Plastic Work to Heat Conversion During High-Strain Rate Deformation of Mg and Mg Alloy

Magnesium and magnesium alloy were investigated for plastic work to heat conversion (β). Thermomechanical response was measured employing the shear-compression specimen geometry, a split-Hopkinson pressure bar, and an infra-red detector. β of both materials measured to be less than the common assumption of 0.9; however, heat conversion was observed to be greater for magnesium alloy. Thus, results suggest that alloying and grain size refinement not only improved yield strength but also affected the thermomechanical response