STUDIES OF MICROSTRUCTURE AND PROPERTIES FORMATION DURING PRODUCTION OF AL-2CU-2MN ALLOY STRIP
HNJCCF
DOI:
https://doi.org/10.25712/ASTU.2072-8921.2025.01.023Abstract
The paper investigates microstructure as well as physical and mechanical properties formation during production of cold-rolled strip from Al-2Cu-2Mn aluminum alloy. Specifically, the effect of deformation (hot and cold rolling) and heat treatment on alloys mechanical properties and electrical conductivity has been studied. It is demonstrated, that the produced article retains its non-recrystallized structure up to the annealing temperature of 450°C, and also contains finely dispersed secondary Al20Cu2Mn3 precipitates, formed at this temperature and increasing alloy strength. In addition, this alloy has high electrical conductivity value after annealing, justifying its application as EC grade material. The produced strip, annealed during 3 hours at 400°C, has ultimate strength and electrical conductivity of 294 MPa and 29.3 MS/m, respectively. In addition, it was established, that hot rolling had positive effect on strength properties, thermal stability, specifically.
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Copyright (c) 2025 Alina A. Levagina, Evgenii V. Aryshenski, Sergei V. Konovalov, Alexander M. Drits, Maksim S. Tepterev
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