PHYSICAL MODELLING OF PLASTIC DEFORMATION CONDITIONS FOR THE ROLLING PROCES OF AZ31 BARS IN A THREE HIGH SKEW ROLLING MILL

The article presents results of the research concerning the physical modeling of plastic working of AZ31 magnesium alloy using two research methods. These studies were conducted using a metallurgical process simulator and tor-sional plastometer. The research was done for temperature range 200 ÷ 400 °C and strain rate from 0,1 to 20,0 s-1, depending on the testing method. The results allow to determine the coefficients in yield equation needed for the numerical research. Moreover the most advantageous temperature- velocity conditions to realize the process of bars rolling in three high skew rolling mill can be determined. Key words: magnesium alloys, rods, physical modeling, plastometric tests, torsion test