标题：Eutectic nucleation in Al-25wt.%Si alloy through DSC
作者：Wu Yuying; Liu Xiangfa; Jiang Binggang; Huang Chuanzhen
作者机构：[Wu, Y] Key Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Shandong University, Ministry of Education, Jinan 250061, Ch 更多
通讯作者地址：[Wu, YY]Shandong Univ, Key Lab Liquid Solid Struct Evolut & Proc Mat, Minist Educ, Jinan 250061, Peoples R China.
关键词：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 refine 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 solidifica-tion, and the eutectic nucleation mode is independent of morphology transition.