Constitutive Analysis and Hot Deformation Behavior of Homogenized Al-3Mg Alloy

Determining the hot deformation behavior of various metals and alloys in relation to dynamic recrystallization has always been of particular interest. Hence, various methods have been proposed to determine the progress of dynamic recrystallization during deformation. In the present study, the hot deformation behavior of Al-3 Mg alloy was studied by the hot compression test because the stress-strain diagrams of the subjected material are directly affected by temperature and strain rate parameters. Strain rates ranging from 0.5 s(-1) to 4 s(-1), and temperatures ranging from 350 to 550 degrees C were selected for investigations. True stress-strain curves were used to indicate the occurrence of dynamic recrystallization, and constitutive equations were used to determine the hot working constants of the alloy. The material's constant coefficients, namely alpha, n, Q, and A, were determined using regression analysis. The effect of the Zener-Hollomon (Z) parameter on the specific points of flow curves was investigated using empirical relationships. Finally, the dynamic recrystallization kinetics of Al-3 Mg alloy were studied to extract the relationships governing the hot deformation behavior. The conclusion was that the suggested equations predict the constitutive relations with reasonable accuracy.