Semi Continuous Preparation of Rapidly Solidified Al-Ti-B Powder

Author of the article:QI Minjie

Author's Workplace：Microscopic Vision Metal Lab, Baoji Zhengwei Metal Technology Co., Ltd., Baoji 721000, China

Key Words：Al-Ti-B alloy; AlTiB; rapid solidification; grain refinement

Abstract：Al-Ti-B alloy is a commonly used grain refiner for aluminum alloy. The grain refining ability can be improved by gas atomization and rapid solidification. The rapid solidification Al-Ti-B powder was produced by using high pressure argon semi-continuous atomization through the modification of self-developed small gas atomization device and adding a semi-continuous feeding device suitable for Al-Ti-B powder. The results show that the proportion of the products below 178 μm is 90%, there is no obvious Al-Ti phase, no agglomeration of TiB, and the macroscopic contents of Ti and B have no obvious changes compared with the raw materials