Investigation of the dominating mechanism of fatigue life for various alloys with CSSC on R = O and -1

Ayumi Komori, Eriko Watanabe, Momoko Toda, Rumi Kitazawa, Makoto Yoshida, Susumu Horibe

    Research output: Contribution to journalArticle

    Abstract

    Most studies on CSSC (cyclic stress-strain curve) have been conducted in the condition of the stress ratio R= -1. There are few reports on the effect of mean stress on CSSC. In this study, the stress-controlled fatigue tests under A=0 and -1 were performed on JIS S25C (AISI 1020), IF steel, A2024-T6, A6061-T6 and Ti-6A1-4V alloys. CSSCs of R=0 and -1 were compared. Creep strain (ratcheting strain) was also measured to investigate dominating mechanism of fatigue life of these alloys. It was found that the effect of mean stress on CSSC was different with each alloy. The dominating mechanism of JIS S25C and IF steel was creep strain. However, the dominating mechanism of A2024-T6 and A6061-T6 was plastic strain amplitude. The dominating mechanism of Ti-6A1-4V alloy was both creep strain and plastic strain amplitude. Thus, fatigue life reduction caused by mean stress in Ti-6A1-4V alloy was remarkably occurred than the other alloys. [doi:10.2320/jinstmet.J2013010].

    Original languageEnglish
    Pages (from-to)295-299
    Number of pages5
    JournalNippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals
    Volume77
    Issue number8
    DOIs
    Publication statusPublished - 2013 Aug

    Fingerprint

    fatigue life
    Stress-strain curves
    Fatigue of materials
    curves
    Creep
    Steel
    Plastic deformation
    plastics
    steels
    stress ratio
    fatigue tests

    Keywords

    • A2024-T6
    • A6061-T6
    • Carbon steel
    • Cyclic stress-strain curve
    • Cyclic-creep
    • Fatigue
    • Mean stress
    • Ti-6Al-4V

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Materials Chemistry
    • Metals and Alloys
    • Condensed Matter Physics

    Cite this

    Investigation of the dominating mechanism of fatigue life for various alloys with CSSC on R = O and -1. / Komori, Ayumi; Watanabe, Eriko; Toda, Momoko; Kitazawa, Rumi; Yoshida, Makoto; Horibe, Susumu.

    In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals, Vol. 77, No. 8, 08.2013, p. 295-299.

    Research output: Contribution to journalArticle

    Komori, Ayumi ; Watanabe, Eriko ; Toda, Momoko ; Kitazawa, Rumi ; Yoshida, Makoto ; Horibe, Susumu. / Investigation of the dominating mechanism of fatigue life for various alloys with CSSC on R = O and -1. In: Nippon Kinzoku Gakkaishi/Journal of the Japan Institute of Metals. 2013 ; Vol. 77, No. 8. pp. 295-299.
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