Journal
SCRIPTA MATERIALIA
Volume 150, Issue -, Pages 87-91Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2018.03.005
Keywords
Twinning; Dynamic impact loading; Finite element analysis; EBSD; Magnesium alloy
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Funding
- National Basic Research Program of China [2013CB632200]
- National Natural Science Foundation of China [51574291]
- Fundamental Research Funds of Central South University [502221707]
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Twinning-stress correlation of a basal textured Mg-Al-Zn alloy was studied after impact test. The deformed microstructure was characterized using electron backscattered diffraction (EBSD) while the stress analysis during impact process was modeled by finite element method. Results showed that both the tension and compression region of the sample were dominated by high density deformation twins. Various twinning modes and variant selections were determined by trace method and misorientation analysis. Preliminary analysis suggested that some rare twinning modes such as {10(1)over-bar1}-{10(1)over-bar1} and {10(1)over-bar2}-{10(1)over-bar2} double twinning likely occurred after deformation. (C) 2018 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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