Modelling of Phase Transformation During Homogenization of Ternary Aluminum Alloys

Abstract

The microstructure determines for the most part mechanical properties of castings. This is the case especially with age-hardening aluminum alloys. To predict the phase transformation in cast parts during and after solidification a sophisticated approach to a coupled modeling of various simulation phenomena is presented. This approach couples a diffusion equation solver which considers the online estimation of thermodynamic equilibria with a macroscopic model for temperature calculation. The coupled micro-model predicts the dendrite solidification of ternary alloys. To simulate the phase transformation in temperature zones below solidification a homogenization model is added. Permanent mould casting experiments with ternary aluminum alloys are used to validate these models.

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Correspondence to Thorsten Hofmeister.

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Hofmeister, T., Greven, K., Ludwig, A. et al. Modelling of Phase Transformation During Homogenization of Ternary Aluminum Alloys. MRS Online Proceedings Library 652, 811 (2000). https://doi.org/10.1557/PROC-652-Y8.11

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