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Paris NanoSciences Institute |  |
Journal articles
Eutectic growth in two-phase multicomponent alloys
Abstract : A theory of two-phase eutectic growth for a multicomponent alloy is presented. Using the same hypotheses as the Jackson-Hunt theory, we find that the growth law of the microstructure given by Jackson and Hunt for binary alloys can be generalized to systems with N elements. Thermodynamic parameters involved in this theory are linked to the Gibbs free energies of the phases which makes it possible to compute these parameters with CALPHAD tools. A model is derived from this general theory for ternary alloys which does not contain any assumptions on the alloy thermodynamic properties, contrary to previous models. We find that a small addition of a ternary alloying element with a small diffusivity to a binary alloy can significantly alter the spacing of the eutectic.
Cited literature [24 references]
https://hal.sorbonne-universite.fr/hal-01518928
Contributor : Bernard Croset Connect in order to contact the contributor
Submitted on : Friday, May 5, 2017 - 3:51:25 PM
Last modification on : Thursday, February 10, 2022 - 3:24:01 PM
Long-term archiving on: : Sunday, August 6, 2017 - 4:05:25 PM
Contributor : Bernard Croset Connect in order to contact the contributor
Submitted on : Friday, May 5, 2017 - 3:51:25 PM
Last modification on : Thursday, February 10, 2022 - 3:24:01 PM
Long-term archiving on: : Sunday, August 6, 2017 - 4:05:25 PM
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