International Journal of Minerals, Metallurgy and Materials, ( ISI ), Volume (21), No (10), Year (2014-10) , Pages (680-689)

Title : ( Effect of partition coefficient on microsegregation during solidification of aluminium alloys )

Authors: Mohammad Hasan Avazkonandeh Gharavol , Mohsen Haddad Sabzevar , Prof. Hasse Fredriksson ,

Citation: BibTeX | EndNote

Abstract

In the modeling of microsegregation, the partition coefficient is usually calculated using data from the equilibrium phase diagrams.The aim of this study was to experimentally and theoretically analyze the partition coefficient in binary aluminum–copper alloys. The samples were analyzed by differential thermal analysis (DTA), which were melted and quenched from different temperatures during solidification. The mass fraction and composition of phases were measured by image processing and scanning electron microscopy (SEM) equipped with an energy-dispersive X-ray spectroscopy (EDS) unit. These data were used to calculate as the experimental partition coefficients with four different methods. The experimental and equilibrium partition coefficients were used to model the concentration profile in the primary phase. The modeling results show that the profiles calculated by the experimental partition coefficients are more consistent with the experimental profiles, compared to those calculated using the equilibrium partition coefficients.

Keywords

aluminum copper alloys; solidification; partition coefficient; microsegregation; numerical modeling; differential thermal analysis
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@article{paperid:1044702,
author = {Avazkonandeh Gharavol, Mohammad Hasan and Haddad Sabzevar, Mohsen and Prof. Hasse Fredriksson},
title = {Effect of partition coefficient on microsegregation during solidification of aluminium alloys},
journal = {International Journal of Minerals, Metallurgy and Materials},
year = {2014},
volume = {21},
number = {10},
month = {October},
issn = {1674-4799},
pages = {680--689},
numpages = {9},
keywords = {aluminum copper alloys; solidification; partition coefficient; microsegregation; numerical modeling; differential thermal analysis},
}

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%0 Journal Article
%T Effect of partition coefficient on microsegregation during solidification of aluminium alloys
%A Avazkonandeh Gharavol, Mohammad Hasan
%A Haddad Sabzevar, Mohsen
%A Prof. Hasse Fredriksson
%J International Journal of Minerals, Metallurgy and Materials
%@ 1674-4799
%D 2014

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