About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Steels in Extreme Conditions
|
| Presentation Title |
Effect of Friction Stir Processing on the Microstructure and Mechanical Performance of Low-Carbon Steel under Arctic Conditions |
| Author(s) |
Varun Vasudevan Pushpa, Amlan Kar, Grant A Crawford |
| On-Site Speaker (Planned) |
Varun Vasudevan Pushpa |
| Abstract Scope |
Cold-climate infrastructure and defense systems operating in Arctic conditions require structural materials that maintain high strength and ductility at sub-zero temperatures. This work investigates the effect of FSP on the microstructural evolution and mechanical performance of low-carbon steel at both ambient and sub-zero temperatures. FSP was used to refine the microstructure through severe plastic deformation and dynamic recrystallization. At sub-zero temperature (-60 ± 2°C), mechanical testing showed a significant increase in both yield and tensile strength while preserving good ductility. A detailed characterization was conducted to evaluate microstructural evolution and post-fracture analysis to clarify the structure–property relationship. The improved mechanical properties at room and sub-zero temperatures demonstrate the effectiveness of FSP in tailoring microstructures for Arctic environments. The development of a uniform and recrystallized microstructure contributed to better strain accommodation at sub-zero temperatures. These findings confirm that FSP-modified low-carbon steel is a promising material for lightweight armor used in Arctic applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Mechanical Properties |