| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture: Towards Accurate Prediction
|
| Presentation Title |
The Effect of Build Parameters on the Environmentally Assisted Cracking Behavior in AM 316L |
| Author(s) |
James Burns, Michael Roach |
| On-Site Speaker (Planned) |
James Burns |
| Abstract Scope |
A linear elastic fracture mechanics (LEFM) paradigm will be used to assess the EAC behavior of wrought and AM 316L stainless steel (both laser powder bed and direct energy deposition) as a function of loading orientation. This comparison will be completed for various K levels and various environmental severities (e.g. T, potential, solution composition, etc.) Important differences are noted between the AM and wrought materials and these are investigated using EBSD, KAM, and phase mapping of the crack tip for each material system. Critically, the AM material is much less susceptible to crack tip branching and has a higher propensity to blunt than the wrought material. These findings are considered in the context of a detailed study of the hardening behavior that suggests a modification of the twinning behavior between AM and wrought. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Environmental Effects, Mechanical Properties, Additive Manufacturing |