Phase separation in undercooled Cu-Cr melts

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	Phase separation in undercooled Cu-Cr melts
	J. Gao; Y. P. Wang; Z. M. Zhou; M. Kolbe
	2007
发表期刊	Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing
ISSN	0921-5093
卷号	449 页码:654-657
摘要	Phase separation in undercooled Cu-25 wt.% Cr melts was investigated using the electromagnetic levitation technique in combination with splat-quenching. The solidification microstructure of the levitated and splat-quenched samples showed many Cr-rich spheres in a Cu-rich matrix in addition to fine Cr-rich dendrites. The Cr-rich dendrites nucleated preferentially on the surface of the Cr-rich spheres, and grew outwards. Such a microstructure shows clear evidence of metastable liquid phase separation in undercooled Cu-Cr melts. In the levitated samples without splat-quenching, however, a dendritic microstructure was observed showing no evidence of liquid phase separation. The results are discussed in terms of a newly established phase diagram based on thermodynamic calculations. (c) 2006 Elsevier B.V. All rights reserved.
部门归属	ne univ, key lab electromagnet proc mat, shenyang 110004, peoples r china. chinese acad sci, natl lab mat sci, inst met res, shenyang 110016, peoples r china. german aerosp ctr dlr, inst space simulat, d-51170 cologne, germany.;gao, j (reprint author), ne univ, key lab electromagnet proc mat, 3-11 wenhua rd, shenyang 110004, peoples r china;jgao@mail.neu.edu.cn
关键词	Cu-cr Alloys Electromagnetic Levitation Undercooling Liquid Phase Separation Alloys Microstructures
URL	查看原文
WOS记录号	WOS:000245477800149
引用统计	被引频次：33[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/33549
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	J. Gao,Y. P. Wang,Z. M. Zhou,et al. Phase separation in undercooled Cu-Cr melts[J]. Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,2007,449:654-657.
APA	J. Gao,Y. P. Wang,Z. M. Zhou,&M. Kolbe.(2007).Phase separation in undercooled Cu-Cr melts.Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing,449,654-657.
MLA	J. Gao,et al."Phase separation in undercooled Cu-Cr melts".Materials Science and Engineering a-Structural Materials Properties Microstructure and Processing 449(2007):654-657.