18%Niマルエージング鋼の疲労特性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 Property of 18%Ni Maraging Steel.
  • 18パーセント Ni マルエージング コウ ノ ヒロウ トクセイ ニ オヨボス

この論文をさがす

抄録

The influence of reversion austenite on the fatigue behavior of a maraging steel has been investigated by using 18%Ni-8%Co-5%Mo steel. The behaviors of age hardening and reversion from martensite to austenite were examined first under various aging conditions in the temperature range of 750-850K. These aging conditions were chosen so that a selected volume fraction of austenite (γvol%=1, 2, 3 or 24%) was formed in the age hardened maraging steel. The specimens were subjected to fatigue test, crack growth test and fractography. The results obtained are as follows:<br>(1) The formation of reversion austenite results in a great improvement of fatigue strength. Especially, a small amount of austenite (2-3vol%) markedly increases the fatigue limit of a maraging steel without reducing the hardness so much. Due to the existence of reversion austenite, crack growth tends to be suppressed and the maximum length of non-propagating crack becomes longer.<br>(2) The existence of reversion austenite improves the fatigue fracture toughness.

収録刊行物

  • 材料

    材料 44 (497), 181-186, 1995

    公益社団法人 日本材料学会

被引用文献 (4)*注記

もっと見る

参考文献 (10)*注記

もっと見る

詳細情報 詳細情報について

問題の指摘

ページトップへ