Study of the Al–Sc Solid Solution Decomposition during Annealing of Strained Al–0.5% Mg–Sc Alloys

Results of investigations of the kinetics of solid solution decomposition during annealing of fine-grained (FG) Al–0.5% Mg–Sc conductor alloys with different scandium contents are reported. The alloys are prepared by induction casting, and the FG microstructure is formed by equal-channel angular pre...

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Bibliographic Details
Published in:Physics of metals and metallography 2023-10, Vol.124 (10), p.979-986
Main Authors: Shadrina, I. S., Nokhrin, A. V., Bobrov, A. A., Krutova, O. G., Shishulin, E. O., Shcherbak, G. V., Kopylov, V. I., Chuvil’deev, V. N., Smirnova, E. S., Tabachkova, N. Yu
Format: Article
Language:English
Subjects:
Aluminum
Annealing
Avrami equation
Chemistry and Materials Science
Copper alloys
Decomposition
Diffusion
Electric properties
Equal channel angular pressing
Hardness
Kinetics
Magnesium base alloys
Materials Science
Metallic Materials
Microhardness
Phase Transformations
Scandium
Solid solutions
Specialty metals industry
Structure
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Summary:Results of investigations of the kinetics of solid solution decomposition during annealing of fine-grained (FG) Al–0.5% Mg–Sc conductor alloys with different scandium contents are reported. The alloys are prepared by induction casting, and the FG microstructure is formed by equal-channel angular pressing. The kinetics of solid solution decomposition is studied by electrical resistivity and microhardness measurements. The results are analyzed using the Johnson–Mehl–Avrami–Kolmogorov equation. It is shown that, after annealing of the UF alloys, the precipitation of Al 3 Sc particles at lattice dislocation cores is observed, and discontinuous decomposition of scandium solid solution in aluminum occurs.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X23601750