Effect of load variation on the transition of crack path in delayed failure of 12Cr steel

Yoshiyuki Kondo, Masanobu Kubota, Tomohiro Nagasue

    研究成果: ジャーナルへの寄稿学術誌査読

    抄録

    The crack path of 12Cr martennltlc stainless steel tempered at low temperature is intergranular in the case of delayed failure and transgranular in the case of corrosion fatigue. The effect of varying load on the transition of crack path In delayed failure was examined. Delayed failure tent was done in pure water under triangularly varying load. The crack path was dependent on load frequency. Higher frequency resulted in transgranular crack and lower frequency resulted in intergranular crack. There was a threshold frequency below which intergranular crack could appear. An insertion of a few cycles of rapid loading into the low frequency loading which usually resulted in intergranular crack caused the transition into a transgranular crack.

    本文言語英語
    ページ(範囲)1249-1255
    ページ数7
    ジャーナルNihon Kikai Gakkai Ronbunshu, A Hen/Transactions of the Japan Society of Mechanical Engineers, Part A
    74
    9
    DOI
    出版ステータス出版済み - 9月 2008

    !!!All Science Journal Classification (ASJC) codes

    • 材料科学(全般)
    • 材料力学
    • 機械工学

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