Considering the mechanisms causing reduction of fretting fatigue strength by hydrogen

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

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    4 Citations (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publication19th European Conference on Fracture
    Subtitle of host publicationFracture Mechanics for Durability, Reliability and Safety, ECF 2012
    PublisherEuropean Conference on Fracture, ECF
    ISBN (Print)978-5-905576-18-8
    Publication statusPublished - 2012
    Event19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012 - Kazan, Russian Federation
    Duration: Aug 26 2012Aug 31 2012

    Publication series

    Name19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012

    Other

    Other19th European Conference on Fracture: Fracture Mechanics for Durability, Reliability and Safety, ECF 2012
    CountryRussian Federation
    CityKazan
    Period8/26/128/31/12

    All Science Journal Classification (ASJC) codes

    • Safety, Risk, Reliability and Quality

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