Mechanochemical Formation of Solid Solution of Aluminum in Copper

X-ray diffraction analysis is used to study the mechanochemical formation of a solid solution in the Cu–10 wt % Al system. The formation of the solid solution is shown to occur via the formation of the CuAl 2 and Cu 9 Al 4 intermetallic compounds, which, in the course of mechanical activation, react...

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Bibliographic Details
Published in:Physics of metals and metallography 2021-04, Vol.122 (4), p.370-375
Main Authors: Grigoreva, T. F., Petrova, S. A., Kovaleva, S. A., Kiseleva, T. Yu, Zholudev, S. I., Vosmerikov, S. V., Udalova, T. A., Devyatkina, E. T., Polyakov, S. N., Lyakhov, N. Z.
Format: Article
Language:English
Subjects:
Aluminum
Backup software
Ball milling
Chemistry and Materials Science
Copper
Crystallites
Diffraction
Diffusion
Intermetallic compounds
Materials Science
Metallic Materials
Phase Transformations
Solid solutions
Structure
X-rays
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Summary:X-ray diffraction analysis is used to study the mechanochemical formation of a solid solution in the Cu–10 wt % Al system. The formation of the solid solution is shown to occur via the formation of the CuAl 2 and Cu 9 Al 4 intermetallic compounds, which, in the course of mechanical activation, react with residual copper to form the Cu(Al), solid solution of aluminum in copper. Under the conditions of mechanical activation in a high-energy planetary ball mill, the two-phase product of the mechanochemical synthesis, namely, 90 wt % Cu(Al) + 10 wt % Cu 9 Al 4 forms is formed. It is shown that the maximum reached Al concentration in the solid solution is 7.4 wt %. The microstresses of the solid solution are ~1%; the crystallite size reaches 35–40 nm.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X21030066