Fatigue fracture process of a high-carbon-chromium bearing steel in ultra-long life regime

被引：0
|
作者：
Lu, LT [1 ]
Shiozawa, K
Morii, Y
Nishino, S
机构：
[1] SW Jiaotong Univ, State Key Lab Tract Power, Chengdu 610031, Peoples R China
[2] Toyama Univ, Dept Mech & Intellectual Syst Engn, Toyama 9308555, Japan
来源：
ACTA METALLURGICA SINICA | 2005年 / 41卷 / 10期
关键词：
bearing steel; ultra-long life fatigue; subsurface fatigue crack; crack initiation and propagation; topographic analysis;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Fatigue fracture process of high-carbon-chromium. bearing steel was studied in ultra-long life regime. The results show that fatigue crack began to initiate at an interior inclusion at about 5%-10% of fatigue lifetime, and then many micro-cracks formed dispersively due to the decohesion of spherical carbide around the inclusion from the matrix, which will grow and coalesce each other with fatigue processing. When fatigue lifetime is over 90%, fatigue crack formed from those micro-cracks starts continuous propagation.
引用
收藏
页码：1066 / 1072
页数：7
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