A Unified Theoretical and Practical Approach to Creep and Creep Fracture

摘要

The θ methodology is shown to extend rather than conflict with the approaches now widely used to analyze creep property sets. In this way, variations in the shapes of normal creep curves are related directly to the deformation and damage processes governing the behavior patterns observed for three precipitation-hardened aluminum alloys, 2124, 2419 and 8090. Within this unified framework, the θ relationships introduce equations which rationalize creep rate and rupture life data through yield stress or UTS measurements at the creep temperatures, without recourse to the empirical terms involved with conventional parametric methods.