| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Agile Additive Manufacturing by Employing Breakthrough Functionalities
|
| Presentation Title |
Microstructure-deformation Mechanism Relationships in an Additive
Friction Stir Deposition Fe-Cr-Ni Alloy |
| Author(s) |
Shreya Mukherjee, Anurag Gumaste, Ravi Sankar Haridas, Abhijeet Dhal, Roopam Jain, Aishani Sharma, Rajiv Mishra |
| On-Site Speaker (Planned) |
Shreya Mukherjee |
| Abstract Scope |
This research provides the first correlation of the process parameters to the microstructure and mechanical properties of additive friction stir deposited Fe-Cr-Ni alloy. The solid-state AFSD process enables additively manufacturing materials with high deposition rates while avoiding liquid-solid phase transformation associated defects. An equiaxed grain morphology and reduced average grain size by an order of magnitude was observed in the AFSD samples, where Electron Backscatter Diffraction identified the layer-dependent texture. Interestingly, the tensile behavior reflected the texture layer-dependence with increasing tensile strength from the bottom to the top of the deposition. Microscale-XRD analysis shows the varying fraction of austenite and ferrite with varying build height. Our investigation reveals that a gradual change in microstructure from top to bottom ultimately leads to the variation in strengthening mechanisms that are operative at different layers. Therefore, the results provide a spatial correlation of the processing-structure-property of Fe-Cr-Ni alloy with respect to build layers. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Other |