Considering the mechanisms causing reduction of fretting fatigue strength by hydrogen

Masanobu Kubota, Yuki Shiraishi, Ryosuke Komoda, Yoshiyuki Kondo, Jader Furtado

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    4 被引用数 (Scopus)

    抄録

    The fretting fatigue test of austenitic stainless steels, JIS SUS304 and SUS316, was carried out in 0.12MPa hydrogen and air. The fretting fatigue strength of both materials was reduced by hydrogen. One of the possible causes was adhesion between the fretting surfaces which was predominant in hydrogen. The effect of specimen finishing on adhesion was also verified. For this purpose, two surface roughness were prepared with Ra = 0.420μm and 0.008μm. During the fretting fatigue test of these specimens in air, adhesion occurred in the smoother surface specimen but did not occur in the rougher surface specimen. As a result, the fretting fatigue strength decreased when adhesion occurred. Therefore, it can be considered that adhesion resulted in the reduction of the fretting fatigue strength in smoother specimens in air and in 0.12MPa hydrogen. Strain-induced martensite was found in the region of the adhered part, possibly due to the severe cyclic strain occurred locally at the adhered region.

    本文言語英語
    ホスト出版物のタイトル19th European Conference on Fracture
    ホスト出版物のサブタイトルFracture Mechanics for Durability, Reliability and Safety, ECF 2012
    出版社European Conference on Fracture, ECF
    ISBN(印刷版)978-5-905576-18-8
    出版ステータス出版済み - 2012
    イベント19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012 - Kazan, ロシア連邦
    継続期間: 8 26 20128 31 2012

    出版物シリーズ

    名前19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012

    その他

    その他19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012
    国/地域ロシア連邦
    CityKazan
    Period8/26/128/31/12

    All Science Journal Classification (ASJC) codes

    • 安全性、リスク、信頼性、品質管理

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