期刊
SCRIPTA MATERIALIA
卷 63, 期 8, 页码 831-834出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.scriptamat.2010.06.028
关键词
Magnesium alloys; Precipitation hardening; Aging; Guinier-Preston zone
类别
资金
- Japan Society for the Promotion of Science, Japan
- CREST-JST
- [21360348]
- Grants-in-Aid for Scientific Research [21360348] Funding Source: KAKEN
We report the enhanced precipitation-hardening response of Mg-0.5Ca (wt.%) alloy by microalloying with Al. The peak hardness of 50 HV for the binary alloy was enhanced to 72 HV in a ternary Mg-0.5Ca-0.3Al alloy. Transmission electron microscopy and 3D atom probe analyses confirmed that the improvement in the peak hardness is associated with the dense precipitation of ordered monolayer Guinier-Preston zones and the subsequent formation of Al(2)Ca causes the over-aging. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
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