Characteristics of Luders deformation and their computer simulation based on a work-softening model

R. Onodera, I. Morita, R. Kamikihara, M. Aramaki

    研究成果: ジャーナルへの寄稿学術誌査読

    抄録

    We proposed a new constitutive equation to explain the Portevin-LeChatelier effect. In the present study, we have examined whether the equation is applicable to the yield point phenomena of low carbon steels or not. By using the constitutive equation, some characteristics of the yield point phenomena, i.e., 1. stress difference between upper and lower yield points, 2. yield point elongation, 3. strain rate in Luders band and 4. velocity and width of the band, were predicted. To determine these characteristics experimentally, tensile tests on low carbon steels were carried out at room temperature at various strain rates. Local strains were measured by using strain gage stuck on the specimen surface. The prediction based on the constitutive equation showed a good agreement with the experimental phenomena. Some discussions are also done regarding on the validity of assumptions adopted.

    本文言語英語
    ページ(範囲)41-48
    ページ数8
    ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
    87
    11
    DOI
    出版ステータス出版済み - 11月 2001

    !!!All Science Journal Classification (ASJC) codes

    • 凝縮系物理学
    • 物理化学および理論化学
    • 金属および合金
    • 材料化学

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