| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Al-Mg-Si Development Using Combinatorial Laser Directed Energy Deposition |
| Author(s) |
Aleena Masaeng, Qingyu Pan, Monica Kapoor, John Carsley, Xiaoyuan Lou |
| On-Site Speaker (Planned) |
Aleena Masaeng |
| Abstract Scope |
Al-Mg-Si alloys are employed in automotive vehicles and extensively used as structural materials due to their high strength, good corrosion resistance, and good weldability. Built upon the previous success on combinatorial alloy development for Al-Mn-Fe-Si using laser directed energy deposition (DED), we demonstrate the feasibility of using the same high-throughput approach to develop Al-Mg-Si alloys. Al-Mg-Si alloys are known for their susceptibility to thermal cracking during laser solidification. Due to the heat-treatable nature of the alloy, the precipitates are also sensitive to thermal history. By optimizing laser deposition process parameters and DED feedstock materials, crack-free samples, with precipitates and dispersoids similar to wrought products, can be successfully printed without the use of grain refiners for a wide range of alloy compositions. Precipitation and mechanical properties are studied as the function of alloy compositions and compared to wrought counterparts. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Additive Manufacturing, Aluminum, Characterization |