Liquid-liquid phase separation and solidification behavior of Al-Bi-Sn monotectic alloy

被引：23
作者：
Wang, Lin [1 ]
Li, Shanshan [1 ]
Bo, Lin [1 ]
Wu, Di [1 ]
Zhao, Degang [1 ]
机构：
[1] Univ Jinan, Sch Mat Sci & Engn, Jinan 250022, Shandong, Peoples R China
来源：
JOURNAL OF MOLECULAR LIQUIDS | 2018年 / 254卷
关键词：
Al-Bi-Sn monotectic alloy; Solidified structure; Resistivity; Liquid-liquid phase separation; Core-shell structure; IMMISCIBLE ALLOY; MISCIBILITY GAP; MICROSTRUCTURE;
D O I：
10.1016/j.molliq.2018.01.118
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
In this study, the liquid-liquid phase separation of four kinds of Al-Bi-Sn immiscible melts and the formation mechanism of core-shell structure were studied using electrical resistivity and thermodynamics method. The thermodynamic characteristics and micromorphology were analyzed by DSC, XRD, SEM and EDS. The resistivity results showed that the non-linear change of rho-T curve above the monotectic reaction temperature reveals the occurrence of liquid-liquid phase separation. Solidification microstructure and the core-shell structure of Al-BiSn immiscible alloy can be controlled by adjusting the composition of alloy. The core/shell structure of Al-rich phase/Sn-Bi-rich phase can be obtained in the Al60Bi24Sn16 alloy cast in the copper mold. (C) 2018 Elsevier B.V. All rights reserved.
引用
收藏
页码：333 / 339
页数：7
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