Eutectic nucleation in Al-25wt.% Si alloy through DSC
来源期刊：Rare Metals2010年第1期
论文作者：WU Yuyinga, b, LIU Xiangfaa, JIANG Bingganga, and HUANG Chuanzhenb aKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan , China bSchool of Mechanical Engineering, Shandong University, Jinan , China
文章页码：62 - 65
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 solidification, and the eutectic nucleation mode is independent of morphology transition.
WU Yuyinga, b, LIU Xiangfaa, JIANG Bingganga, and HUANG Chuanzhenb aKey Laboratory for Liquid-Solid Structural Evolution and Processing of Materials, Ministry of Education, Shandong University, Jinan 250061, China bSchool of Mechanical Engineering, Shandong University, Jinan 250061, China
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 solidification, and the eutectic nucleation mode is independent of morphology transition.
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