| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Length-Scale Phenomena in Creep Behavior of Laser Powder Bed Fusion (LPBF) 316H Stainless Steel |
| Author(s) |
Xuan Zhang, Lin Gao, Ashale Fernando, Gareth Douglas, Bo Chen, Caleb Massey, Mark Messner |
| On-Site Speaker (Planned) |
Xuan Zhang |
| Abstract Scope |
As the nuclear industry adopts additive manufacturing technologies, the high-carbon 316H stainless steel (SS) produced by LPBF has gained particular interest for its potential to be used in high-temperature advanced reactors. Qualifying the material for reactor structural applications requires a large creep dataset and a thorough understanding of the microstructure-property correlation. This work summarizes the creep test data obtained on various LPBF 316H SS materials produced by different machines with variations in powder chemistry and post-build heat treatments. The results are compared against those from the wrought material. Multi-length-scale characterization, including high-energy x-ray micro-CT, scanning and transmission electron microscopy and analytical microscopy, is performed to understand the low creep rate and the reduced ductility in the LPBF material. The knowledge gained contributes towards the development of an accelerated qualification pathway. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Iron and Steel |