Two-step brittle-to-ductile transitions in pearlitic steels

Thiti Sirthanakorn, Masaki Tanaka, Kenji Higashida

    研究成果: Chapter in Book/Report/Conference proceedingConference contribution

    1 被引用数 (Scopus)

    抄録

    The brittle-to-ductile transition in fully pearlitic steels was investigated. The temperature dependence of the absorbed impact energy was measured with the blade speed of 0.0033 m/s. The absorbed energy per unit area increased with two steps as the test temperature increased: the first jump of around 10 kJm-2 at 130 K and the second jump of around 22 kJm-2 at 273 K. The twice jumps of the absorbed energy suggests a two-step brittle-to-ductile transition in fully pearlitic steels. SEM images of side surfaces exhibited that micro-cracks propagated through cementite lamellae at temperatures below only those of the second jump of the absorbed energy, suggesting that the deformability of cementite controls the second jump.

    本文言語英語
    ホスト出版物のタイトルTHERMEC 2013 Supplement
    出版社Trans Tech Publications
    ページ706-710
    ページ数5
    ISBN(印刷版)9783038350743
    DOI
    出版ステータス出版済み - 1 1 2014
    イベント8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013 - Las Vegas, NV, 米国
    継続期間: 12 2 201312 6 2013

    出版物シリーズ

    名前Advanced Materials Research
    922
    ISSN(印刷版)1022-6680

    その他

    その他8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013
    国/地域米国
    CityLas Vegas, NV
    Period12/2/1312/6/13

    All Science Journal Classification (ASJC) codes

    • 工学(全般)

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