Journal
ENGINEERING FRACTURE MECHANICS
Volume 76, Issue 10, Pages 1460-1473Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.engfracmech.2008.12.007
Keywords
Ferritic-martensitic steels; Creep failure; Local approach; Finite element simulation
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A multi-material local approach to creep damage was applied to a ferritic-martensitic ASME Grade 91 steel welded joint at 625 degrees C. Focus was made on the detailed analysis of the most sensitive area of the weld i.e. the intercritical heat affected zone. Prediction of creep failure of the weld well agrees with experimental results. The model was then applied to the case of a seam-welded pipe exhibiting a roof defect, creep tested at 580 degrees C, showing consistent results with a more classical engineering assessment. (C) 2008 Elsevier Ltd. All rights reserved.
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