About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Aluminum Alloys: Development and Manufacturing
|
| Presentation Title |
Calibration of a Solution Heat Treatment Model, for Magnesium Silicide in AA 6061 |
| Author(s) |
Terscilla Cayla Chinasamy |
| On-Site Speaker (Planned) |
Terscilla Cayla Chinasamy |
| Abstract Scope |
This research examined how solution heat treatment (SHT) temperature (450-570°C) and time (2-32 minutes) affect the dissolution behaviour of Mg2Si in AA 6061. Comparisons were made between experimental results and predictions from a dissolution model. The study also focused on how SHT parameters influence aged electrical conductivity (%IACS) and hardness (HV). Findings aligned with existing literature regarding Mg2Si dissolution kinetics: limited dissolution and particle coarsening occurred at lower temperatures, while near the solvus temperature, full dissolution was achieved within two minutes. Both model predictions and experimental data exhibited similar trends, although the model tended to underestimate Mg2Si dissolution, with a root mean square error (RMSE) of 0.541 µm. Lower SHT temperatures resulted in higher electrical conductivity (~45 %IACS) and moderate hardness (~60 HV) post-ageing. Conversely, higher SHT temperatures improved aged hardness (~105 HV) but decreased electrical conductivity (~41 %IACS). The study demonstrates the utility of predictive modelling for alloy optimization. |
| Proceedings Inclusion? |
Planned: Light Metals |
| Keywords |
Aluminum, Characterization, |