Effect of solute copper on yield strength in dislocation-strengthened steels

Junaidi Syarif, Koichi Nakashima, Toshihiro Tsuchiyama, Setsuo Takaki

    研究成果: ジャーナルへの寄稿学術誌査読

    6 被引用数 (Scopus)

    抄録

    The effect of solute Copper (Cu) on yield strength was investigated in dislocation-strengthened iron such as martensitic steels and cold-rolled steels having various dislocation densities. Yield strength of the Cu bearing martensitic steels increases with increasing the solute Cu content. However, the increment of yield strength by Cu solid solution is smaller in the martensitic steels than in the ferritic steels. Dislocation density of martensitic steels increases with increasing Cu content, and yield strength is also enhanced depending on the dislocation density. The increment of yield strength can be reasonably explained by dislocation strengthening mechanism based on Bailey-Hirsch relationship. In the cold-rolled Cu bearing ferritic steels, the strengthening by Cu solid solution is significant but it tends to disappear with increasing the dislocation density. These facts indicate that yield strength of the steels with high dislocation density is determined by dislocation strengthening and the contribution of Cu solid solution disappears due to the high density of dislocations.

    寄稿の翻訳タイトルEffect of solute copper on yield strength in dislocation-strengthened steels
    本文言語日本語
    ページ(範囲)790-795
    ページ数6
    ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
    91
    11
    DOI
    出版ステータス出版済み - 11月 2005

    !!!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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