| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials in Energy Environments II
|
| Presentation Title |
Accelerating the Evaluation of Creep Properties in Laser Powder Bed Fusion Processed Haynes 230 and Inconel 738 |
| Author(s) |
Daniel McConville, Ben Rafferty, Stan Baldwin, Kevin Eckes, Jeremy Iten, Amy Clarke, Jonah Klemm-Toole |
| On-Site Speaker (Planned) |
Daniel McConville |
| Abstract Scope |
Haynes 230 and Inconel 738 are of interest for use in power generation applications where additive manufacturing (AM) offers the opportunity to improve efficiency by enabling more complex component designs. Little data has been published on the creep performance of these alloys (particularly Haynes 230) as manufactured with PBF-LB AM, partly due to each exhibiting solidification cracking, but conventional creep testing is also very time consuming. In this study, we explore stress relaxation testing on crack-free, modified versions of each alloy as an accelerated method to evaluate creep rates over a wide range of stresses, enabling higher throughput creep data generation. Important parameters that influence the correspondence between creep rates determined from stress relaxation testing and conventional creep testing are discussed. This work shows that stress relaxation can be used as a quality control method to ensure that AM materials have the creep performance expected for high temperature structural applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, High-Temperature Materials, Copper / Nickel / Cobalt |