OS1511 クリープ疲労したフェライト系耐熱鋼(12CR-2W)の組織・力学特性評価

• 長島 伸夫

  NIMS

• 早川 正夫

  NIMS

• 木村 恵

  NIMS

書誌事項

タイトル別名

• OS1511 Microstructure and mechanical properties evaluations for creep-fatigued ferritic heat-resisting steel (12Cr-2W)

抄録

Field emission-type scanning backscattered electron microscope observation were performed on a ferritic heat-resisting steel that contained 12mass% chromium and 2mass% tungsten to characterize subgrain structure. The size distributions of the subgrains were quantitatively evaluated before and after a creep-fatigue testing, respectively. It was shown that subgrains neighboring the prio austenite grain boundaries become coarse during the creep-fatigue testing. And the nanoindentation test were performed on coarse subgrain, and it was estimated that Vickers hardness was 150, and, in contrast, the hardness before creep fatigue was 200. It is suggested that the coarse subgrains neighboring grain boundaries plays an important role of the creep-fatigue fracture mechanism.

収録刊行物

• M&M材料力学カンファレンス

  M&M材料力学カンファレンス 2013 (0), _OS1511-1_-_OS1511-3_, 2013

  一般社団法人 日本機械学会

キーワード

• ferritic chromium-tungsten steel
• tempered martensite
• subgram
• block
• grain boundary precipitate
• creep-fatigue
• nano-indentation

詳細情報

• CRID: 1390001205873759616
• NII論文ID: 110009936759
• DOI: 10.1299/jsmemm.2013._os1511-1_
• ISSN: 24242845
• Web Site: https://www.jstage.jst.go.jp/article/jsmemm/2013/0/2013__OS1511-1_/_pdf
• 本文言語コード: ja
• データソース種別:
  • JaLC
  • Crossref
  • CiNii Articles
• 抄録ライセンスフラグ: 使用不可