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    Volume 7, Issue 4 (June 2018)

    Special Issue Paper

    Residual Stress Modification and Mechanisms of Bearing Steel with Different Microstructures during Water-Jet Cavitation Peening

    (Received 18 July 2017; accepted 13 December 2017)

    Published Online: 07 June 2018

    CODEN: MPCACD

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    Abstract

    Water-jet cavitation peening (WCP) is used to increase the hardness and induce the formation of a compressive residual stress layer on the surface through the shock wave pressure, which is produced by the collapse of small bubbles of a cavitation jet at the surface of materials. In this article, a pressure sensitive paper is applied to determine the pressure field distribution of WCP. WCP is carried out on the bearing steel 100Cr6 with different microstructures, which are heat-treated differently. The hardness, residual stress distribution, and microstructure of bearing steels at the same observation points are compared, respectively, before and after WCP. The research indicates that both the hardness and residual stress are increased with the peening time. It also proves that this method has different strengthening limits for materials with different microstructures because of the different mechanisms of WCP.

    Author Information:

    Miao, Shan
    Graduate School of Saitama Institute of Technology, Fukaya,

    Ju, Dong-Ying
    Department of Material Science and Engineering, Saitama Institute of Technology, Fukaya,

    Zhao, Hui-Jun
    School of Mechanical Engineering, Hangzhou Dianzi University, Hangzhou, Jianggan District


    Stock #: MPC20170108

    ISSN:2379-1365

    DOI: 10.1520/MPC20170108

    Author
    Title Residual Stress Modification and Mechanisms of Bearing Steel with Different Microstructures during Water-Jet Cavitation Peening
    Symposium ,
    Committee E42