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.
| Original language | English |
|---|---|
| Pages (from-to) | 1466-1477 |
| Number of pages | 12 |
| Journal | Fatigue and Fracture of Engineering Materials and Structures |
| Volume | 38 |
| Issue number | 12 |
| DOIs | |
| Publication status | Published - 2015 Dec |
Keywords
- J-R curve prediction
- cast stainless steel CF8M
- finite element damage analysis
- multi-axial fracture strain locus
ASJC Scopus subject areas
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering