| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Towards Rapid Qualification
|
| Presentation Title |
Influence of Post-build Treatments on the Hydrogen Embrittlement Susceptibility of Additively Manufactured 316L under Ambient and Cryogenic Temperatures |
| Author(s) |
Zachary D. Harris, Guillermo Alvarez, Kentaro Wada, Cristina Rodriguez, Emilio Martinez-Paneda |
| On-Site Speaker (Planned) |
Zachary D. Harris |
| Abstract Scope |
The influence of post-build treatment on the hydrogen embrittlement behavior of additively manufactured (AM) 316L fabricated using laser powder bed fusion was assessed at room temperature (RT) and -50°C. The four AM conditions evaluated in this work included the as-built state, a high-temperature annealing treatment, a hot isostatic press (HIP) treatment, and HIP plus pre-strained to 30% plastic strain. After gaseous hydrogen charging, the ductility of all AM conditions was found to be similar to CM 316L at RT, with the HIP condition actually exceeding the CM material. Moreover, testing of hydrogen-charged samples at -50°C revealed that HIP AM 316L had nearly double the ductility of CM 316L. Ferritscope measurements suggest the improved performance of the AM 316L may be related to a reduced propensity for strain-induced martensite formation. These results indicate that AM 316L could be post-processed to exhibit similar or even improved hydrogen resistance relative to CM 316L. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Environmental Effects |