Effects of hydrogen environment on fatigue characteristics of 18Cr-8Ni stainless steel

被引：0
|
作者：
Kawamoto, K
Aoki, Y
Oda, Y
Yoshimura, T
Noguchi, H
Higashida, K
机构：
来源：
MATERIALS STRUCTURE & MICROMECHANICS OF FRACTURE IV | 2005年 / 482卷
关键词：
fatigue; hydrogen embrittlement; austenitic stainless steel; crack initiation; crack propagation; slip band; striation;
D O I：
10.4028/www.scientific.net/MSF.482.283
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
In order to clarify the effects of hydrogen on the fatigue characteristics of an austenitic stainless steel, bending fatigue tests were conducted in air, in a hydrogen gas and in a nitrogen gas. Main results obtained are as follows. Effects of hydrogen gas environment are not clearly seen on the strain range fatigue life diagram, because there are opposite effects to crack propagation and to crack initiation; accelerates crack propagation, but retards crack initiation. Striation spacing or in-situ observation confirms the acceleration. The retardation seems to be attributed to the absence of oxygen or water vapor in the hydrogen gas.
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页码：283 / 286
页数：4
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