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- Title
Effect of thermal ageing of CF8M on multi-axial ductility and application to fracture toughness prediction.
- Authors
Jeon, J.‐Y.; Kim, Y.‐J.; Kim, J.‐W.; Lee, S.‐Y.
- Abstract
This paper proposes a method to predict the thermal ageing effect on fracture toughness of CF8M cast stainless steel. The proposed method is based on multi-axial fracture strain combined with finite element damage analysis to simulate ductile tearing. Multi-axial fracture strain loci of un-aged and aged CF8M are determined by analyzing notched bar tensile test. It is shown that the thermal ageing effect on multi-axial fracture strain loci can be characterized by one constant. It is further shown that J-resistance curves of un-aged and aged CF8M can be predicted well from finite element damage analysis using multi-axial fracture strain loci. Implication of present results to practical application of crack assessment of aged cast stainless steels is discussed.
- Subjects
DUCTILITY; MECHANICAL properties of condensed matter; MECHANICAL behavior of materials; FRACTURE toughness; MECHANICAL strength of condensed matter
- Publication
Fatigue & Fracture of Engineering Materials & Structures, 2015, Vol 38, Issue 12, p1466
- ISSN
8756-758X
- Publication type
Article
- DOI
10.1111/ffe.12316