Low-Cycle Fatigue of SUS 304 Stainless Steel under TwoStep Loading (Effect of Prefatigue Damage on Microcrack Growth Rate)

Yoshihiro Fukushima, Shoji Harada, Yoshiaki Akiniwa, Hiroshi Sawada

Research output: Contribution to journalArticle

Abstract

Two-step loading LCF tests were conducted on a cyclic hardening SUS 304 stainless steel to examine the effect of prefatigue damage on the subsequent crack growth rate after switching the strain level. The effect of prefatigue damage yielded overshooting and undershooting of stress amplitude in comparison with single strain cycling and subsequently caused acceleration and retardation of the microcrack growth rate. Those trends were reversed depending on the combination of the level of the first and the second strain amplitude. Martensitic transformation measured by the X-ray diffraction method revealed that increasing strain amplitude promotes the transformation and results in acceleration of microcrack growth.

Original languageEnglish
Pages (from-to)2194-2199
Number of pages6
JournalTransactions of the Japan Society of Mechanical Engineers Series A
Volume60
Issue number578
DOIs
Publication statusPublished - Jan 1 1994
Externally publishedYes

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All Science Journal Classification (ASJC) codes

  • Materials Science(all)
  • Mechanics of Materials
  • Mechanical Engineering

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