| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Fatigue and Fracture IV: Toward Confident Use in Critical Applications
|
| Presentation Title |
Additive Manufacturing of Fatigue Resistant Austenitic Stainless Steel |
| Author(s) |
Jonathan W. Pegues, Michael Roach, Nima Shamsaei |
| On-Site Speaker (Planned) |
Jonathan W. Pegues |
| Abstract Scope |
Additive manufacturing promises to revolutionize the production of parts/assemblies across several industries. Many of these applications are structural and require a thorough characterization of the fatigue behavior. One of the biggest promises attributed to additive manufacturing of fatigue critical parts is the ability to tailor the microstructure to meet specific loading conditions and improve performance. Process induced defects and surface roughness inherent to additive manufacturing, however, have proven to be severely detrimental to the fatigue behavior of these materials. This work characterizes the effects of process conditions on the resulting structure of an additively manufactured austenitic stainless steel. The relationship between the material structure including microstructure, surface roughness, and defect distribution and the resulting mechanical performance is also investigated to establish the process-structure-property relationships. Results indicate that improved fatigue resistance for austenitic stainless steels can be achieved by avoiding the typical failure mechanisms associated with their wrought counterparts. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |