About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Lightweight Alloy Matrix Composites
|
| Presentation Title |
Enhanced Thermal Stability in Additive Friction Stir Deposited ODS IN9052 Al Alloy |
| Author(s) |
Aishani Sharma, Roopam Jain, Priyanka Agrawal, Shreya Mukherjee, Anurag Gumaste, Davin F. Davis, Ravi Sankar Haridas, Rajiv Mishra |
| On-Site Speaker (Planned) |
Aishani Sharma |
| Abstract Scope |
Mechanically alloyed oxide dispersion strengthened (MA-ODS) IN9052 aluminum alloy shows excellent high-temperature strength but suffers from limited ambient ductility. This study presents the first successful attempt to additively manufacture MA-ODS IN9052 using the solid-state additive friction stir deposition (AFSD) process. AFSD processing transformed the alloy’s initial strain-softening behavior into significant work hardening, achieving a yield strength of ~380 MPa at room temperature with improved ductility. Remarkably, the alloy exhibited superior thermal stability, with yield strength increasing by ~22% at 240°C and ~49% at 340°C compared to its forged counterpart. This enhancement surpasses many commercial high-temperature Al alloys. Optimized AFSD parameters induced microstructural heterogeneity and formed nanoscale carbon-rich clusters around oxides and carbides, effectively impeding grain boundary sliding and dislocation motion. These results, validated by TEM and atom probe tomography, demonstrate AFSD’s potential for engineering high-performance structural aluminum alloys for elevated temperature applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Temperature Materials, Aluminum, Additive Manufacturing |