Mechanism behind brittle-to-ductile transition understood by the interaction between a crack and dislocations

Kenji Higashida, Masaki Tanaka

    研究成果: ジャーナルへの寄稿総説査読

    4 被引用数 (Scopus)

    抄録

    Fundamental mechanism governing the fracture toughness of materials is reviewed in terms of a concept of the interaction between a crack and dislocations. The mechanism behind brittle-to-ductile transition (BDT) is demonstrated using a simple model based on dislocation dynamics and the theory of cracktip shielding by dislocations. The effects of dislocation mobility as well as dislocation sources on the BDT behavior are discussed, which enables us to understand the various factors such as grain refinement influencing fracture toughness.

    本文言語英語
    ページ(範囲)704-709
    ページ数6
    ジャーナルisij international
    52
    4
    DOI
    出版ステータス出版済み - 2012

    All Science Journal Classification (ASJC) codes

    • 材料力学
    • 機械工学
    • 金属および合金
    • 材料化学

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