On the effect of Al on the formation of amorphous Mg-Al-Cu-Y alloys

被引：0

作者：

Ohnuma, M ^{[1
]}

Linderoth, S ^{[1
]}

Pryds, N ^{[1
]}

Eldrup, M ^{[1
]}

Pedersen, AS ^{[1
]}

机构：

[1] Riso Natl Lab, Dept Mat Res, DK-4000 Roskilde, Denmark

来源：

BULK METALLIC GLASSES | 1999年 / 554卷

关键词：

D O I：

暂无

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 bulk amorphous alloy (Mg1-xAlx)(60)Cu30Y10 has been studied, in particular the influence of Al concentration on the glass forming ability and on the various transition temperatures. The amorphous single phase has been obtained for x up to 0.07 by casting into a wedge-shaped copper mold. The amorphous alloys were investigated by differential scannning calorimetry (DSC). All the specimens with x = 0 - 0.07 show a clear glass transition. The crystallization temperature decreases with increasing Al concentration, while the temperatures of the glass transition, melting and solidification change only slightly. The DSC measurements show that for Al contents below 0.05 the first exothermic peak which corresponds to crystallization, consists of two overlapping peaks. To clarify the origin of the splitting of the first exothermic peak, the crystallization process of Mg60Cu30Y10 alloy has also been studied by x-ray diffraction.

引用

页码：119 / 124

页数：6

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