|About this Abstract
||2018 TMS Annual Meeting & Exhibition
||Alloy Development and Powder Manufacture for Additive Manufacturing
||Ball Milling of Machine Chips as an Alternative Feedstock for Additive Manufacturing
||Jessica Bui, Parnian Kiani, Kaka Ma, Julie Schoenung
|On-Site Speaker (Planned)
Metal Additive Manufacturing (AM), the process of depositing material layer by layer, can be challenging because different feedstocks require their own set of parameters to achieve desired mechanical properties and microstructure. Gas atomized (GA) powder, which is spherical and has a normal particle size distribution, is used as the primary feedstock for laser-based AM. Because of the high cost of GA powder, it is necessary to introduce a more cost-effective feedstock. Machine chips, a byproduct of conventional manufacturing, can be processed with a ball mill into a powder. While this process results in powders with different particle size distributions and morphologies compared to GA powders, they can be used as a feedstock. Milling parameters determine properties of the powder and will ultimately affect final build properties such as surface roughness and porosity. Particle size distribution, morphology, and cross sections of the processed powder have been investigated in this study.
||Planned: Supplemental Proceedings volume