About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys, Characterization and Processing
|
| Presentation Title |
E-5: Effect of Thermal Treatment (T5) on Microstructure and Tensile Properties of Vacuum High Pressure Die Cast Al-Si-Mg Alloy |
| Author(s) |
Hongfa Hu, Ali Dhaif, Kazi Ahmed |
| On-Site Speaker (Planned) |
Hongfa Hu |
| Abstract Scope |
In this work, a modified Al-Si-Mg (A356) alloy was prepared by vacuum-assisted high pressure die casting processes (V-HPDC). To release residual stresses, various thermal treatment schemes over a wide range of temperatures between 120˚ to 350˚ C were experimented to the as-cast V-HPDC alloy, in an effort of understanding the effect of thermal treatment on tensile properties of V-HPDC modified Al-Si-Mg (A356) alloy. The morphology of eutectic silicon has a sound effect on the tensile properties of the tested alloy. The content of magnesium-based intermetallic phase, their morphology and distribution throughout the matrix affect on the tensile properties as well. The reduction in the strengths of the alloy treated at 350˚C for two hours should be at least attributed partly to the absence of the magnesium-based intermetallic phase. However the presence of sufficient amount of magnesium intermetallic phase plays an important role in strengthening the alloy thermally treated at 200˚C. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Characterization, Phase Transformations |