Journal
PHILOSOPHICAL MAGAZINE
Volume 90, Issue 5, Pages 567-583Publisher
TAYLOR & FRANCIS LTD
DOI: 10.1080/14786430903213320
Keywords
constitutive equations; creep; micromechanics; plasticity of crystals; texture
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Funding
- Nuclear Energy Advanced Modeling and Simulation (NEAMS) (USA) [LA0915010909]
- [ANR-08-BLAN-00238-02]
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This paper presents a crystallographically-based constitutive model of a single crystal deforming by climb and glide. The proposed constitutive law is an extension of the rate-sensitivity approach for single crystal plasticity by dislocation glide. Based on this description at single crystal level, a homogenization-based polycrystal model for aggregates deforming in a climb-controlled thermal creep regime is developed. To illustrate the capabilities of the proposed model, we present calculations of effective behavior of olivine and texture evolution of aluminum at warm temperature and low strain rate. In both cases, the addition of climb as a complementary single-crystal deformation mechanism improves the polycrystal model predictions.
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