Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Microstructure and mechanical properties evolution of 6061 aluminum alloy formed by forward thixoextrusion process
Highlights ► The globular microstructure of thixoformed parts obtain at the higher temperatures. ► The microstructure of thixoformed parts consists of relatively equiaxed grains. ► Precipitation phases decrease in the grain boundaries with increasing temperature. ► SEM results show the fracture surface of thixoformed parts has a mixture mode.
Abstract Thixoforming process is a semisolid metal processing route, which involves forming of alloys in the semisolid state to near net shaped products. To investigate the effects of thixoextrusion parameters on microstructure and mechanical properties of commercial 6061 aluminum alloy, forward extrusion experiments were carried out in the semisolid state. The results showed that fine and globular microstructure can be achieved using semisolid forming. SEM micrographs and mechanical tests results showed that the tensile behavior of thixoformed specimens at billet temperatures below 620°C is relatively elastic and brittle. With increasing die temperature up to 620°C more elongation value and ductility were obtained in the thixoformed specimens.
Microstructure and mechanical properties evolution of 6061 aluminum alloy formed by forward thixoextrusion process
Highlights ► The globular microstructure of thixoformed parts obtain at the higher temperatures. ► The microstructure of thixoformed parts consists of relatively equiaxed grains. ► Precipitation phases decrease in the grain boundaries with increasing temperature. ► SEM results show the fracture surface of thixoformed parts has a mixture mode.
Abstract Thixoforming process is a semisolid metal processing route, which involves forming of alloys in the semisolid state to near net shaped products. To investigate the effects of thixoextrusion parameters on microstructure and mechanical properties of commercial 6061 aluminum alloy, forward extrusion experiments were carried out in the semisolid state. The results showed that fine and globular microstructure can be achieved using semisolid forming. SEM micrographs and mechanical tests results showed that the tensile behavior of thixoformed specimens at billet temperatures below 620°C is relatively elastic and brittle. With increasing die temperature up to 620°C more elongation value and ductility were obtained in the thixoformed specimens.
Microstructure and mechanical properties evolution of 6061 aluminum alloy formed by forward thixoextrusion process
Abolhasani, D. (Autor:in) / Ezatpour, H.R. (Autor:in) / Sajjadi, S.A. (Autor:in) / Abolhasani, Q. (Autor:in)
29.01.2013
7 pages
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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