Journal
SCRIPTA MATERIALIA
Volume 208, Issue -, Pages -Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2021.114322
Keywords
Mg alloys; Crystallographic texture; Deformation mechanisms; Slip systems; VPSC model
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This work investigates the deformation mechanisms active during high temperature plane strain compression and their impact on the microstructural and texture evolution of an Mg-Zn-Ca-Zr (ZXK) alloy. The study found that the activity of non-basal dislocations and specific slip systems play a crucial role in the formation of texture components in the alloy.
This work investigates the deformation mechanisms active during high temperature plane strain com-pression and their impact on the microstructural and texture evolution of an Mg-Zn-Ca-Zr (ZXK) alloy. The microstructures of samples deformed at different strains and different loading directions were ex-amined using electron backscatter diffraction measurements. Likely activated slip systems in grains and twins were determined by in-grain misorientation axis (IGMA), and their activity was compared to the simulation results using the Viscoplastic Self-Consistent (VPSC) model. The importance of the active de-formation modes on texture development, specifically the formation of particular texture components, has been linked with a profuse activity of non-basal < a > dislocations and the preferential activation of pyramidal I < c + a > slip over pyramidal II < c + a > slip. Along with prismatic < a > slip, the activation of { 10 1 over line 2 } twins and pyramidal < a > slip seems to be pivotal for the stabilization of the so-called TD-texture component in a specific loading configuration. (c) 2021 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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