Creep damage and creep crack growth behavior in Cr-Mo-V steel

Toshimitsu Yokobori, Tetsuo Nishihara, Toshiaki Yamaoku, Takeo Yokobori

Research output: Contribution to journalArticlepeer-review

Abstract

In this paper the substantial meaning of C* parameter was clarified. And it was found that C* parameter does not relate to the local stress field but creep elongation rate. Also creep damage was found to be a concentrated region of micro cracking along the grain boundary and to be represented by one characteristic curve independent on gross stress, temperature, shapes of notch against the nondimensional time controlled by creep rupture life. Creep crack growth rate was influenced by creep damage and it was due to the accumulated creep damage before creep crack initiation, which was mainly influenced by the effect of notch shape.

Original languageEnglish
Pages (from-to)1522-1527
Number of pages6
JournalNippon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
Volume57
Issue number539
Publication statusPublished - 1991 Jul
Externally publishedYes

ASJC Scopus subject areas

  • Mechanical Engineering

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