Rheological Behavior of Aluminum Alloy in Hot Compression Based on Mathematical Model
The rheological behavior of the aluminum alloy 7N01 under different hot compression conditions was investigated, and the mathematical model of flow stress was established. The results show that the aluminum alloy 7N01,which is sensitive to positive strain rate, presents a steady-state rheological characteristic. The softening mechanism of the alloy is discontinuous dynamic recrystallization at high strain rate(10.00/s), and dynamic recover at low strain rate(below10.00/s). And the constitutive equation of flow stress for the alloy is σ=61.5ln {(Z/2.491E10)0.11+ [(Z/2.491E10)0.22+1]0.5}.