| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
2025 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-55: Development of Lightweight, Ballistic Shock-Resistant Materials by Friction Stir Processing |
| Author(s) |
Varun Pushpa, Amlan Kar, Grant A Crawford |
| On-Site Speaker (Planned) |
Varun Pushpa |
| Abstract Scope |
The primary objective of the investigation is to develop lightweight armor materials suitable for Arctic environments. The investigation focuses on developing homogenized microstructure that causes improvement in mechanical properties given their strong sensitivity to service temperature and possible enhancement of tri-axial deformation properties. Therefore, friction stir processing (FSP) was performed on low-carbon steel (A572) to refine grain and fabricate a recrystallized microstructure.
After FSP, the microstructure in the processed zone was recrystallized, and the grain size decreased from 20 μm to 3 μm. This resulted in a significant increase in hardness, from 169 HV0.5 to 263 HV0.5. The FSP-processed substantially improved impact toughness at both room and cold temperatures (-60 ± 2°C) compared to the base material. These results suggest that FSP-processed steel is a suitable lightweight armor material for room and low-temperature conditions, making it an excellent candidate for lightweight armor and structural applications in Arctic environments. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Mechanical Properties, Additive Manufacturing, Other |