| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Late News Poster Session
|
| Presentation Title |
Effect of Multi-axial Forging on Mechanical Properties and Microstructure of AA7075/TaC Composites |
| Author(s) |
John Samson Khalkho, Dagarapu Benny Karunakar |
| On-Site Speaker (Planned) |
Dagarapu Benny Karunakar |
| Abstract Scope |
In the present study, high-strength AA7075 matrix composites reinforced with tantalum carbide (1, 3, 5, and 7 wt%) were developed through stir casting, followed by multi-axial forging (MAF). MAF was carried out at room temperature with 20% thickness reduction on 10mm thickness composite jobs. The evolution of microstructures during casting and the MAF process were examined by scanning electron microscopy with electron back-scattered diffraction. The microstructure reveals that with the addition of TaC, grain refinement occurs due to the pinning effect. The microstructure of the deformed specimen shows the suppression of dynamic recovery and dislocation density due to strain energy induced at room temperature. The Vickers hardness and tensile strength were found to be the highest for the 5 wt % TaC reinforced specimen. MAF specimen shows an improvement in mechanical properties and percentage elongation. The enhancement in mechanical properties of the MAF specimen is due to higher dislocation density. |
| Proceedings Inclusion? |
Undecided |
| Keywords |
Composites, Shaping and Forming, Mechanical Properties |