Two-Phase Eutectic Growth in Al-Cu and Al-Cu-Ag

Oriane Senninger; Matthew Peters; Peter W. Voorhees

doi:10.1007/s11661-018-4488-4

Two-Phase Eutectic Growth in Al-Cu and Al-Cu-Ag

Oriane Senninger^*, Matthew Peters, Peter W. Voorhees

^*Corresponding author for this work

Materials Science and Engineering

Research output: Contribution to journal › Article › peer-review

6 Scopus citations

Abstract

The microstructure developed by two-phase lamellar eutectics (α) –(θ-Al ₂Cu) in Al-Cu and Al-Cu-Ag alloys is analyzed. A model of two-phase eutectic growth in multicomponent alloys is used to determine the scaling law of the eutectic microstructure using the alloy thermophysical properties. The application of the model to these alloys shows that the addition of Ag to Al-Cu alloys does not significantly change the length scale of the microstructure, which is in agreement with previous experimental studies. This is explained by the combined phenomena of the decrease in interface energies with the addition of Ag and the superheating of the (α) phase interface induced by the Ag composition profile.

Original language	English (US)
Pages (from-to)	1692-1707
Number of pages	16
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	49
Issue number	5
DOIs	https://doi.org/10.1007/s11661-018-4488-4
State	Published - May 1 2018

ASJC Scopus subject areas

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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title = "Two-Phase Eutectic Growth in Al-Cu and Al-Cu-Ag",

abstract = "The microstructure developed by two-phase lamellar eutectics (α) –(θ-Al 2Cu) in Al-Cu and Al-Cu-Ag alloys is analyzed. A model of two-phase eutectic growth in multicomponent alloys is used to determine the scaling law of the eutectic microstructure using the alloy thermophysical properties. The application of the model to these alloys shows that the addition of Ag to Al-Cu alloys does not significantly change the length scale of the microstructure, which is in agreement with previous experimental studies. This is explained by the combined phenomena of the decrease in interface energies with the addition of Ag and the superheating of the (α) phase interface induced by the Ag composition profile.",

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T1 - Two-Phase Eutectic Growth in Al-Cu and Al-Cu-Ag

AU - Senninger, Oriane

AU - Peters, Matthew

AU - Voorhees, Peter W.

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N2 - The microstructure developed by two-phase lamellar eutectics (α) –(θ-Al 2Cu) in Al-Cu and Al-Cu-Ag alloys is analyzed. A model of two-phase eutectic growth in multicomponent alloys is used to determine the scaling law of the eutectic microstructure using the alloy thermophysical properties. The application of the model to these alloys shows that the addition of Ag to Al-Cu alloys does not significantly change the length scale of the microstructure, which is in agreement with previous experimental studies. This is explained by the combined phenomena of the decrease in interface energies with the addition of Ag and the superheating of the (α) phase interface induced by the Ag composition profile.

AB - The microstructure developed by two-phase lamellar eutectics (α) –(θ-Al 2Cu) in Al-Cu and Al-Cu-Ag alloys is analyzed. A model of two-phase eutectic growth in multicomponent alloys is used to determine the scaling law of the eutectic microstructure using the alloy thermophysical properties. The application of the model to these alloys shows that the addition of Ag to Al-Cu alloys does not significantly change the length scale of the microstructure, which is in agreement with previous experimental studies. This is explained by the combined phenomena of the decrease in interface energies with the addition of Ag and the superheating of the (α) phase interface induced by the Ag composition profile.

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Two-Phase Eutectic Growth in Al-Cu and Al-Cu-Ag

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