Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 706, Issue -, Pages 295-303Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.08.084
Keywords
Alloy effect; Twin growth; Twin transmission; Microstructure
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Funding
- U.S. Dept. of Energy, Office of Basic Energy Sciences [FWP 06SCPE401]
- National Science Foundation Designing Materials [CMMI-1729887, NSF CMMI-1729887]
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A spatially-resolved crystal plasticity Fast Fourier Transform (FFT)-based model is employed to study the effect of alloying addition on twin thickening and twin transmission in hexagonal close packed (HCP) magnesium. In the simulations, the influence of alloying additions is represented through the differences in the critical resolved shear stress (CRSS) of different slip and twinning modes. The results show that for the same grain orientation, twin type and boundary conditions, anisotropy in the CRSS values have a significant effect on twin thickening and twin transmission. Those with large differences in CRSS favor both twin thickening and twin transmission, and vice versa for those with small differences. However, less difference among the CRSS values enhances the dependence of thickening and transmission on the neighboring grain orientation.
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