标题：Heredity effect of modification efficiency for Al-Sr master alloy
作者：Bian, Xiufang ;Liu, Xiangfa ;Wang, Xiane ;Ma, Jiaji
作者机构： Shandong University of Technology, Ji'nan 250061, China; Colledge of Mat. Sci. and Eng., Shandong University of Technology, Ji'nan 250061, China
来源：Jinshu Xuebao/Acta Metallurgica Sinica
摘要：The Al-8.62% Sr master alloys with same composition but different microstructures have different modification efficiency for Al-Si alloy. When Al-Sr ingot, corresponding to 0.1%Sr in Al-Si alloy, or rapidly solidified Al-Sr sheet, coressponding to 0.05%Sr in Al-Si alloy, was added, the modification rating of the eutectic Al-11.8% Si alloy reaches class 5 at the condition of sand mold casting. At the permanent mold condition, by the addition of Al-Sr ingot, corresponding to 0.06%Sr in Al-Si alloy, or rapidly solidified Al-Sr sheet, corresponding to 0.03%Sr in Al-Si alloy, the modification rating of the Al-Si alloy reaches class 6. It has been shown that the difference of the modification rating is attributed to the structural heredity effect.