ショットピーニングしたマルエージング鋼の疲労強度に及ぼす逆変態オーステナイトの影響

書誌事項

タイトル別名
  • Influence of Reversion Austenite on Fatigue Strength of Shot-Peened Maraging Steel.
  • ショットピーニング シタ マルエージング コウ ノ ヒロウ キョウド ニ オヨボス ギャクヘンタイ オーステナイト ノ エイキョウ

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抄録

A maraging steel has low fatigue strength for its high static strength. In the present study, the influences of shot peening and reversion austenite on fatigue strength of a maraging steel were investigated to achieve the improvement of fatigue strength of the steel. By shot peening, fatigue strength was markedly increased and fracture mode changed in order of surface, combined type of surface and interior and interior fractures with decrease of the stress level. Fatigue strength in the surface fracture region was still increased by double shot peening which improved the surface integrity i.e. surface roughness, hardness and compressive residual stress. On the other hand, fatigue strength in the interior fracture region was increased by the formation of reversion austenite where as it was not affected by the shot peening condition.

収録刊行物

  • 材料

    材料 50 (10), 1126-1132, 2001

    公益社団法人 日本材料学会

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