Effect of damage on fatigue crack growth rate under high-temperature creep-fatigue multiplication

Toshimitsu Yokobori, Yoshiyuki Kaji, Takashi Kuriyama, Takeo Yokobori

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

The characterization for the crack growth rate and the progressive damage region around the crack tip of SUS 304 stainless steel were investigated with various holding times at the maximum stress in a trapozoidal wave in a vacuum at 680°C. From these experimental results, the crack growth rate approaches the creep crack growth rate, and the geometry of the progressive damage region around the crack tip becomes similar with the increase of stress holding time. The fracture surface shows integranular features dominated by creep in the case of with stress holding time, but does not show without stress holding time. This is distinguished from a triangular wave with no stress holding time, where the fracture implicitly involves fatigue and creep effects.

Original languageEnglish
Pages (from-to)2349-2354
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume57
Issue number542
Publication statusPublished - 1991 Oct
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering

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