劳短裂纹损伤区与晶界交互作用分析，由模型给出了一个振荡形式发展的微观结构疲劳短裂纹生长速率表达式，其范围包络线可以较好地覆盖裂纹生长速率的试验数据．
The dislocation m odel ofshort fatigue cracks under cyclic stressis built based on the anal ysis of equilibriu m condition for crack dam age zone . The equation of growth rate of short fatiguecracks is presented from the modelrelated to the analysis of interactions between the dam age zoneand grain boundary ,the surround lines of the rate of cracks growth covered the spread of experi mental results efficaciously .
出处
《广东工业大学学报》
CAS
1999年第3期9-13,共5页
Journal of Guangdong University of Technology
关键词
微观结构
疲劳短裂纹
位错模型
生长速率
裂纹
microstructurally
short fatigue crack
dislocation model
growth rate
