軟鋼の歪時効に及ぼす応力の影響

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タイトル別名
  • The Effect of Stress on the Process of Strain-aging of Mild Steel (Changes in Properties of Mild Steel Caused by Stress-aging Treatment, 7th Report)
  • ナンコウ ノ ワイ ジコウ ニ オヨボス オウリョク ノ エイキョウ

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抄録

It was confirmed in the previous papers that the static strength of mild steel was markedly improved by stress-aging (strain-aging under a stress), because the stress imposed on the specimen during strain-aging may accelerate the aging phenomena. A further study was made to examine the effect of stress on the process of strain-aging of mild steel. Specimens (0.05%C mild steel) were strained to 9% in tension and then aged under tensile stresses at various temperatures, from 55°C up to 250°C. The results obtained are as follows: (1) It is sure that strain-aging of mild steel is accelerated by stress imposed on the specimen. (2) The maximum increase of hardness caused by strain-aging increases, and time when the hardness reaches its maximum value decreases with the increase of stress imposed on the specimen. (3) The activation energy for the process of strain agang is unaltered whether a stress is applied or not during strain-aging, so that the main process of strain-aging under stresses seems to be the same in itself as that of conventional strain-aging.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 23 (3), 141-144, 1959

    公益社団法人 日本金属学会

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