Materials Research Express (Jan 2021)

Energy absorption within elastic range for AZ31 magnesium alloy

  • Yongbiao Yang,
  • TingYan Zhang,
  • Jinxuan Guo,
  • Zhimin Zhang,
  • Qiang Wang,
  • Guojun Li

DOI
https://doi.org/10.1088/2053-1591/ac3104
Journal volume & issue
Vol. 8, no. 10
p. 106522

Abstract

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Energy absorption for AZ31 magnesium Alloy was investigated with Split Hopkinson Pressure Bar using single stress wave so as to avoid multiple stress wave loading. The stress wave amplitude, which was in elastic stress range and propagated along the AZ31 magnesium bar, was reduced with increasing propagating distance, and with increasing stress wave amplitude, the stress wave amplitude reduction along the magnesium bar was increased losing more energy as compared with that of the stress wave with lower amplitude. The drastically decreased stress wave amplitude could be explained based on dislocations movements, which was similar to the established theory of damping for the explanation of the energy loss during cyclic loading. However, it was not the case for LY12 aluminum alloy: the stress wave amplitude changed slightly without drastic energy loss regardless of the variation of stress wave amplitude.

Keywords