eng Science and Education Publishing Materials Science and Metallurgy Engineering 2013-10-21 1 1 27 30 10.12691/msme-1-2-3 MSME2013123 article Abul Hossain 1 ASW Kurny aswkurny@mme.buet.ac.bd 1 Department of Materials and Metallurgical Engineering, Bangladesh University of Engineering and Technology, Dhaka, Bangladesh Effects of strain rates on tensile properties and fracture behavior of Al-6Si-0.5Mg alloy containing 0.5 – 4 wt% Cu were studied. The solution treated alloys, containing different amounts of Cu, were aged isochronally for 1 hour at temperatures up to 300°C. Tensile strengths were found to increase with ageing temperature, the maximum being attained at peak aged condition (1 hr at 225°C). Addition of Cu resulted in an increase in tensile strength and 2 wt% Cu addition showed the maximum strength. Evaluation of tensile properties at three different strain rates (10^-4, 10^-3 and 10^-2 s^-1) showed that strain rates affected the tensile properties significantly. At higher strain rates the strength was better but ductility was poor. http://pubs.sciepub.com/msme/1/2/3/msme-1-2-3.pdf Al-6Si-05Mg alloy precipitation hardening tensile properties strain rate