Abstract
Based on dislocation theory, an anisotropic crystallographic constitutive relation has been developed for nickel-based single crystal superalloys. Octahedral {111}〈110〉, {111}〈112〉 and cubic {100}〈110〉 slip systems are considered. Drag stress and back stress state variables are used to model the local inelastic flow. Results are compared with test data for nickel-based crystal superalloy DD3 at 700°C and 950°C for evaluating the model parameters at these temperatures. The constitutive relation is applied to a finite element program for estimating the strength and life of a nickel-based single crystal turbine blade.
| Original language | English |
|---|---|
| Pages (from-to) | 139-145 |
| Number of pages | 7 |
| Journal | Theoretical and Applied Fracture Mechanics |
| Volume | 24 |
| Issue number | 2 |
| DOIs | |
| State | Published - Jan 1996 |
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