The Impact of Thermomechanical Treatment on Structure, Electrical Resistance and Hardness of Al–4% Cu–3% Mn Alloy Casted in an Electromagnetic Crystallizer

The impact of thermomechanical treatment on the structure, electrical resistance, and hardness of the Al–4% Cu–3% Mn alloy, which was obtained by casting in an electromagnetic crystallizer, has been investigated using computational and experimental methods. It has been shown that at the cooling rate...

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Bibliographic Details
Published in:Physics of metals and metallography 2024-02, Vol.125 (2), p.203-210
Main Authors: Belov, N. A., Cherkasov, S. O., Korotkova, N. O., Motkov, M. M.
Format: Article
Language:English
Subjects:
Chemistry and Materials Science
Cooling rate
Copper
Diffusion
Dispersions
Electrical resistance
Hardness
Levitation casting
Manganese base alloys
Materials Science
Metallic Materials
Phase Transformations
Solid solutions
Structure
Thermal resistance
Thermomechanical treatment
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Summary:The impact of thermomechanical treatment on the structure, electrical resistance, and hardness of the Al–4% Cu–3% Mn alloy, which was obtained by casting in an electromagnetic crystallizer, has been investigated using computational and experimental methods. It has been shown that at the cooling rate of more than 1000 K/s, the whole amount of manganese and half of the copper content are dissolved in the aluminum solid solution. This enables the formation of a structure with the maximum possible number of Al 20 Cu 2 Mn 3 dispersoids after subsequent thermomechanical treatment, resulting in a significant improvement in the thermal resistance compared to the known alloys of Al–Cu–Mn system.
ISSN:0031-918X
1555-6190
DOI:10.1134/S0031918X23603177