LIQUID LIQUID PHASE SEPARATION AND FORMA TION OF TWO GLASSY PHASES IN Zr-Ce-Co-Cu IMMISCIBLE ALLOYS

doi:10.11900/0412.1961.2016.00056

CORC > 金属研究所 > 中国科学院金属研究所

	LIQUID LIQUID PHASE SEPARATION AND FORMA TION OF TWO GLASSY PHASES IN Zr-Ce-Co-Cu IMMISCIBLE ALLOYS
	Wang Zhongyuan 1,2; He Jie 1; Yang Baijun 1; Jiang Hongxiang 1; Zhao Jiuzhou 1; Wang Tongmin 2; Hao Hongri 1
刊名	ACTA METALLURGICA SINICA
	2016-11-01
卷号	52 期号:11 页码:1379-1387
关键词	liquid-liquid phase separation Zr-Ce immiscible alloy rapid quenching two-glassy-phase alloy microstructure
ISSN号	0412-1961
DOI	10.11900/0412.1961.2016.00056
通讯作者	He Jie(jiehe@imr.ac.cn)
英文摘要	The liquid-liquid phase separation has been used recently to design two-glassy-phase alloys with desirable mechanical, magnetic and thermal properties. The occurrence of the liquid-liquid phase separation in the Zr-Ce binary immiscible alloys can lead to the formation of two coexistent crystalline Zr-rich and Ce-rich phases after complete solidification. In this work, a new quaternary complex alloy system (ZraCeb)((1-x))(CocCud)(x) was designed on the basis of the addition of metastable Co-Cu immiscible alloys in the stable Zr-Ce immiscible alloys. Distribrition ratio of Co and Cu in two coexistent liquids was calculated. The mechanisms of phase formation and microstructure evolution were investigated using OM, SEM, EDS, XRD and DTA. The results show that a single-phase homogeneous melt of (ZraCeb)((1-x))(CocCud)(x) alloys takes place the liquid-liquid phase separation during cooling through the miscibility gap. The metal elements Co and Cu are mainly concentrated in the Zr-rich and Ce-richliquids, respectively, which results in the formation of the two coexistent Zr-Co-rich and Ce-Cu-rich liquids. It was found that the coexistent Zr-Co-rich and Ce-Cu-rich liquids undergo liquid-to-glass transition and thus form dual glassy phases under the rapid quenching, respectively. The effects of the atomic ratio of Co and Cu, the addition amount and the cooling rate on the formation of the glassy phases have been discussed in detail by combining the experimental investigation with the thermodynamic analysis. A strategy for synthesizing liquid-phase-separated metallic glasses on the basis of suitably designed immiscible alloys has been proposed. Two-glassy-phase alloys can be obtained by rapidly quenching alloy melt in which the atomic ratio of Co and Cu and the addition amount are 4:1 and 38.5%, respectively.
资助项目	National Natural Science Foundation of China[51374194] ; National Natural Science Foundation of China[51574216] ; National Natural Science Foundation of China[51271185] ; Natural Science Foundation of Liaoning Province[2015020172]
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	SCIENCE PRESS
WOS记录号	WOS:000390080800003
资助机构	National Natural Science Foundation of China ; Natural Science Foundation of Liaoning Province
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/123460]
专题	金属研究所_中国科学院金属研究所
通讯作者	He Jie
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 2.Dalian Univ Technol, Sch Mat Sci & Engn, Dalian 116024, Peoples R China
推荐引用方式 GB/T 7714	Wang Zhongyuan,He Jie,Yang Baijun,et al. LIQUID LIQUID PHASE SEPARATION AND FORMA TION OF TWO GLASSY PHASES IN Zr-Ce-Co-Cu IMMISCIBLE ALLOYS[J]. ACTA METALLURGICA SINICA,2016,52(11):1379-1387.
APA	Wang Zhongyuan.,He Jie.,Yang Baijun.,Jiang Hongxiang.,Zhao Jiuzhou.,...&Hao Hongri.(2016).LIQUID LIQUID PHASE SEPARATION AND FORMA TION OF TWO GLASSY PHASES IN Zr-Ce-Co-Cu IMMISCIBLE ALLOYS.ACTA METALLURGICA SINICA,52(11),1379-1387.
MLA	Wang Zhongyuan,et al."LIQUID LIQUID PHASE SEPARATION AND FORMA TION OF TWO GLASSY PHASES IN Zr-Ce-Co-Cu IMMISCIBLE ALLOYS".ACTA METALLURGICA SINICA 52.11(2016):1379-1387.