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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Acknowledgements
This work was supported by the Center for Advanced Non-Ferrous Structural Alloys, a National Science Foundation Industry/University Cooperative Research Center at the Colorado School of Mines, under award number 1624836. This research used resources of the Advanced Photon Source, a U.S. Department of Energy (DOE) Office of Science User Facility operated for the DOE Office of Science by Argonne National Laboratory under Contract No. DE-AC02-06CH11357. Electron microprobe work was performed at the University of Colorado, Boulder Electron Microprobe Laboratory which was funded by the NSF-EAR grant number 1427626. We acknowledge the assistance of A. Bell (CU Boulder) for providing experimental support.
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Jankowski, J., Kaufman, M., Clarke, A., Krishnamurthy, K., Wilson, P. (2019). Determination of the Intermetallic α-Phase Crystal Structure in Aluminum Alloys Solidified at Rapid Cooling Rates. In: Chesonis, C. (eds) Light Metals 2019. The Minerals, Metals & Materials Series. Springer, Cham. https://doi.org/10.1007/978-3-030-05864-7_17
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DOI: https://doi.org/10.1007/978-3-030-05864-7_17
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