Mechanical Behavior and Microstructure Evolution during High-Temperature Tensile Deformation of MnE21 Magnesium Alloy

In this study, tensile tests for magnesium–manganese rare earth alloy (MnE21) were conducted with a WDW-300 high-temperature universal testing machine at different temperatures (300 °C~500 °C) and strain rates (1 × 10−4s−1~1 10−1s−1). The high temperature thermal deformation behavior, dynamic recrystallization, texture of MnE21 magnesium analyzed by combining the constitutive equation, hot processing map, electron backscatter diffraction (EBSD). results show that compensation equation can accurately predict behavior. According to optimal regions determined be 350 °C, ε˙= 1 10−2s−1~ε˙= 10−4s−1, 450–500 ε ˙= 10−1s−1~ε˙= 10−4s−1. Based on EBSD analysis, it was found recrystallization occurs above concluded more adequate 450 °C analyzing grain orientation boundary difference distribution. addition, index also material showed typical extrusion internally. During (01-11) [2-1-11], produced.