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Modelling of Phase Transformation During Homogenization of Ternary Aluminum Alloys

Published online by Cambridge University Press:  21 March 2011

Thorsten Hofmeister ,
Klaus Greven ,
Andreas Ludwig  and
Peter R. Sahm
Thorsten Hofmeister
Affiliation:
Foundry Institute, RWTH-Aachen, Germany
Klaus Greven
Affiliation:
Foundry Institute, RWTH-Aachen, Germany
Andreas Ludwig
Affiliation:
Foundry Institute, RWTH-Aachen, Germany
Peter R. Sahm
Affiliation:
Foundry Institute, RWTH-Aachen, Germany
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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.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 652: Symposium Y – Influences of Interface & Dislocation Behavior on Microstructure Evolution , 2000 , Y8.11
Copyright
Copyright © Materials Research Society 2001

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References

REFERENCES

1. Rappaz, M., Int. Mater. Rev. 34 (1989), 93–123 Google Scholar
2. Kraft, T., Exner, H.E., Z. Metallkd. 87 No. 8 (1996), 598–611 and 652-660Google Scholar
3. Boettinger, W.J. et al. , in Proc. of Int. Conf. Modeling of Casting, Welding and Advanced Solidification Processes VII, ed. Cross, M., Campbell, J. (1995), 649–656 Google Scholar
4. Exner, H.E., Rettenmayr, M., Roosz, A., Mat. Sci. Forum 77 (1991), 205–210 Google Scholar
5. Hansen, P.N., Sahm, P.R., in Proc. of. Int. Conf. Modeling of Casting and Welding Processes IV, ed. Giamei, A.F., Abbaschian, G.J. (1988), 529–542 Google Scholar
6. Fackeldey, M. et al. , in Proc. of 4th Decennial Int. Conf. On Solidification Processing, Sheffield (1997), 41–44 Google Scholar
7. Fackeldey, M., Ludwig, A., Sahm, P.R., Comp. Mater. Sci. 7 (1/2) (1996), 194–199 Google Scholar
8. Eriksson, G., Spencer, P.J., Sippola, H., in Proceedings 2nd Colloquium on Process Simulation, Helsinki University of Technology, Report TKK-V-B104 (1995) 113 Google Scholar
9. , Roósz, Halder, E., Exner, H.E., Mater. Sci. Tech. 2 (1986), 1149–1155 Google Scholar
10. Voller, V.R., Sundarraj, S. in Proc. of Int. Conf. Modeling of Casting, Welding and Advanced Solidification Processes VI, ed. Piwonka, T.S., Voller, V., Katgerman, L. (1993), 251–258 Google Scholar
11. Sasikumar, R., Exner, H.E, Modeling Simul. Mater. Sci. Eng 1 (1992), 19–27 Google Scholar