Effects of cold rolling and annealing processes on the microstructure and properties of micro-alloyed copper
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Date
2023
Authors
Mitrović, Milijana
Marjanović, Saša
Trumić, Biserka
Petrović, Jasmina
Nedeljković, Milan
Journal Title
Journal ISSN
Volume Title
Publisher
University of Belgrade, Technical Faculty in Bor
Source
Proceedings - 54th International October Conference on Mining and Metallurgy - IOC 2023, 18-21 October 2023, Bor Lake, Serbia, 2023, 543-546
Volume
Issue
Abstract
In this paper, the change of mechanical and structural properties of micro-alloyed copper during the cold rolling and annealing process was monitored. Melting and casting of micro-alloyed copper was carried out in an electrical resistance furnace, with the "up-cast" casting process. The melted and chemically homogenized material was further subjected to the extrusion process, after which cold plastic deformation was performed with deformation degrees of 10, 30, 50 and 75%. Annealing of cold deformed samples was performed at 450°C for 35 min. The cooling of the samples was done in water with alcohol. After each stage of the experiment, the values of hardness, tensile strength and relative elongation were measured. The results showed that the values of hardness and tensile strength of unannealed samples increase with the increase in the deformation degree, while the relative elongation decreases. Deformation degree also affected the final grain size after the annealing process. At the highest deformation degree, the finest grains were obtained.
Description
Keywords
micro-alloyed copper, extrusion, plastic deformation, microstructure, mechanical properties
Citation
DOI
Scopus
ISSN
ISBN
978-86-6305-140-9
License
CC-BY-NC-ND