オースフォームされたFe-Ni-Cマルテンサイトの焼戻し挙動について

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タイトル別名
  • On the Tempering Behavior of Martensite in an Ausformed Fe-Ni-C Alloy
  • オースフォーム サレタ Fe-Ni-Cマルテンサイト ノ ヤキモドシ キョドウ ニ ツイテ

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抄録

The tempering behavior of martensite in an ausformed Fe-27.56%Ni-0.44%C alloy was examined by means of microhardness tests, optical microscopy and transmission electron microscopy. The tempered martensite in the ausformed specimen showed a higher hardness than the non-ausformed throughout the range of tempering temperatures, and maintained a higher hardness level up to higher temperatures than that of the non-ausformed. The tempered martensite in the ausformed specimen was less etched with nital than that in the non-ausfomed. The transmission electron micrographs showed that the ausformed martensite had a dense, cloudy distribution of dislocations. The carbide precipitated at the dislocations and also on the twin faults. The precipitated carbides hardly grew at the dislocations but grew on the twin faults. The carbide precipitation and its growth on the twin faults in the ausformed martensite were depressed and delayed during tempering due to the presence of dense dislocations.

収録刊行物

  • 日本金属学会誌

    日本金属学会誌 28 (8), 433-438, 1964

    公益社団法人 日本金属学会

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