A constitutive model of twin nucleation, propagation and growth in magnesium crystals

A new constitutive model to describe twin nucleation, propagation and growth for magnesium crystals is developed and implemented in the recently developed Elastic Viscoplastic Self-Consistent polycrystal model. The new model explicitly takes into account the stress relaxation associated with twin nu...

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Bibliographic Details
Published in:Materials science & engineering. A, Structural materials : properties, microstructure and processing Structural materials : properties, microstructure and processing, 2015-02, Vol.625, p.140-145
Main Authors: Wu, P.D., Guo, X.Q., Qiao, H., Lloyd, D.J.
Format: Article
Language:English
Subjects:
Constitutive relationships
Crystal plasticity
Crystals
Hardening
Magnesium
Magnesium alloys
Mathematical models
Microstructure
Nucleation
Stress relaxation
Structural materials
Twinning
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Summary:A new constitutive model to describe twin nucleation, propagation and growth for magnesium crystals is developed and implemented in the recently developed Elastic Viscoplastic Self-Consistent polycrystal model. The new model explicitly takes into account the stress relaxation associated with twin nucleation. It is demonstrated that the new twinning model is able to capture key macroscopic features associated with twin nucleation, propagation and growth observed experimentally.
ISSN:0921-5093
1873-4936
DOI:10.1016/j.msea.2014.11.096