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

页码：333 / 339

页数：7

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