|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing of Metals: Establishing Location-Specific Processing-Microstructure-Property Relationships
||A-20: Effects of Recycled Powder on Build Integrity in Metal Based Additive Manufacturing
||Katherine Terrassa, Nancy Y.C. Yang, Julie M. Schoenung
|On-Site Speaker (Planned)
Metal based additive manufacturing has struggled to become a widely utilized process partially due to the need to improve the economic impact of these techniques. For direct laser deposition, 90% of feedstock powder is unused. The convention is often for this powder to be discarded to prevent negative effects on build quality if reused due to the possible morphological and microstructural changes in the powder resulting from interactions with the laser. However, recent studies have shown that the morphology of the powder can be maintained for multiple deposition cycles if properly processed. In this study, 316L stainless steel powder is used as feedstock in a Laser Engineered Net Shaping (LENS) machine. The effects of the recycled powder, including the particle morphology, agglomeration, composition and microstructure, on the quality of the build are investigated through scanning electron microscopy, particle size analysis, and mechanical testing.
||Planned: Supplemental Proceedings volume