Strengthening and hydrogen embrittlement of ultrafine-grained Fe-0.01mass% C alloy processed by high-pressure torsion

Yoji Mine, Shunsaku Matsumoto, Zenji Horita

    研究成果: ジャーナルへの寄稿学術誌査読

    16 被引用数 (Scopus)

    抄録

    This study was conducted to elucidate the effects of annealing and hydrogenation on the tensile properties of an Fe-0.01. mass% C alloy processed by high-pressure torsion (HPT). By HPT processing, the tensile strength was increased to ∼1500. MPa through grain refinement. Low-temperature annealing further strengthened the HPT-processed specimen because of a simultaneous effect of carbide precipitation and grain refinement. Reduction in the dislocation density and the fraction of low-angle grain boundaries through warm-temperature annealing led to a decrease in hydrogen uptake when the specimens were exposed to high-pressure gaseous hydrogen, and they became less sensitive to hydrogen embrittlement (HE).

    本文言語英語
    ページ(範囲)2969-2977
    ページ数9
    ジャーナルCorrosion Science
    53
    9
    DOI
    出版ステータス出版済み - 9月 2011

    !!!All Science Journal Classification (ASJC) codes

    • 化学 (全般)
    • 化学工学(全般)
    • 材料科学(全般)

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