Eutectic nucleation in Al-25wt.% Si alloy through DSC

作     者：WU Yuying LIU Xiangfa JIANG Binggang HUANG Chuanzhen 

作者机构：Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials Ministry of Education Shandong University Jinan 250061 China School of Mechanical Engineering Shandong University Jinan 250061 China 

出 版 物：《Rare Metals》 (稀有金属（英文版）)

年 卷 期：2010年第29卷第1期

页      面：62-65页

核心收录：

学科分类：081702[工学-化学工艺] 08[工学] 0817[工学-化学工程与技术] 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：support from the Project of National Science Fund for Distinguished Young Scholars of China (No.50625101) the China Postdoctoral Science Foundation the Natural Science Foundation of Shan-dong Province, China (No.BS2009CL035) 

主　　题：aluminum alloys refinement differential scanning calorimeter eutectic silicon eutectic nucleation 

摘      要：Eutectic nucleation in hypereutectic Al-25wt.%Si alloy with the addition of P was studied by calculating the activation energy and nucleation work. The results indicate that P refinement, which can decrease the activation energy as well as nucleation work of eutectic solidification, can increase the eutectic nucleation frequency of Al-25wt.%Si alloy, so the addition of P can refme the eutectic structures of hypereutectic Al-Si alloys. According to the calculations, there is a certain relationship between the precipitation of primary silicon and eutectic solidification, and the eutectic nucleation mode is independent of morphology transition.