Grain refinement of hypoeutectic Al-Si alloy prepared with ELTA by Al-4B master alloy

• Published in: Transactions of Nonferrous Metals Society of China Vol. 16; no. A03; pp. 1342 - 1345
• Main Author: 王明星 孟祥永 刘志勇 刘忠侠 翁永刚 宋天福 杨升
• Format: Journal Article
• Language: English
• Published: Department of Physics, Laboratory of Materials Physics of Ministry of Education, Zhengzhou University, Zhengzhou 450052, China 01.12.2006
• Subjects: 亚共晶体; 有色金属; 电解作用; 铝合金; grain refining; electrolytic low-titanium aluminum (ELTA); hypoeutectic Al-Si alloy
• ISSN: 1003-6326

Electrolytic low-titanium aluminum （ELTA） was produced by adding TiO2 powder to an industrial aluminum electrolyzer. The grain refining effect of Al-4B master alloy in the hypoeutectic Al-Si alloy prepared by using ELTA was investigated, and compared with those of Al-STi, Al-STi-IB and Al-4B master alloys in the similar alloy prepared by using pure Al. The results indicate that when Al-4B is added to the melt of the alloy prepared by using ELTA in terms of the Ti/B mass ratio of S：l, the grain refining effect is better than those ofAl-STi, Al-STi-IB and Al-4B master alloys. Thus, using Al-4B to refine the grain of Al-Si alloys prepared by using ELTA will possibly become a feasible way of obtaining Al-Si alloy with homogeneous and fine microstructure.