Behavior of Cr-rich phase during rapid solidification Cu71Cr29 alloys

被引：0
|
作者：
Zhou, Z. M. [1 ]
Tang, L. W. [2 ]
Luo, J. [1 ]
Zhou, T. [1 ,2 ]
Zhan, J. [1 ,2 ]
Peng, C. Y. [1 ,2 ]
Xia, H. [1 ,2 ]
Lei, B. B. [1 ]
机构：
[1] Chongqing Univ Technol, Sch Mat Sci & Engn, Chongqing 400054, Peoples R China
[2] Chongqing Res Ctr Mould Engn Technol, Chongqing 400054, Peoples R China
来源：
MACHINERY, MATERIALS SCIENCE AND ENGINEERING APPLICATIONS, PTS 1 AND 2 | 2011年 / 228-229卷
关键词：
Cu71Cr29; alloys; Rapid solidification; Liquid phase separation; Melt spinning; CU-CO ALLOYS; CONTACT MATERIALS; MICROSTRUCTURE;
D O I：
10.4028/www.scientific.net/AMR.226-228.101
中图分类号：
TP [自动化技术、计算机技术];
学科分类号：
0812 ;
摘要：
Behavior of Cr-rich phase in rapid solidification Cu71Cr29 alloys was investigated by using melt spinning and splat quenching. The microstructure and solidification behavior of the Cr-rich were investigated by scanning electron microscopy (SEM). The results showed that the alloys generally have a microstructure consisting of a fine dispersion of a Cr-rich phase in a Cu-rich matrix. However, the morphology and size of the Cr-rich phase vary greatly with the cooling rate. On the one hand, the average size of the Cr-rich phase is reduced with increasing cooling rate. On the other hand, the Cr-rich phase show both dendrites and spheroids for lower cooling rate but only spheroids for the higher cooling rate. This means liquid phase separation occurred during rapid solidification. The results were discussed with respect to the formation of the Cr-rich spheroids during rapid solidification.
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页码：101 / +
页数：2
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