An Investigation of Hydrogen Environment Effect on the Strain Aging of Low-Carbon Steel through Vickers Hardness Test

    Volume 41, Issue 1 (January 2013)

    ISSN: 0090-3973

    CODEN: JTEOAD

    Published Online: 11 December 2012

    Page Count: 7


    Lee, Dongsun
    Dept. of Mechanical Engineering Science, Graduate School of Engineering, Kyushu Univ., Nishi-ku, Fukuoka

    Yamamoto, Aki-nori
    Dept. of Mechanical Engineering Science, Graduate School of Engineering, Kyushu Univ., Nishi-ku, Fukuoka

    Oda, Yasuji
    Dept. of Mechanical Engineering, Faculty of Engineering, Kyushu Univ., Nishi-ku, Fukuoka

    The Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), National Institute of Advanced Industrial Science and Technology (AIST), Nishi-ku, Fukuoka

    Noguchi, Hiroshi
    Dept. of Mechanical Engineering, Faculty of Engineering, Kyushu Univ., Nishi-ku, Fukuoka

    The Research Center for Hydrogen Industrial Use and Storage (HYDROGENIUS), National Institute of Advanced Industrial Science and Technology (AIST), Nishi-ku, Fukuoka

    (Received 9 May 2011; accepted 31 July 2012)

    Abstract

    In recent years, increasing attention has been paid to the effect of a hydrogen environment on the fatigue limit of hydrogen-power systems and infrastructure. In carbon steel, strain aging is one of the important factors influencing non-propagating crack behavior, which is related to the fatigue limit. In the present study, to investigate the effects of hydrogen on the strain aging of low-carbon steel (0.13 % carbon steel), Vickers hardness tests were carried out on the carbon steel. A couple of 0.13 % carbon steel specimens with a large-scale plastic zone were aging heat-treated; one was a hydrogen-charged specimen, whereas the other was an uncharged specimen. The Vickers hardness of the hydrogen-charged specimen was found to be lower than that of the uncharged specimen. This observation implies that hydrogen inhibits strain-aging hardening of low-carbon steel. The observation also suggests that hydrogen could affect the non-propagating crack behavior through the inhibition of strain aging.


    Paper ID: JTE20120190

    DOI: 10.1520/JTE20120190

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    Title An Investigation of Hydrogen Environment Effect on the Strain Aging of Low-Carbon Steel through Vickers Hardness Test
    Symposium , 0000-00-00
    Committee E04