期刊
MATERIALS CHEMISTRY AND PHYSICS
卷 117, 期 1, 页码 107-112出版社
ELSEVIER SCIENCE SA
DOI: 10.1016/j.matchemphys.2009.05.015
关键词
Magnesium alloys; Age hardening; Mg-Y-Gd-Zn-Zr
资金
- Hi-Tech Research and Development Program of China [2006AA03Z520]
- Chinese Academy of Sciences
- Jilin Province
- Baikov Institute of Metallurgy and Materials Science
- Russian Academy of Sciences, Moscow
The ageing behavior of an extruded Mg-7Y-4Gd-0.5Zn-0.4Zr alloy during ageing at 250 degrees C has been investigated. Two types of phases have been observed during the ageing process. One is a lamellar phase with a 14H long periodic stacking structure, the other is the beta' phase with an ellipsoidal morphology. The increased mechanical properties of the peak-aged alloy are mainly ascribed to the presence of both of these phases at peak hardness. (C) 2009 Elsevier B.V. All rights reserved.
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