Fatigue characteristics of bearing steel in very high cycle fatigue

被引:10
|
作者
Chana-Min, Suh [2 ]
Jong-Hyoung, Kim [1 ]
机构
[1] Nagoya Univ, Grad Sch Engn, Dept Engn Sci & Mech, Chikusa Ku, Aichi 4648603, Japan
[2] Kyungpook Natl Univ, Sch Mech Engn, Taegu 702701, South Korea
关键词
Very high cycle fatigue (VHCF); Rotational bending fatigue test; Shot peening; Fatigue characteristic; Fish-eye crack; Giga cycle fatigue; SUBSURFACE CRACK INITIATION; GIGACYCLE FATIGUE; MECHANISM; FAILURE;
D O I
10.1007/s12206-008-1104-3
中图分类号
TH [机械、仪表工业];
学科分类号
0802 ;
摘要
Very high cycle fatigue (VHCF) tests were carried Out to find the fatigue characteristics of a super-long life range by using a cantilever type rotational bending fatigue test machine on three kinds of specimens in bearing steel which were quenched and tempered in air (A: non-shot peened and B: shot peened after heat treatment) and under vacuum environment(C: non-shot peened) in this Study. S-N curves obtained from the VHCF tests of the B and C specimens tend to come down again in the super-long life (10(9) cycles) range due to fish-eye type cracking, while most of the A and B specimens were fractured by surface detects Such Lis scratches and slip lines. This duplex S-N behavior of bearing steel has to be reviewed by the change of the fracture modes.
引用
收藏
页码:420 / 425
页数:6
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