Transformation behavior in low carbon 13% chromium-3% copper stainless steel

Takuya Hara, Ryuji Uemori, Akihiro Miyasaka

研究成果: Contribution to journalArticle査読

抄録

Martensitic transformation and γ → α transformation behavior were investigated in low carbon 13% chromium stainless steels containing 2% nickel or 3% copper. The main conclusions are as follows: (1) Hardness of 2% nickel added low carbon 13% chromium steel was independent of cooling rate after hot working at large reduction. Structure of the steel was martensitic even after being subjected to such large reduction of 75%. This result suggests that ferritic transformation was hard to occur under an usual cooling rate because austenite phase was sufficiently stabilized by the addition of chromium and nickel. (2) Austenite to ferrite transformation occurred only for the low carbon 13% chromium 3% copper steel without nickel even at the small cooling rate, such as 0.01 K/s. This result was mainly attributed to the unstabilization of austenite phase which caused by the precipitation of ε-Cu. Furthermore, austenite of the steel becomes easy to transform to ferrite due to heavy hot working. This phenomenon was seemed to be caused by the increase in the area of austenite grain boundary owing to recrystallization. Thus, it was considered that the nucleation of ε-Cu at the grain boundaries promoted ferrite formation.

本文言語英語
ページ(範囲)674-681
ページ数8
ジャーナルTetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
86
10
DOI
出版ステータス出版済み - 2000
外部発表はい

All Science Journal Classification (ASJC) codes

  • Condensed Matter Physics
  • Physical and Theoretical Chemistry
  • Metals and Alloys
  • Materials Chemistry

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