| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cold Spray Additive Manufacturing: Part Quality and Performance
|
| Presentation Title |
Tailoring Devitrification in High Strength Aluminum High Entropy and Al 6061 Composite Cold Sprayed Deposits |
| Author(s) |
Denny John, Tanaji Paul, Arvind Agarwal |
| On-Site Speaker (Planned) |
Denny John |
| Abstract Scope |
Cold sprayed deposits of commercial aluminum alloys have limited load-bearing capability due to their maximum achievable strength from the polycrystalline structure. To overcome this limitation, a novel composite deposit is cold sprayed which utilizes a hard amorphous aluminum high entropy alloy (Al HEA) mixed with Al6061 in a weight ratio of 1:1. This composite deposit exhibited a hardness of 261 HV, along with a yield strength of 480 MPa and ultimate tensile strength of 520 MPa. To further enhance strength and elongation, the deposit is subjected to controlled devitrification at progressively increasing temperatures from 302 to 380°C, resulting in a tailored hardness ranging from 175 to 120 HV. The tensile plasticity and deformation mechanisms of the composite deposit are investigated using indentation plastometry and uniaxial pulling experiments. This study contributes to the advancement of cold spray deposition for lightweight and high-strength aluminum alloys. |
| Proceedings Inclusion? |
Planned: |