Observation of Bi Coarsening and Dissolution Behaviors in Melting Al–Bi Immiscible Alloy

作     者：Wen-Quan Lu Shu-Guang Zhang Jian-Guo Li 

作者机构：School of Materials Science and Engineering Shanghai Jiao Tong University School of Environmental Science and Engineering Shanghai Jiao Tong University 

出 版 物：《Acta Metallurgica Sinica(English Letters)》 (金属学报（英文版）)

年 卷 期：2016年第29卷第9期

页      面：800-803页

核心收录：

学科分类：08[工学] 080502[工学-材料学] 0805[工学-材料科学与工程（可授工学、理学学位）] 

基　　金：supported by the National Natural Science Foundation of China (Nos. 51374144, 51271119 and 51574165) Shanghai Municipal Natural Science Foundation (13ZR1420600) Shanghai Rising-Star Program (14QA1402300) 

主　　题：Immiscible alloy Coarsening Dissolution Synchrotron radiography 

摘      要：Using synchrotron radiography, a melting process of the AI-10 wt% Bi immiscible alloy was fully observed, and Bi solute coarsening and dissolution behaviors as well as their effect on the microstructural evolution were also investi- gated. We found that two different steps including coarsening and dissolution processes can be used to describe the structure evolution in melting AI-10 wt% Bi immiscible alloy. And diffusion coalescence controlled the coalescence of Bi droplets at the early stage of the melting AI-10 wt% Bi immiscible alloy, while the coagulation dttring movement did at later stage. Also, the larger the droplet, the larger the distance of the steady-state concentration distribution around the droplet.