Synthesis and Characterization of Al 7014 Nanostructure by Mechanical Alloying

Aluminum and its alloys due to favorable properties such as low density and high strength to weight ratio، have found many applications in industries، particularly the automotive and aerospace. In this study، the production process of aluminum alloy 7014 using mechanical alloying in a high energy planetary mill، at a weight ratio of powder to bullet 1:20، under argon atmosphere was investigated. According to the XRD results and XRY-MAP images and also the changes in lattice parameter، with increasing milling time gradually aluminum solid solution containing zinc and magnesium elements was created and aluminum alloy 7014 after a three-hour milling established. Also، effect of milling time on crystalline size، was investigated by milling at different times (4، 6، 8، 10، 15، 20 and 25 h). finally، the crystalline size of about 11 nm was reported on 15 hours of milling. Also the Alloy hardness value increased with increasing milling time، so 130 Vickers was reported after 15 hours of the milling.