Development of Combined Rolling-Extruding Modes for Producing Longish Deformed Semi-Finished Products from Aluminum Alloy with Low Cerium Content
| Autor: | A. Kovaleva, Sergey B. Sidelnikov, Vadim M. Bespalov, Denis Sergeevich Voroshilov, D. Nazarenko |
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| Rok vydání: | 2021 |
| Předmět: |
Materials science
Mechanical Engineering Alloy Metallurgy chemistry.chemical_element 02 engineering and technology 010501 environmental sciences engineering.material 021001 nanoscience & nanotechnology 01 natural sciences Cerium chemistry Mechanics of Materials Aluminium Electrical resistivity and conductivity engineering General Materials Science Development (differential geometry) 0210 nano-technology 0105 earth and related environmental sciences |
| Zdroj: | Key Engineering Materials. 887:262-268 |
| ISSN: | 1662-9795 |
| Popis: | 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. |
| Databáze: | OpenAIRE |
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