Cr-Mo鋼におけるMX型微細炭化物の析出挙動

• 柚賀 正雄

  JFEスチール（株） スチール研究所

• 林 謙次

  JFEスチール（株）　西日本製鉄所

• 遠藤 茂

  JFEスチール（株） スチール研究所

書誌事項

タイトル別名

• Precipitation Behavior of Fine MX Type Carbide in Cr-Mo Steels
• Cr-Moコウ ニ オケル MXガタ ビサイ タンカブツ ノ セキシュツ キョドウ

抄録

This study deals with the influence of Ti addition on softening behavior of the martensite structure and precipitation behavior for 2 1/4Cr-1Mo-V steel. The fine MX type (Mo, V) C and (Mo, V, Ti ) C precipitate with heat treatment at from 600 to 700 deg. C after cooling from 1350 deg. C. These fine carbides coarse with the solute and precipitation of V, then the composition of carbides change to V-rich. (Mo, V, Ti) C in Ti-bearing steel keeps fine size even after long time heat treatment at high temperature. It is difficult to understand the retardation of coarsening of (Mo, V, Ti) C by Ostwald ripening theory. We therefore propose a hypothesis that (Mo, V, Ti) C is consequently maintained at fine size without coarsening by Ostwald ripening theory because the fine (Mo, V, Ti) C is practically insoluble due to very low solubility of Ti at heat treat temperature.

収録刊行物

• 材料

  材料 64 (9), 732-738, 2015

  公益社団法人 日本材料学会

キーワード

• Cr-Mo steel
• Coarse grin HAZ
• Ti-add steel
• MX fine carbide
• Ostwald ripening

詳細情報

• CRID: 1390282680420820736
• NII論文ID: 130005098883
• NII書誌ID: AN00096175
• DOI: 10.2472/jsms.64.732
• ISSN: 18807488
• ISSN: 05145163
• NDL書誌ID: 026757088
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I026757088
• Web Site: https://www.jstage.jst.go.jp/article/jsms/64/9/64_732/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • NDL
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可