Microstructure characterization of rapidly solidified Al-Mg-Sc with Li droplets
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T. Gancarz, A. Dobosz, A.-A. Bogno, G. Cempura, N. Schell, R. Chulist, H. Henein, Characterization of rapidly solidified Al-Mg-Sc alloys with Li addition, Materials Characterization, Volume 178, 2021, 111290, ISSN 1044-5803, https://doi.org/10.1016/j.matchar.2021.111290
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https://doi.org/10.1016/j.matchar.2021.111290
Abstract
Description
In the case of increasing possibility of application Al alloys the Al5.0Mg0.2Sc alloy with 3.0 and 6.0 Li (wt %) after atomisation process was proposed in this study. To characterise liquid alloys the discharge crucible method was used, which allow to determine density, surface tension and viscosity with temperature dependency. The experimental results show that the density and surface tension are decreasing with Li content, opposite to viscosity which increasing, what probably is caused by short-range ordering from occurring intermetallic phases. The obtained powder after atomisation process was subjected using calorimeter for design characteristic temperatures, and the microstructure observation and chemical analysis was conducted using scanning and transmission electron microscopy with energy dispersive X-ray spectroscopy. To identify the occurring phases in the study alloys was performed the diffraction pattern in transmission electron microscopy and X-ray diffraction using synchrotron measurements. The conducted measurements and microstructure observation show occurring Al3Sc and Al2MgLi phases in both alloys and AlLi in Al5.0Mg0.2Sc6.0Li alloy, which is in the line with a phase diagram.
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http://purl.org/coar/resource_type/c_6501 http://purl.org/coar/version/c_970fb48d4fbd8a85
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en