FCC系鉄基合金圧延材の降伏強度に及ぼす変形双晶の影響

  • 森川 龍哉
    九州大学大学院工学研究院材料工学部門
  • 諸永 拓
    九州大学大学院工学府物質プロセス工学専攻(現:(株)コベルコ科研)
  • 東田 賢二
    九州大学大学院工学研究院材料工学部門

書誌事項

タイトル別名
  • The Influence of Deformation Twinning on Yield Strength in Cold-rolled FCC Ferrous Alloy
  • FCCケイ テツキ ゴウキン アツエンザイ ノ コウフク キョウド ニ オヨボス ヘンケイソウショウ ノ エイキョウ

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抄録

The effect of a fine lamellar structure due to deformation twin on the yield strength of fcc ferrous alloys has been investigated by using cold-rolled Fe-36mass%Ni alloy and 310S stainless steels. Microstructural evolution during cold-rolling of both alloys has been also examined by using transmission electron microscopy. In cold-rolled Fe-36mass%Ni alloy, a kind of layered cell structure was observed, but no deformation twin was found. On the other hand, in a 310S steel, a fine lamellar structure of twin-matrix (T-M) was markedly developed with cold-rolling. The cold-rolled 310S steels exhibited yield strengths about 2 times higher than those of the rolled Fe-Ni alloys in spite that the yield strength of as-annealed 310S is lower than that of as-annealed Fe-Ni alloy. This indicates that the occurrence of fine T-M lamellae during cold-rolling enhances the evolution of fine-grained structure, which causes the marked increase in the yield strength of the rolled specimens.

収録刊行物

  • 鉄と鋼

    鉄と鋼 91 (11), 834-838, 2005

    一般社団法人 日本鉄鋼協会

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