Direct crystallization of the peritectic Nd2Fe14B1 phase by undercooling of the melt

被引：9
|
作者：
Volkmann, T [1 ]
Gao, J
Strohmenger, J
Herlach, DM
机构：
[1] DLR, Inst Space Simulat, D-51170 Cologne, Germany
[2] Northwestern Polytech Univ, Dept Appl Phys, Xian 710072, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2004年 / 375卷
关键词：
rare-earth magnetic alloys; undercooling of melts; containerless processing; metastable phases;
D O I：
10.1016/j.msea.2003.10.208
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Phase selection in undercooled Nd-Fe-B alloy melts has been investigated by electromagnetic levitation experiments with respect to the competitive formation of the peritectic Nd2Fe14B1 phase (phi-phase) and the properitectic gamma-Fe solid solution. It is shown that primary solidification of stable gamma-Fe is suppressed in favour of the direct crystallization of the peritectic Nd2Fe14B1 intermetallic compound with increasing undercooling. Besides the primary phi-phase, another solidification route of the undercooled melt resulting in a metastable phase is found in a wide range of alloy compositions. (C) 2003 Elsevier B.V. All rights reserved.
引用
收藏
页码：1153 / 1156
页数：4
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