| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Effect of Short Cycle Heat Treatment on the Microstructure and Mechanical Properties of Additively Manufactured Mar-M 509 |
| Author(s) |
Siba Sundar Sahoo, Balila Nagamani Jaya, Dheepa Srinivasan |
| On-Site Speaker (Planned) |
Siba Sundar Sahoo |
| Abstract Scope |
Mar-M 509 is a Cobalt based superalloy exhibiting excellent oxidation and hot-corrosion resistance, suitable for elevated temperature applications (nozzle guide vanes, blades) in aero-engines. Additive manufacturing of Mar-M 509 can produce end-use components with complex geometries, while maintaining dimensional tolerance even while achieving rapid cooling. Short-cycle aging heat treatment of laser powder-bed-fusion processed Mar-M 509 is explored in this study to enhance the mechanical properties of this alloy, especially tensile ductility, toughness, and fracture toughness while retaining room and elevated-temperature strengths. Detailed microstructural analysis across length scales (mm to nm) carried out using advanced characterization tools is correlated to novel miniature (mm), small scale, non-conventional, tensile and fracture toughness measurements combined with digital image correlation based in-situ strain mapping. Measurements are made across the longitudinal and transverse directions, before and after heat treatment. Micro-mechanisms leading to intrinsic and extrinsic size-effects based improvements in mechanical properties will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |