Formation of intergranular M23C6 in sensitized type-347 stainless steel

Tatsuya Fukunaga, Kenji Kaneko, Rika Kawano, Kakeru Ueda, Kazuhiro Yamada, Nobuo Nakada, Masao Kikuchi, Jonathan Simon Barnard, Paul Anthony Midgley

研究成果: ジャーナルへの寄稿記事

12 引用 (Scopus)

抄録

Formation of intergranular M23C6 carbides and thereafter Cr-depletion zones in commercially available type-347 stainless steels were observed by optical microscopy, conventional transmission electron microscopy and analytical transmission electron microscopy. At the early stage of sensitization, only NbC carbides were observed both intragranularly and intergranularly. At the later stage, formation of intergranular M 23C6 carbides and intergranular corrosion were found. A model is proposed to describe the formation kinetics of intergranular precipitation of NbC and of M23C6, as well as Cr-depletion zones, thermodynamically. Evolution mechanisms of intergranular precipitates were found in the order of 1) the formation of intergranular NbC, 2) the coarsening of NbC, 3) the formation of M23C6, then 4) the coarsening of M23C6 and formation of Cr-depletion zones.

元の言語英語
ページ(範囲)148-152
ページ数5
ジャーナルisij international
54
発行部数1
DOI
出版物ステータス出版済み - 2 26 2014

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Stainless Steel
Carbides
Stainless steel
Coarsening
Transmission electron microscopy
Optical microscopy
Precipitates
Corrosion
Kinetics

All Science Journal Classification (ASJC) codes

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

これを引用

Fukunaga, T., Kaneko, K., Kawano, R., Ueda, K., Yamada, K., Nakada, N., ... Midgley, P. A. (2014). Formation of intergranular M23C6 in sensitized type-347 stainless steel. isij international, 54(1), 148-152. https://doi.org/10.2355/isijinternational.54.148

Formation of intergranular M23C6 in sensitized type-347 stainless steel. / Fukunaga, Tatsuya; Kaneko, Kenji; Kawano, Rika; Ueda, Kakeru; Yamada, Kazuhiro; Nakada, Nobuo; Kikuchi, Masao; Barnard, Jonathan Simon; Midgley, Paul Anthony.

:: isij international, 巻 54, 番号 1, 26.02.2014, p. 148-152.

研究成果: ジャーナルへの寄稿記事

Fukunaga, T, Kaneko, K, Kawano, R, Ueda, K, Yamada, K, Nakada, N, Kikuchi, M, Barnard, JS & Midgley, PA 2014, 'Formation of intergranular M23C6 in sensitized type-347 stainless steel', isij international, 巻. 54, 番号 1, pp. 148-152. https://doi.org/10.2355/isijinternational.54.148
Fukunaga, Tatsuya ; Kaneko, Kenji ; Kawano, Rika ; Ueda, Kakeru ; Yamada, Kazuhiro ; Nakada, Nobuo ; Kikuchi, Masao ; Barnard, Jonathan Simon ; Midgley, Paul Anthony. / Formation of intergranular M23C6 in sensitized type-347 stainless steel. :: isij international. 2014 ; 巻 54, 番号 1. pp. 148-152.
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abstract = "Formation of intergranular M23C6 carbides and thereafter Cr-depletion zones in commercially available type-347 stainless steels were observed by optical microscopy, conventional transmission electron microscopy and analytical transmission electron microscopy. At the early stage of sensitization, only NbC carbides were observed both intragranularly and intergranularly. At the later stage, formation of intergranular M 23C6 carbides and intergranular corrosion were found. A model is proposed to describe the formation kinetics of intergranular precipitation of NbC and of M23C6, as well as Cr-depletion zones, thermodynamically. Evolution mechanisms of intergranular precipitates were found in the order of 1) the formation of intergranular NbC, 2) the coarsening of NbC, 3) the formation of M23C6, then 4) the coarsening of M23C6 and formation of Cr-depletion zones.",
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AU - Kaneko, Kenji

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AU - Ueda, Kakeru

AU - Yamada, Kazuhiro

AU - Nakada, Nobuo

AU - Kikuchi, Masao

AU - Barnard, Jonathan Simon

AU - Midgley, Paul Anthony

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