Solidification behaviour of silver-copper alloys in a drop tube

被引：10
|
作者：
Wang, N [1 ]
Cao, CD [1 ]
Wei, B [1 ]
机构：
[1] Northwestern Polytech Univ, Dept Appl Phys, Xian 710072, Peoples R China
来源：
GRAVITATIONAL EFFECTS IN MATERIALS AND FLUID SCIENCES | 1999年 / 24卷 / 10期
基金：
中国国家自然科学基金;
关键词：
D O I：
10.1016/S0273-1177(99)00729-2
中图分类号：
V [航空、航天];
学科分类号：
08 ; 0825 ;
摘要：
Ag-15wt%Cu hypoeutectic and Ag-28.1wt%Cu eutectic alloys were solidified in a containerless environment using a 3m drop tube. It is found that for Ag-15wt%Cu hypoeutectic alloy, with the decreasing of the droplet size, a "dendritic-equiaxed" morphology transition takes place. Meanwhile, for Ag-28.1wt%Cu eutectic alloy, a "regular lamellar eutectic-irregular anomalous eutectic" microstructure change occurs. The dendrite fragmentation mechanism and TMK model of eutectic growth were used to analyze the experimental results. (C) 1999 COSPAR. Published by Elsevier Science Ltd.
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页码：1257 / 1261
页数：5
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