Alloying effect on reverse transformation from tempered martensite

Goro Miyamoto, Hirokazu Usuki, Zhao Dong Li, Tadashi Furuhara

研究成果: Conference contribution

抄録

Effects of lmass% Si, Mn and Cr addition on kinetics of reverse transformation at 1073K from tempered high carbon martensite structure were investigated. In all the alloys, austenite nucleates at cementite particles and grows accompanying with dissolving cementite. Hardness increases with proceeding of reverse transformation. The rate for reverse transformation is fastest in the Fe-0.6C binary alloy and becomes slower by the addition of Mn, Si and Cr. In particular, retarding effect in the Cr alloy is significant and holding time three orders of magnitude longer than the other alloys is necessary to complete reverse transformation. In Si and Mn-added alloys, austenite growth is controlled by carbon diffusion as well as in the Fe-0.6C alloy. On the other hand, in Cr-added alloy, long range diffusion of Cr diffusion is necessary for austenite growth, causing extremely sluggish reaction rate.

本文言語English
ホスト出版物のタイトルProceedings of the 17th IFHTSE Congress
出版社The Japan Society for Heat Treatment (JSHT)
ページ482-485
ページ数4
ISBN(電子版)9780000000002
出版ステータスPublished - 2008 1 1
イベント17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008 - Kobe, Japan
継続期間: 2008 10 262008 10 28

出版物シリーズ

名前Proceedings of the 17th IFHTSE Congress
2

Other

Other17th International Federation for Heat Treatment and Surface Engineering Congress 2008, IFHTSE 2008
国/地域Japan
CityKobe
Period08/10/2608/10/28

ASJC Scopus subject areas

  • 表面、皮膜および薄膜
  • 凝縮系物理学
  • 材料力学

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