Near-threshold fatigue crack propagation in stainless steel under combined torsion and tension

被引：0
|
作者：
Yu, HC [1 ]
Sun, YG
Zhang, YJ
Xie, SS
Tanaka, K
机构：
[1] Beijing Inst Aeronaut Mat, Beijing 100095, Peoples R China
[2] Shenyang Heavy Machinery Grp Co Ltd, Shenyang 110025, Peoples R China
[3] Benxi Iron & Steel Co Ltd, Benxi 117100, Peoples R China
[4] Baosteel Co Ltd, R&D Ctr, Shanghai 201900, Peoples R China
[5] Nagoya Univ, Sch Engn, Nagoya, Aichi 4648603, Japan
来源：
ACTA METALLURGICA SINICA | 2006年 / 42卷 / 02期
关键词：
combined torsion and tension; fatigue crack propagation; sliding contact; stress intensity factor (SIF); threshold;
D O I：
暂无
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
Near-threshold fatigue crack propagation tests were conducted under combined torsion and tension on a circumferentially pre-cracked round bar of an austenite stainless steel. The propagation behavior was studied extensively under various combinations of cyclic loads. The threshold condition of fatigue crack extension was expressed by a quarter-elliptic function in terms of the stress intensity factor ranges for mode I and III. The equation can be derived on the basis of the crack-tip displacement criterion. The threshold condition for fracture is also expressed by another quarter-elliptic function.
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页码：186 / 190
页数：5
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