| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Processing Effects on Microstructure and Material Performance
|
| Presentation Title |
Microstructural Development in Additively Manufactured and Heat Treated IN625 |
| Author(s) |
Holden Hyer, Ryan Newell, Daniel Matejczyk, Sinsar Hsie, Mason Anthony, Le Zhou, Catherine Kammerer, Yongho Sohn |
| On-Site Speaker (Planned) |
Holden Hyer |
| Abstract Scope |
Laser powder bed fusion (LPBF) has been demonstrated to produce dense, complex parts from IN625 powder feedstock. As built microstructures include a cellular-solidification sub-structure with ~1 micron cell diameters and cell walls that may or may not contain carbides and Laves AB2 phases. The cellular structure and presences or absence of second phase particles affect subsequent heat treatment. In this study, IN625 components were manufactured via LPBF and heat-treated that consisted of stress-relief, hot isostatic press and anneal. The microstructure was examined with optical, scanning electron, and transmission electron microscopy techniques. Changes in phase constituents and microstructure were documented as a function of heat treatment and component geometry (i.e., solidification and/or heat transfer characteristics). Results will be discussed with respect to the process-microstructure relationship in LPBF-manufactured IN625. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |