Fabrication and Characteristics of Hypereutectic Prealloyed Al-Si Powders by Gas Atomization Process
The hypereutectic prealloyed Al-Si powders were prepared by gas atomization process. The microstructure and compacting ability of the atomized Al-Si powders were investigated. With increasing the gas pressure of the atomization, the average powder size and oxygen content were decreased. The size of primary eutectic Si particles in the as-atomized powders was about 8~10. As-atomized powders were hot-pressed into a cylindrical shape. Relative density of the hot-pressed samples was achieved about 96~99 % of theoretical density. Some properties of the samples were evaluated in this paper.
T. Ohji, T. Sekino and K. Niihara
Y. J. Kim et al., "Fabrication and Characteristics of Hypereutectic Prealloyed Al-Si Powders by Gas Atomization Process", Key Engineering Materials, Vols. 317-318, pp. 61-64, 2006