低炭素18%Crステンレス鋼におけるリヂング現象

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書誌事項

タイトル別名
  • Ridging in 18% Chrome Stainless Steel
  • テイタンソ 18パーセント Cr ステンレス コウ ニ オケル リジング ゲンショウ

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抄録

The relation between ridging phenomenon and rolling or recrystallization textures has been investigated on stainless steel strips, with decreased contents of C and N (without α-γ zone). The strips have a banded structure by 95% cold rolling. It has been found that the ridging phenomenon can be classified into the following three types. One of them is caused by crystal rotation on the rolled surface, consisting of alternate ridges and grooves running in the cold rolling direction. The secondary one is closely related to the banded structure (as (001)[110], (111)[110]) produced by cold rolling. The third one shows the largest ridging on the surface of the material as the result of recovery and secondary recrystallization. Then it has been concluded that the ridging phenomenon is apparently promoted by the banded structure with the plastic anisotropy produced by cold rolling and the amount of ridging is diminished by randomization of orientations. Hence, in the 0.02∼0.12%C stainless steels, a partial randomization of the banded structure due to transformation will have an effect of minimizing the ridging. The heat treatment at 1100°C for 1∼3 min, followed by rapid cooling, is effective in breaking up or reorienting the original banded structure. This normalizing treatment may be given to the material at each hot-rolled thickness, but it will have a greater effect just before reaching the final thicknees. For the low carbon stainless steel (<0.01%C) without the α-γ zone, it is essential that initial ferrite grain size should be as small as possible and the (001)[110] banded structure would not be contained in the rolling textures.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 33 (10), 1121-1128, 1969

    公益社団法人 日本金属学会

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