Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 691, Issue -, Pages 150-154Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2017.03.047
Keywords
Magnesium alloys; Grain orientation; Dynamic recrystallization; Twinning; Dislocation
Categories
Funding
- Australian Research Council
- Materials and Structures Research Cluster program at the University of Sydney's Faculty of Engineering IT
- National Natural Science Foundation of China [51471066]
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Strongly textured Mg-3Al-1Zn (wt%) alloy samples with a high density of twins cut from three directions were used to investigate the effect of crystallographic orientation on dynamic recrystallization (DRX). The samples were deformed under a high strain rate at 300 degrees C. The high strain rate allows rapid dislocation accumulation, making DRX possible at relatively low strain values. We demonstrate that crystallographic orientation and the initial twins have significant effects on DRX because of the different activities of dislocations and their interactions with twin boundaries. This research provides a potential pathway for improving the formability of Mg alloys.
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