Hot tensile deformation mechanism and constitutive equation of AZ61Ce magnesium alloy sheets

Constitutive Equation and Hot Processing Map of Mg-16Al Magnesium Alloy Bars

“…Similarly, the nucleation and growth time of recrystallized grains was also insufficient, which was unfavorable for the occurrence of DRX. The critical stress values for DRX of the Mg-16Al Mg alloy were lower than that of other AZ-based Mg alloys [16,17], indicating that several Mg 17 Al 12 phases hindered grain boundary migration. The consequent grain growth inhibition yielded uniform and fine grains.…”

“…The critical stress values for DRX of the Mg-16Al Mg alloy were lower than that of other AZ-based Mg alloys [ 16 , 17 ], indicating that several Mg 17 Al 12 phases hindered grain boundary migration. The consequent grain growth inhibition yielded uniform and fine grains.…”

“…Univariate linear regression was performed on the ε c versus peak strain (ε p ) curves of the Mg-16Al Mg alloy (see Figure 15b for the linear relationship). The linear regression results of the ε c -ε p curves can be described by Equation (17), which showed that DRX occurred before the peak strain was reached. ε c = 1.32 × 10 −4 Z 0.18643 ( 16)…”

“…Mg-16Al Mg alloy (see Figure 15b for the linear relationship). The linear regression results of the εc-εp curves can be described by Equation (17), which showed that DRX occurred before the peak strain was reached.…”

“…The Sellars model [ 14 ] is a prediction model based on the Poliak–Jonas criterion, where the influence of temperature (T) and strain rate ( έ ) is considered, and the Zener–Hollomon ( Z ) parameter is used to obtain the ε c of DRX. The Sellars models of Mg-11.95Gd-4.5Y-2Zn-0.37Zr, AZ80, and AZ61 alloys were established by Yu [ 15 ], Su [ 16 ], and Wei [ 17 ], respectively.…”