Investigation of crack initiation and propagation behavior of AISI 310 stainless steel up to very high cycle fatigue

被引：14
|
作者：
Khan, M. K. [1 ]
Wang, Q. Y. [1 ]
机构：
[1] Sichuan Univ, Dept Mech & Engn Sci, Chengdu 610065, Peoples R China
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2013年 / 54卷
基金：
中国国家自然科学基金;
关键词：
Very high cycle fatigue; Surface roughness; PSBs; Local plasticity; Crack initiation; GIGACYCLE FATIGUE; SURFACE-RELIEF; BEARING STEEL; MECHANISM; IRON; AFM;
D O I：
10.1016/j.ijfatigue.2013.04.009
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Fatigue behavior up to very high cycles for AISI 310 stainless steel has been investigated. The fatigue crack initiated from the surface of the material. It was found that up to 10(6) cycles, cracks initiated from the carbide precipitates at grain boundaries. However, above 10(6) cycles, the cracks initiated from persistent slip bands found at the surface of the specimen. At lower stress levels, slip bands were developed without initiating the cracks. The horizontal asymptote S-N curve from 10(6) to 10(9) cycles was attributed to the development of slip bands all over the surface of the specimen, before crack initiation. (C) 2013 Elsevier Ltd. All rights reserved.
引用
收藏
页码：38 / 46
页数：9
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