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

Thiti Sirthanakorn, Masaki Tanaka, Kenji Higashida

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    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.

    Original languageEnglish
    Title of host publicationTHERMEC 2013 Supplement
    PublisherTrans Tech Publications
    Pages706-710
    Number of pages5
    ISBN (Print)9783038350743
    DOIs
    Publication statusPublished - Jan 1 2014
    Event8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013 - Las Vegas, NV, United States
    Duration: Dec 2 2013Dec 6 2013

    Publication series

    NameAdvanced Materials Research
    Volume922
    ISSN (Print)1022-6680

    Other

    Other8th International Conference on Processing and Manufacturing of Advanced Materials: Processing, Fabrication, Properties, Applications, THERMEC 2013
    Country/TerritoryUnited States
    CityLas Vegas, NV
    Period12/2/1312/6/13

    All Science Journal Classification (ASJC) codes

    • Engineering(all)

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