Micro-Macro Simulation of Type III and Type IV Creep Damage in 2 1/4Cr-1Mo Steel Welds

DOI Web Site 6 Citations 6 References

Bibliographic Information

Other Title
  • 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
  • 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

Search this article

Abstract

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.

Journal

Citations (6)*help

See more

References(6)*help

See more

Keywords

Details 詳細情報について

Report a problem

Back to top