| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 1623669 | Journal of Alloys and Compounds | 2009 | 6 Pages |
Abstract
Microstructure evolution of Mg-10Gd-3Y-1.2Zn-0.4Zr alloy during high temperature heat-treatment at 773Â K in the time range 12-72Â h is investigated. Addition of 1.2% Zn increases the amount of Mg5(Gd,Y,Zn) eutectic compounds and form of basal plane stacking faults (SF) of Mg crystal in the as-cast alloy. During heat-treatment at 773Â K, parts of eutectic compounds dissolve gradually into the matrix with time prolonged, a new 14H type of LPSO and fcc structured cuboid-shaped RE-rich phases come into being. Two kinds of morphologies of these 14H LPSO phases: block-shaped and fine lamellar-shaped are generated through transformation from Mg5(Gd,Y,Zn) eutectic compounds by heat treatment control.
Keywords
Related Topics
Physical Sciences and Engineering
Materials Science
Metals and Alloys
Authors
D.J. Li, X.Q. Zeng, J. Dong, C.Q. Zhai, W.J. Ding,