TEM studies of devitrification products in Al-Gd-Ni-(Fe) alloys.

被引：0
|
作者：
Vasiliev, AL [1 ]
Aindow, M [1 ]
Blackburn, MJ [1 ]
Watson, TJ [1 ]
机构：
[1] Univ Connecticut, Inst Mat Sci, Dept Met & Mat Engn, Storrs, CT 06269 USA
来源：
AMORPHOUS AND NANOCRYSTALLINE METALS | 2004年 / 806卷
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中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Metallic glasses can form in certain Al-Gd-Ni alloys. Devitrificaion occurs on subsequent beating to intermediate temperatures and although some phases from as expected the crystal structures of others are less certain. This paper presents a summary of transmission electron microscopy (TEM) data acquired from four devitrified Al-Gd-Ni(-Fe) alloys. It is shown that the alloys exhibit nanocrystalline microstructures consisting of face-centered-cubic alpha-Al, binary Al3Gd, and ternary phases. An Al-(Gd,Fe)-Ni phase forms as rods and exhibits the orthorhombic Al19Ni5Gd3 structure. Plates of the rhombohedral phase Al-23(Ni,Fe)(6)Gd-4 are also present. Complex faulting is observed in both ternary phases.
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页码：45 / 50
页数：6
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