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2019 | OriginalPaper | Chapter

Determination of the Intermetallic α-Phase Crystal Structure in Aluminum Alloys Solidified at Rapid Cooling Rates

Authors : Joseph Jankowski, Michael Kaufman, Amy Clarke, Krish Krishnamurthy, Paul Wilson

Published in: Light Metals 2019

Publisher: Springer International Publishing

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Abstract

Al-Fe-V-Si and Al-Fe-Cr-Si quaternary alloys were produced by arc melting and chill casting, and the crystal structures of the \( \upalpha \)-phase intermetallics (Pm-3 or Im-3, a = 1.25–1.27 nm) that formed are compared with those in the well-characterized Al-Mn-Si and Al-Fe-Mn-Si systems produced by arc melting. The crystal structures were refined using synchrotron x-ray powder diffraction, and compositions were determined using electron probe microanalysis (EPMA). It was shown that the Al-Fe-Cr-Si, Al-Fe-V-Si, and Al-Fe-Mn-Si systems appear to have the same \( \upalpha \)-phase structures after heat treatment at 500 °C. Additionally, a new \( \upalpha \)-phase with low Si content was observed in the Al-Fe-V-Si alloys in the as-cast condition.

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Title: Determination of the Intermetallic α-Phase Crystal Structure in Aluminum Alloys Solidified at Rapid Cooling Rates
Authors: Joseph Jankowski
Michael Kaufman
Amy Clarke
Krish Krishnamurthy
Paul Wilson
Publisher: Springer International Publishing
Book: Light Metals 2019
Print ISBN: 978-3-030-05863-0

Electronic ISBN: 978-3-030-05864-7

Copyright Year: 2019
DOI: https://doi.org/10.1007/978-3-030-05864-7_17

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