CRACK INITIATION AND GROWTH BEHAVIOR FOR HIGH TEMPERATURE CREEP-FATIGUE INTERACTION IN A NOTCHED SPECIMEN OF Ni-BASED ALLOY.

Kenji Kikuchi, Toshimitsu Yokobori, Masatoshi Futakawa, Yasushi Muto

Research output: Contribution to journalArticlepeer-review

Abstract

The crack initiation and growth behavior of Ni-based heat-resisting alloy was investigated in a vacuum environment at 1073 K using double edge notch test specimens, with varying holding times T//h at maximum stress during the cycle. The results showed that the crack growth rate could be evaluated by the C*-integral because of the good correspondence of the crack growth rate and the notch opening displacement rate; however, the crack growth rate did not correspond to the deformation of the test specimen in the other range of T//h. Relative notch opening displacement at the crack initiation, RNOD//C, indicated almost constant value and agreed with the results of SUS 304 stainless steel, except for the fatigue region.

Original languageEnglish
Pages (from-to)1228-1231
Number of pages4
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume52
Issue number477
Publication statusPublished - 1986 May
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering

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