２　１／４Ｃｒ‐１Ｍｏ鋼溶接部Ｔｙｐｅ　ＩＩＩおよびＴｙｐｅ　ＩＶクリープ損傷のミクロ・マクロシミュレーション

• 川島 扶美子

  三菱重工業(株)長崎研究所

• 猪狩 敏秀

  三菱重工業(株)長崎研究所

• 時吉 巧

  三菱重工業(株)神戸造船所

• 多田 直哉

  岡山大学大学院自然科学研究科

書誌事項

タイトル別名

• Micro-Macro Simulation of Type III and Type IV Creep Damage in 2 1/4Cr-1Mo Steel Welds
• 2 1/4Cr-1Mo鋼溶接部Type3およびType4クリープ損傷のミクロ・マクロシミュレーション
• 2 1 4Cr 1Mo コウ ヨウセツブ Type3 オヨビ Type4 クリープ ソンショウ ノ ミクロ マクロ シミュレーション

抄録

A simulation method of the creep damage progress combining the random fracture resistance model and FEM elastic-creep analysis was proposed and was applied to the evaluation of Type III and Type IV creep damage respectively in the coarse and fine grain heat affected zone (HAZ) in welded joints of 2 1/4Cr-1Mo steel. Firstly following the previous work on the fine grain HAZ, parameters for the coarse grain HAZ were identified for simulating the increase of number density of small defects on the basis of the random fracture resistance modeling. Secondly the simultaneous damage simulation for both fine and coarse grain HAZ was applied to both the welded joint model test and the burst test of elbow. A possibility of predicting the final failure time of welded joint was also discussed on the basis of the effective stress against the final failure surface. The proposed simulation successfully reproduced the increase of the number density of small defects in the fine and the coarse grain HAZ, and could predict the failure time of welded joints.

収録刊行物

• 材料

  材料 56 (2), 106-113, 2007

  公益社団法人 日本材料学会

キーワード

• Creep
• Cavity
• Defect
• Creep damage
• Type III
• Type IV
• Welded joint
• 2 1/4Cr-1Mo steel

詳細情報

• CRID: 1390001205417788800
• NII論文ID: 130002085931
• NII書誌ID: AN00096175
• DOI: 10.2472/jsms.56.106
• ISSN: 18807488
• ISSN: 05145163
• NDL書誌ID: 8689039
• Web Site: https://ndlsearch.ndl.go.jp/books/R000000004-I8689039
• 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