Paper Title:
Effects of Hydrogen Environment on Fatigue Characteristics of 18Cr-8Ni Stainless Steel
  Abstract

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.

  Info
Periodical
Edited by
Jaroslav Pokluda
Pages
283-286
DOI
10.4028/www.scientific.net/MSF.482.283
Citation
K. Kawamoto, Y. Aoki, Y. Oda, T. Yoshimura, H. Noguchi, K. Higashida, "Effects of Hydrogen Environment on Fatigue Characteristics of 18Cr-8Ni Stainless Steel", Materials Science Forum, Vol. 482, pp. 283-286, 2005
Online since
April 2005
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