CREEP-RUPTURE IN A NICKEL-BASED SUPERALLOY
Smooth bar creep rupture tests were conducted under constant loads at 1033 and 1144 K using RENE 80. Creep deformation occurred dominantly by the dislocation creep mechanism, but creep rupture proceeded by the continual nucleation and growth of cavities. Rupture times were well predicted by the constrained diffusive growth model of Riedel, particularly at low applied stresses, but their temperature dependence and the Monkman-Grant product were better related to the unconstrained diffusive growth models. Interruption tests showed development of microcracks in the tertiary stage of creep and sometimes revealed edge cracks, the growth of which provided the creep crack growth rate.
- Publisher
- MINERALS METALS MATERIALS SOC
- Issue Date
- 1992-09
- Language
- English
- Article Type
- Article; Proceedings Paper
- Keywords
RANDOMLY DISTRIBUTED CAVITIES; DIFFUSIVE CAVITATION; NUCLEATION; FRACTURE; GROWTH
- Citation
METALLURGICAL TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, v.23, no.9, pp.2581 - 2587
- ISSN
- 0360-2133
- Appears in Collection
- MS-Journal Papers(저널논문)
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- There are no files associated with this item.
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