Lengthscale-dependent,elastically anisotropic,physically-based hcp crystal plasticity: Application to cold-dwell fatigue in Ti alloys |
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| Authors: | FPE Dunne D Rugg A Walker |
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| Institution: | 1. Department of Engineering Science, Oxford University, Parks Road, Oxford OX1 3PJ, England, United Kingdom;2. Rolls-Royce Plc, P.O. Box 31, Elton Road, Derby DE24 8BJ, England, United Kingdom |
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| Abstract: | A crystal plasticity model for hcp materials is presented which is based on dislocation glide and pinning. Slip is assumed to occur on basal and prismatic systems, and dislocation pinning through the generation of geometrically necessary dislocations (GNDs). Elastic anisotropy and, through the coupling of GNDs with slip rate, physically-based lengthscale effects are included. |
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| Keywords: | Crystal plasticity GNDs Cold-dwell fatigue Faceting Elastic anisotropy Lengthscale effects Hcp crystals |
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