|About this Abstract
||2016 TMS Annual Meeting & Exhibition
||Material Design Approaches and Experiences IV
||Computational Thermodynamic Facilitate Solution Heat Treatment Design for Aluminum and Magnesium Alloys
||Song-Mao Liang, Di Wu, Rainer Schmid-Fetzer
|On-Site Speaker (Planned)
Two-stage or multi-stage solution heat treatment (SHT) is often applied in Al and Mg alloys. However, the temperature of the heat treatment is often determined by trial and error. Computational thermodynamics is a powerful tool for more focused processing design. In the present work, we will provide a guideline for developing solution heat treatment schemes by combining the Scheil solidification simulation and equilibrium phase diagram calculations. The non-equilibrium solidus temperature (NEST) of the alloys can be determined by Scheil solidification simulation, and the equilibrium solvus and solidus of the alloys can be obtained from the equilibrium phase diagrams. Based on these data, a two-stage or multi-stage solution heat treatment scheme can be optimized. The thermodynamic designed SHT scheme will be compared with experimental work of some real alloys, which includes several successfully (A319 Al alloy, AZ64 Mg alloy and Mg-Sn-Zn-Al alloy) and unsuccessfully (Mg-Zn-Ca alloy) heat treated alloys.
||Planned: TMS Journal: JOM