Glass formation and crystallization behavior in Mg65Cu25Y10-xGdx (x=0, 5 and 10) alloys

被引：51
|
作者：
Men, H
Kim, WT
Kim, DH
机构：
[1] Yonsei Univ, Ctr Non Crystalline Mat, Dept Met Engn, Seoul 120749, South Korea
[2] Chongju Univ, Ctr Non Crystalline Mat, Dept Phys, Chonju 360764, South Korea
来源：
JOURNAL OF NON-CRYSTALLINE SOLIDS | 2004年 / 337卷 / 01期
关键词：
D O I：
10.1016/j.jnoncrysol.2004.03.110
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The glass forming ability and crystallization behavior of Mg65Cu25Y10-xGdx (x = 0, 5 and 10) alloys have been investigated. The glass forming ability (GFA) is significantly improved when Y in Mg65Cu25Y10 is substituted with Gd. Ternary Mg65Cu25Gd10 bulk metallic glass (BMG) with diameter of at least 8 mm was successfully fabricated by conventional Cu-mold casting method in air atmosphere. Mg-2(Y, Gd) is the first competing crystalline phase against the glass formation in the Mg65Cu25Y10-xGdx (x = 0, 5) alloys, while Mg2Cu and Cu2Gd are the competing crystalline phases in the Mg65Cu25Gd10 alloy. Therefore, the suppression of the formation of Mg-2(Y, Gd) during cooling from the liquid improves the GFA significantly. (C) 2004 Elsevier B.V. All rights reserved.
引用
收藏
页码：29 / 35
页数：7
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