低炭素高マンガン鋼の疲労強度評価

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タイトル別名
  • Fatigue Strength of Low-Carbon High-Manganese Steels and Their Fatigue Crack Initiation.
  • テイ タンソ コウ マンガン コウ ノ ヒロウ キョウド ヒョウカ

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Rotating bending fatigue tests had been performed to investigate the effect of carbon content on the characteristics of fatigue crack initiation, using four kinds of high-manganese steels with carbon content between 0.025%-0.10%. Although there exist nonpropagating cracks in HM steel (0.178% carbon) under the fatigue limit of l07 cycles, these cracks are not observed in four kinds of HM steels (0.025-0.1% carbon) under the stress of each fatigue limit by l07 cycles. From this, the limit of existence for nonpropagating cracks is concluded to be between 0.1%∼0.2% of carbon content, and the characteristics for crack initiation under the fatigue limit of l07 cycles are founded to be prodominantly influenced by the carbon content.

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