|About this Abstract
||2017 TMS Annual Meeting & Exhibition
||Additive Manufacturing: Building the Pathway towards Process and Material Qualification
||A-71: Recylability Study on a Gamma-TiAl Alloy for use in Electron Beam Melting Additive Manufacturing
||Peeyush Nandwana, Ryan R Dehoff, William H Peter
|On-Site Speaker (Planned)
gamma-TiAl based alloys are candidate high temperature materials, but have found limited use owing to their poor machinability. Owing to their poor machinability, these alloys are well suited for fabrication via additive manufacturing (AM) techniques. Laser based techniques cause cracking in gamma-TiAl components resulting from high residual stresses. Electron beam melting (EBM) is a more viable technqiue for fabrication of such alloy systems. However, since the processing is carried out under vacuum and at elevated temperatures, there is a higher tendency for loss of high vapor pressure elements like Al, and Cr. The present work focuses on a recyclability study wherein the powder will be subjected to the electron beam over multiple processing cycles to understand the change in feedstock chemistry over time. This study will establish a guideline for maximizing the use of powders while keeping the alloy chemistry and subsequently properties within the required specifications.
||Planned: Supplemental Proceedings volume