Experimental determination and thermodynamic modeling of phase equilibria in the Cu-Cr system

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	Experimental determination and thermodynamic modeling of phase equilibria in the Cu-Cr system
	Z. M. Zhou; J. Gao; F. Li; Y. P. Wang; M. Kolbe
	2011
发表期刊	Journal of Materials Science
ISSN	0022-2461
卷号	46 期号:21 页码:7039-7045
摘要	Liquidus temperatures in the Cu-Cr system at compositions of 10.0-72.7 at.% Cr were determined using electromagnetic levitation melting. The present data agree with the prediction of a recent thermodynamic study of the system for compositions up to 20.0 at.% Cr. However, they show large and positive deviations for other compositions. Microscopic studies reveal that compositions between 10.0 and 50.5 at.% Cr solidified into a dendritic microstructure, whereas those between 55.9 and 72.7 at.% Cr solidified into a droplet-shaped microstructure. The microstructure of the latter type provides direct evidence for the existence of a stable miscibility gap over Cr-rich compositions. Phase equilibria in the Cu-Cr system were calculated using the CALPHAD method. A novel phase diagram was proposed for the Cu-Cr system, which shows a monotectic reaction between compositions of 50.8 and 83.2 at.% Cr at an invariant temperature of 2020 +/- 22 K. The novel phase diagram has reduced the discrepancies between the literature data.
部门归属	[zhou, z. m.; gao, j.; li, f.] northeastern univ, minist educ, key lab elect proc mat, shenyang 110004, peoples r china. [zhou, z. m.; wang, y. p.] chinese acad sci, inst met res, shenyang 110016, peoples r china. [wang, y. p.] xi an jiao tong univ, sch sci, xian 710049, peoples r china. [kolbe, m.] deutsch zentrum luft & raumfahrt dlr, inst mat phys weltraum, d-51170 cologne, germany.;gao, j (reprint author), northeastern univ, minist educ, key lab elect proc mat, shenyang 110004, peoples r china;jgao@mail.neu.edu.cn
关键词	Liquidus Temperatures Nb Alloys Chromium
URL	查看原文
WOS记录号	WOS:000293757000035
引用统计	被引频次：21[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/321006/30991
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	Z. M. Zhou,J. Gao,F. Li,et al. Experimental determination and thermodynamic modeling of phase equilibria in the Cu-Cr system[J]. Journal of Materials Science,2011,46(21):7039-7045.
APA	Z. M. Zhou,J. Gao,F. Li,Y. P. Wang,&M. Kolbe.(2011).Experimental determination and thermodynamic modeling of phase equilibria in the Cu-Cr system.Journal of Materials Science,46(21),7039-7045.
MLA	Z. M. Zhou,et al."Experimental determination and thermodynamic modeling of phase equilibria in the Cu-Cr system".Journal of Materials Science 46.21(2011):7039-7045.