The influences of the expansion equal channel angular extrusion operation on the strength and ductility of AZ80 magnesium alloy
作者： S. Sepahi-Boroujeni , F. Fereshteh-Saniee
DOI: 10.1016/J.MSEA.2015.03.073
关键词: Elongation 、 Magnesium alloy 、 Materials science 、 Grain size 、 Equal channel angular extrusion 、 Alloy 、 Indentation hardness 、 Ductility 、 Metallurgy 、 Severe plastic deformation
摘要: Abstract The as-cast AZ80 magnesium alloy was processed through the expansion equal channel angular extrusion (Exp-ECAE) operation. process conducted with various test conditions by varying temperature, ram velocity and number of passes. Then, mechanical microstructural characteristics product were investigated. grain size reduced 64% in component at 225 °C a 6 mm/min, while UTS, microhardness elongation showed, respectively, 2, 1.6 1.8 times improvements compared billet. possibility deforming Mg temperatures below 200 °C also examined. Finally, Exp-ECAE technique succeeded processing this 180 °C without applying any external back-pressure. Processing under such condition resulted 2.4 improvement strength, comparison
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