Mechanical properties of homogenized twin-roll cast and conventionally cast AZ31 magnesium alloys
Journal Title: Materials Engineering - Materialove inzinierstvo (MEMI) - Year 2015, Vol 22, Issue 1
Abstract
The improvement of mechanical properties of magnesium alloys nowadays is very important, because of the variety of industrial applications. For this goal, the number of casting techniques and further treatments were developed. Among the continuous casting techniques, which allow producing long strips of the alloys, is twin-roll casting. Using this process one can get the magnesium alloy with finest microstructure and higher specific strength. In this paper the comparison of tensile properties of conventionally cast and twin-roll cast AZ31 magnesium alloys was made. Tensile tests were carried out with constant strain rate 10-3 s-1 at temperatures ranging from 100 to 300 °C. Both materials were tested in as-cast state and after homogenization treatment at 450 °C for 10 hours. The investigation showed that there are no significant changes in ductility of AZ31 conventionally cast alloy even after heat treatment, while the ductility of twin-roll cast alloy increases.
Authors and Affiliations
Mariia Zimina, Premysl Malek, Jan Bohlen, Dietmar Letzig, Gerrit Kurz, Miroslav Cieslar
Keywords
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