| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Friction Stir Welding and Processing XIII
|
| Presentation Title |
Effect of Multiple-Pass Friction Stir Processing on Microstructural and Mechanical Properties of Stir Cast AA5083-2wt.%SiC Nanocomposite |
| Author(s) |
Gaurav Rajan, Suhrit Mula |
| On-Site Speaker (Planned) |
Gaurav Rajan |
| Abstract Scope |
Friction stir processing (FSP) has emerged as one of the effective methods for developing ultrafine grained high strengthen aluminium alloy due to dynamic recrystallization caused by stirring action. Therefore, aiming to enhance the performance of these alloys, this study aligns to fabricate AA5083-2wt.%SiC nanocomposite, achieving uniform dispersion of SiC nanoparticles through stir casting followed by multiple-pass FSP. Specimens were processed under optimized parameters (1400 rpm and 40 mm/min traverse speed) upto 5 overlapping FSP passes. Microstructural analysis (OM, SEM-EBSD & TEM) showed more fine recrystallized grains with uniform n-SiC and intermetallics distribution after three overlapped passes. Notably, the inclusion of n-SiC particles in the matrix and multiple overlapped FSP passes significantly enhances the driving force behind the recrystallization and leads to improvement in the mechanical properties i.e., yield strength and hardness. Dominant mechanisms for microstructural evolution by recrystallization phenomena included CDRX (fine grain formation ~2 µm) and PSN (dispersion strengthening). |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, |