Anisotropic high cycle fatigue behaviour of duplex stainless steels:: influence of microstresses

被引：1
作者：
Moverare, JJ [1 ]
Odén, M [1 ]
机构：
[1] Linkoping Univ, Dept Mech Engn, S-58183 Linkoping, Sweden
来源：
ZEITSCHRIFT FUR METALLKUNDE | 2002年 / 93卷 / 01期
关键词：
fatigue; X-ray diffraction; stress-strain relationship; duplex stainless steels; microstresses;
D O I：
10.3139/146.020007
中图分类号：
TF [冶金工业];
学科分类号：
0806 ;
摘要：
The anisotropic high cycle fatigue behaviour has been investigated for a duplex stainless steel in as-received and prestrained condition. It was found that the anisotropy of the fatigue limit is different from the anisotropy of yield strength. The main reason for this is the influence of microstresses on fatigue crack initiation. Fatigue cracks are seen to nucleate preferably in the austenite phase, which has tensile microstresses. Prestraining alters the microstresses from being higher in the transverse direction to being higher in the rolling direction. At the same time, the fatigue limit is changed from being higher in the rolling direction to being higher in the transverse direction.
引用
收藏
页码：7 / 11
页数：5
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