Creep crack growth analysis of welded joints for high cr heat resisting steel

M. Tubuchi, H. Hongo, T. Watanabe, A. T. Yokobori

Research output: Chapter in Book/Report/Conference proceedingConference contribution

8 Citations (Scopus)

Abstract

The creep strength of weldment for high Cr ferritic steels decreases due to Type IV damages in the heat affected zone during long-term services at high temperatures. It is important to predict initiation and growth of creep voids and cracks in weldment. This paper clarified the Type IV crack initiation and growth properties in fine-grained HAZ of weldments for tungsten strengthened high Cr steels. On the basis of experimental results, the computational simulation for Type IV crack growth behavior was conducted. The effect of multiaxial stress condition on vacancy diffusion and crack initiation was discussed.

Original languageEnglish
Title of host publicationFatigue and Fracture Mechanics
Subtitle of host publication35th Volume
PublisherASTM International
Pages93-101
Number of pages9
ISBN (Print)0803134061, 9780803134065
Publication statusPublished - 2007
Externally publishedYes
Event35th ASTM National Symposium on Fatigue and Fracture Mechanics - Reno, NV, United States
Duration: 2005 May 182005 May 20

Publication series

NameASTM Special Technical Publication
Volume1480 STP
ISSN (Print)0066-0558

Other

Other35th ASTM National Symposium on Fatigue and Fracture Mechanics
Country/TerritoryUnited States
CityReno, NV
Period05/5/1805/5/20

Keywords

  • Creep crack growth
  • FEM
  • High Cr heat resisting steel
  • Type IV fracture
  • Welded joint

ASJC Scopus subject areas

  • Materials Science(all)

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