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

Takuya Hara, Ryuji Uemori, Akihiro Miyasaka

研究成果: ジャーナルへの寄稿記事

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.

元の言語英語
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
発行部数10
DOI
出版物ステータス出版済み - 1 1 2000
外部発表Yes

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carbon 13
Stainless Steel
Chromium
austenite
Austenite
Copper
stainless steels
chromium
Nickel
Carbon
Stainless steel
Steel
copper
chromium steels
Ferrite
hot working
ferrites
Hot working
nickel
Cooling

All Science Journal Classification (ASJC) codes

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

これを引用

Transformation behavior in low carbon 13% chromium-3% copper stainless steel. / Hara, Takuya; Uemori, Ryuji; Miyasaka, Akihiro.

:: Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 巻 86, 番号 10, 01.01.2000, p. 674-681.

研究成果: ジャーナルへの寄稿記事

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title = "Transformation behavior in low carbon 13{\%} chromium-3{\%} copper stainless steel",
abstract = "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.",
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