Strain-controlled iso-thermal fatigue behavior of Co–29Cr–6Mo used for tooling materials in Al die casting

• Published in: Materials Science and Engineering: A Vol. 703; pp. 27 - 36
• Main Authors: Tunthawiroon, Phacharaphon, Li, Yunping, Koizumi, Yuichiro, Chiba, Akihiko
• Format: Journal Article
• Language: English; Japanese
• Published: Lausanne Elsevier B.V 04.08.2017; Elsevier BV
• Subjects: Chromium; Co-Cr-Mo alloy; Cobalt base alloys; Crack initiation; Die cast; Die casting; Dies; Fatigue cracks; Fatigue life; Fatigue tests; Fracture mechanics; Grain boundaries; High temperature; Metal fatigue; Molybdenum; Nucleation; Oxidation; Strain; Thermal fatigue; Tooling; Thermal fatigue; Oxidation; Co-Cr-Mo alloy; Die cast

Iso–thermal (IF) fatigue behavior of a singleε-phase Co–Cr–Mo alloy used as Al die casting mold is investigated in details at temperatures of 400, 500, 600, and 700°C and applied mechanical strains of 0.1%, 0.2%, 0.3% and 0.4%. The results indicate that for a given applied mechanical strain, higher...