| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 802699 | Mechanics of Materials | 2015 | 5 Pages |
•Analytical solutions are presented for Coble creep under biaxial loading conditions.•The solutions satisfy both grain continuity and stress boundary conditions.•Solutions reveal a strong dependence of the creep rate on the biaxial stress ratio.•Result is suitable for finite creep strain and convenient for practical application.
Analytical solutions are developed for Coble creep in polycrystalline materials under biaxial loading. The driving force for grain boundary diffusion is the normal stress acting on the grain boundary. The solutions satisfy both grain continuity and stress boundary conditions, and track the whole deformation procedure of the hexagonal grains in polycrystalline materials under biaxial loading. The solutions reveal a strong dependence of creep rate on the biaxial stress ratio. The special advantages of the present solution lie in its suitability for Coble creep analysis of engineering structures. After stress analysis for considered structure, one may find out the position where the fastest creep happen in a stressed structure, and its creep rate and direction at any time can also be predicted by present solutions.
