摘要
本文利用扫描电镜仔细观察了３００Ｍ钢孔挤压强化后疲劳断口的形貌；研究了疲劳裂纹的起始与扩展特征；探讨了孔挤压强化明显推迟疲劳裂纹起始、降低疲劳裂纹扩展速率的机理。
atigue fracture of 300M steel after holes coining strenthening has been observed in detail by all means of SEM; The characteristic of fatigue crack initiation and propagation has been studied. The mecha-nism of defered initiation of crack and reduction of crack propagation rate owing to holes coining has been discussed also.
出处
《材料工程》
EI
CAS
CSCD
北大核心
1994年第1期31-34,共4页
Journal of Materials Engineering
关键词
钢
孔挤压强化
疲劳断口
扫描电镜
Crack propagation
Fatigue of materials
Fracture testing
Mechanical properties
Strength of materials
Strengthening (metal)
