Development of Combined Rolling-Extruding Modes for Producing Longish Deformed Semi-Finished Products from Aluminum Alloy with Low Cerium Content

Abstract:

The paper presents the data obtained in the course of experimental studies on the production of rods from the Al-0.5% REM alloy using combined processing methods, such as combined rolling-extruding (CRE) and combined casting and rolling-extruding (CCRE). The variable parameters were the temperature of the ingot or melt, the degree of deformation and the strain rate. With the help of strain gauge equipment, experimental data were obtained on the forces acting on the rolls and the die of the CCRE-200 combined processing unit in the process of obtaining rods with a diameter of 5 and 9 mm. The estimation of the dependence of the mechanical properties of the rods on the variable factors has been carried out. The highest strength properties are possessed by a bar obtained by the CRE mode at a temperature T = 550 oC and a strain rate ξ = 0.74 s^-1. When comparing the temperature of pouring the metal, the highest strength properties are possessed by a rod with a diameter of 9 mm and 5 mm and a strain rate ξ = 0.74 s^-1. If compare in terms of the deformation rate, then the highest strength properties are possessed by a rod with a diameter of 5 mm and a deformation rate ξ = 1.49 s^-1. The plasticity of deformed semi-finished products in all modes is at a high level, which allows further processing.

• Periodical: Key Engineering Materials (Volume 887)
• Pages: 262-268
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.887.262
• Online since: May 2021
• Authors: D. Voroshilov*, S. Sidelnikov, V. Bespalov, A. Kovaleva, D. Nazarenko
• Keywords: Aluminum, Combined Rolling-Extruding, Electrical Resistivity, Mechanical Properties, Rare-Earth Metals, Rod, Wire

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