Affiliation:
1. Hydro Aluminium a.s.
2. Hycast AS
3. Institute of Energy Technology
4. Hydro Aluminium a.s. R&D Materials Technology
Abstract
A simplified numerical model for the solid state phase transformation from Al6(Mn,Fe)
to α-Al(Mn,Fe)Si phase in 3xxx alloys has been constructed. In this model, the phase
transformation is assumed to be initiated by the heterogeneous nucleation of α-Al(Mn,Fe)Si
dispersoids at the interface between Al6(Mn,Fe) particle and matrix and the growth of the α-
Al(Mn,Fe)Si phase into the Al6(Mn,Fe) particle is controlled by the diffusion of Si from the matrix.
The model has been implemented into a numerical homogenization model. The simulation results
show that the implementation of the phase transformation model improves much the prediction
results of the homogenization model on the evolution of solid solution level of alloying elements
and the volume fraction evolution of dispersoids in 3xxx alloys during homogenization.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,Condensed Matter Physics,General Materials Science
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