Journal
SCRIPTA MATERIALIA
Volume 63, Issue 7, Pages 698-703Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.02.005
Keywords
Magnesium alloys; Creep; Rare earth; Precipitation; Solid solution
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Funding
- Australian Government's Cooperative Research Centres (CRC)
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Die-cast Mg-La, Mg-Ce and Mg-Nd binary alloys varying in composition have been used to investigate creep resistance and its relation to microstructure. The remarkable differences in creep resistance observed in these alloys are shown to be related to different levels of rare earth (RE) solute supersaturated in the alpha-Mg matrix. The results seem to suggest that strengthening of the alpha-Mg matrix by solid solution and/or precipitation is more important than grain boundary reinforcement by intermetallic phases for the creep resistance of Mg-RE alloys. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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