機械的ひずみまたは応力繰返しを独立に与えた場合の熱疲れ挙動

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タイトル別名
  • Thermal Fatigue Behaviors under Cyclic Variation of Stress or Mechanical Strain
  • キカイテキヒズミ マタハ オウリョク クリカエシ オ ドクリツ ニ アタエタ バアイ ノ ネツ ツカレ キョドウ

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抄録

Thermal Fatigue behaviors under cyclic mechanical strain were reported previously. In this report thermal fatigue behaviors under cyclic stress are compared with that under cyclic mechanical strain. The following results are obtained. The life on thermal fatigue under cyclic stress is shorter than that under cyclic mechanical stram. It has been found that the variation of elongation of the specimen under 700-300°C temperature cycling is different from that under 500-200°C temperature cycling. In 500-200°C temperature cycling the increase of elongation at the beginning of cycling is quick, then it turns slow and just before fracture it becomes quick again. In 700-300°C temperature cycling, however, the quick increase of elongation at the beginning of cycling has not been found.

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