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Influence of Mg Content on Deformability of AlMg Alloys during Extrusion

Leśniak D., Dziki M., Zasadziński J., Libura W.

Archives of Metallurgy and Materials

2016

Vol. 61, iss. 1

85--92

In this study the research on deformability of AlMg alloys with high Mg contents in extrusion was carried out. The different shapes from AlMg alloys containing 3.5%, 4.5% and 5.5% of Mg were extruded on 500 T semi-industrial press by using one-hole and multi-hole flat dies. The extrudates surface quality was under investigations in relation with the temperature-speed parameters of the extrusion process. The metal exit speed was estimated depending on the extrudates shape, wall thickness and Mg content. The alloy’s border solidus and liquidus temperatures were also determined.