炭素鋼の歪時効硬化について

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タイトル別名
  • On Strain Age Herdening of Carbon Steel (Study on Anneal Hardening of Two Phase Alloys, 1st Report)
  • タンソ コウ ノ ワイ ジコウ コウカ ニ ツイテ

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抄録

Strain age-hardening of carbon steel occurs in two stages during annealing after cold-working. The primary hardening at about 100°C takes place within the ferrite phase, and it may be reasonably explained by Cottrell’s mechanism, while the secondary in the range of 150∼340°C becomes marked with increase of the carbon content, and in addition, it is hardly accompanied by a rise of yield point upon measuring under a stress of the same kind and direction as those of prior working. It probably shows that the latter hardening is associated with the phase boundaries, since it is not so pronounced in the ferrite phase unlike in α solid-solution of brass, and that it is due, as in the case of α brass, to the removal of Bauschinger effect, which is more marked with the higher carbon steels. The secondary hardening in a given steel is, hence, chiefly affected by the arrangement, the shape and size of the cementite particles.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 24 (8), 514-518, 1960

    公益社団法人 日本金属学会

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