Soften Behavior of 7050 Aluminum Alloy during High Temperature Compression Deformation
Soften behavior of 7050 aluminum alloy was investigated by high temperature compression tests conducted at 460 °C with different strain rates of 0.1, 1, 10 and 100 s-1. The results show that all the volume fractions of recrystallized grain and substructed grain of the 7050 aluminum alloy deformed at 460 °C with different strain rates are higher than 35% and 20%, respectively. Dynamic recovery and dynamic recrystallization are primary soften mechanism of the 7050 aluminum alloy deformation at 460 °C, which is not sensitive to strain rate. The recryatallization nucleation mechanisms of the 7050 aluminum alloy deformed at 460 °C include in grain boundary arch, subgrain growth and subgrain merging.
Yongping Zhang, Linhua Zhou and Elwin Mao
H. Hu et al., "Soften Behavior of 7050 Aluminum Alloy during High Temperature Compression Deformation", Applied Mechanics and Materials, Vol. 109, pp. 161-164, 2012