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 |
| 巻 | 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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All Science Journal Classification (ASJC) codes
- Mechanics of Materials
- Mechanical Engineering
- Metals and Alloys
- Materials Chemistry
これを引用
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
}
TY - JOUR
T1 - Formation of intergranular M23C6 in sensitized type-347 stainless steel
AU - Fukunaga, Tatsuya
AU - Kaneko, Kenji
AU - Kawano, Rika
AU - Ueda, Kakeru
AU - Yamada, Kazuhiro
AU - Nakada, Nobuo
AU - Kikuchi, Masao
AU - Barnard, Jonathan Simon
AU - Midgley, Paul Anthony
PY - 2014/2/26
Y1 - 2014/2/26
N2 - 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.
AB - 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.
UR - http://www.scopus.com/inward/record.url?scp=84894265871&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84894265871&partnerID=8YFLogxK
U2 - 10.2355/isijinternational.54.148
DO - 10.2355/isijinternational.54.148
M3 - Article
AN - SCOPUS:84894265871
VL - 54
SP - 148
EP - 152
JO - ISIJ International
JF - ISIJ International
SN - 0915-1559
IS - 1
ER -