| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Phase Transformations and Microstructural Evolution
|
| Presentation Title |
Precipitation Kinetics and Evaluation of the Interfacial Mobility of Precipitates in an AlSi7Cu0.5Mg0.3 Cast Alloy |
| Author(s) |
Pierre Heugue, Daniel Larouche, Francis Breton, Rémi Martinez, X Grant Chen, Denis Massinon |
| On-Site Speaker (Planned) |
Daniel Larouche |
| Abstract Scope |
Heat treatment of cast Aluminum alloys parts enables the formation and distribution of nano-sized precipitates through an optimum sequence including solutionizing, quenching and artificial aging. Quaternary alloys are particularly challenging and the present study aims to understand and outline the precipitation kinetics in the foundry AlSi7Cu0.5Mg0.3 alloy. Using techniques like differential scanning calorimetry (DSC), transmission electron microscopy (TEM), LKSZ kinetic equations and micro-hardness testing, the precipitation kinetics was quantitatively characterized. Activation energies of the phase transformations were extracted using the Kissinger analysis of non-isothermal DSC runs conducted at different stationary heating rates. Finally, a first evaluation of the interfacial mobility of precipitates in this alloy was made using the developed methodology. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |