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On the characterization of eutectic grain growth during solidification

Published online by Cambridge University Press:  05 March 2013

M. Morua ,
M. Ramirez-Argaez  and
C. Gonzalez-Rivera
M. Morua
Affiliation:
Departamento de Ingeniería Metalúrgica, Facultad de Química, UNAM, 04510, México D.F.
M. Ramirez-Argaez
Affiliation:
Departamento de Ingeniería Metalúrgica, Facultad de Química, UNAM, 04510, México D.F.
C. Gonzalez-Rivera
Affiliation:
Departamento de Ingeniería Metalúrgica, Facultad de Química, UNAM, 04510, México D.F.
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Abstract

The purpose of this work is to compare the results obtained from three methodologies intended to estimate kinetic parameters describing quantitatively the grain growth during equiaxed eutectic solidification in order to identify the best procedure to characterize grain growth kinetics. A heat transfer / solidification kinetics model is implemented to simulate the cooling and solidification of eutectic Al-Si and eutectic cast iron in sand molds. Using simulated cooling curves and volume grain density data generated by the model, the three methods are applied to obtain their predicted grain growth coefficients. The predicted results are compared with the grain growth coefficients used in the model. The outcome of this work suggests that two of the three methods under study represent the best option to obtain the kinetic parameters of equiaxed growth during eutectic solidification.

Keywords

grain sizephase tranformationkinetics
Type
Articles
Information
MRS Online Proceedings Library (OPL) , Volume 1485: Symposium 7D – Advanced Structural Materials—2012 , 2012 , pp. 161 - 166
Copyright
Copyright © Materials Research Society 2013 

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References

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