Room Temperature Creep Behavior of Stainless Steels

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  • ステンレス鋼の常温におけるクリープ変形挙動
  • ステンレス コウ ノ ジョウオン ニ オケル クリープ ヘンケイ キョドウ

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Room temperature creep behavior has been investigated for typical stainless steels (SUS304, SUS430, SUS410L). The mechanism of creep is discussed in comparison with creep data on a carbon steel (SM400).<BR>The results are summerized as follows:<BR>1) Stainless steels showed creep deformation at a stress around 0.2% proof stress. Though creep rate decreased monotonously with increase in time, deformation did not ceased even at a time 1000 h. The creep curve of SUS304 steel followed a logarithmic creep law.<BR>2) No creep was observed in steel SM400 below a critical strain rate at around 10-8S-1.<BR>3) The facts that interstitial free steels showed room temperature creep, and that SUS304 steel showed no creep at 300°C suggest that the suppression of creep can be attributed to the dynamic strain aging due to the interaction between dislocation and interstitial carbon and nitrogen atoms.

Journal

  • Tetsu-to-Hagane

    Tetsu-to-Hagane 79 (1), 98-104, 1993

    The Iron and Steel Institute of Japan

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