|About this Abstract
||2019 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Fatigue and Fracture III
||The Effects of Powder Recycling on the Mechanical Properties of Additively Manufactured Materials
||Arash Soltani-Tehrani, Jonathan W. Pegues, Jaikp Mallory, John Robertson, Ramesh Ramakrishnan, Mohsen Seifi, Nima Shamsaei
|On-Site Speaker (Planned)
As interest in additive manufacturing continues to rise, various industrial sectors are striving to quickly adopt this advanced technology. For laser powder bed fusion processes, the high volume of powder feedstock required to fabricate parts in conjunction with the high cost of metal powders results in the need to recycle previously used powder. The effects of this “powder recycling” on the inherent powder characteristics and the subsequent structural integrity of the fabricated parts is unknown and therefor requires immediate attention. This study measures the rheological properties and other characteristics of continuously recycled metallic powder feedstock. The tensile and fatigue properties are determined for the various stages of recycled powder feedstock, 0 to 21 recycled iterations, with an emphasis placed on the microstructural and other structural characteristics, such as defect distribution and surface roughness. These properties are then related to the powder characteristics as determined through the rheology measurements.
||Planned: Supplemental Proceedings volume