期刊
JOURNAL OF ALLOYS AND COMPOUNDS
卷 623, 期 -, 页码 15-23出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.jallcom.2014.10.096
关键词
Cast magnesium alloy; Texture; Aluminum effect; Twinning
资金
- Natural Sciences and Engineering Research Council of Canada (NSERC)
- AUTO21 Network of Centers of Excellence
- Premier's Research Excellence Award (PREA)
- NSERC-Discovery Accelerator Supplement (DAS) Award
- Automotive Partnership Canada (APC)
- Canada Foundation for Innovation (CFI)
- Ryerson Research Chair (RRC) program
The purpose of this study was to identify the effect of aluminum content on the twinning and texture evolution of cast magnesium alloys during compression. As-cast AZ31, AZ61, and AZ91D magnesium alloys exhibited basically a random orientation. Compressive deformation resulted in the formation of {(1) over bar2 (1) over bar0} [0001] and {01 (1) over bar0} [0001] texture components, indicating that the c-axes of hcp unit cells in most grains were rotated toward the anti-compression direction due to the occurrence of extension twinning. The intensity of the texture components increased with increasing compressive strain. The presence of a higher amount of beta-Mg17Al12 precipitates arising from more Al content in alloy AZ91D hindered the formation and growth of twins which led to the weakening of deformation texture of the high Al-containing magnesium alloy at higher compressive strains. (C) 2014 Elsevier B.V. All rights reserved.
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