ABSTRACT In this paper, the liquid phase separation (LPS) of liquid immiscible Al75Bi9Sn16 alloy was investigated with calorimetric, thermal analysis and resistivity methods. Based on the fact that the resistivity depends on the composition of two separated liquid phases, the interface area between two separated liquid phases and the volumetric fraction of Sn–Bi-rich liquid x, the LPS can be divided into three stages: nucleation in the range from 1028 to 984 K; diffuse growth and Brownian coagulation in the range from 984 to 925 K; Marangoni migration, Stokes aggregation and coalescence in the range from 925 to 866 K. In addition, the Sn–Bi-rich@Al-rich core–shell structure was formed in Al75Bi9Sn16 alloy, resulting from the Marangoni migration. Based on the results in this study, an efficient method was developed to investigate the thermodynamics and kinetics of LPS of immiscible alloys.

中文翻译：

---

Al75Bi9Sn16不混溶合金的液相分离及核壳形貌

摘要 在本文中，采用量热法、热分析法和电阻率方法研究了液体不混溶 Al75Bi9Sn16 合金的液相分离 (LPS)。基于电阻率取决于两个分离液相的组成、两个分离液相之间的界面面积和富 Sn-Bi 液体的体积分数 x，LPS 可以分为三个阶段：范围从 1028 到 984 K；984 至 925 K 范围内的扩散生长和布朗凝固；Marangoni 迁移、斯托克斯聚集和聚结在 925 到 866 K 范围内。此外，由于 Marangoni 迁移，Al75Bi9Sn16 合金中形成了 Sn-Bi-rich@Al-rich 核壳结构。根据本研究的结果，