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<p>To investigate the effect of loading temperature on the adiabatic shear sensitivity of AZ31 magnesium alloy, high-speed impact experiments were conducted on AZ31 magnesium alloy extruded bars along both the extrusion direction (ED) and the extrusion radial direction (ERD) within the temperature range of room temperature to 400&#xa0;°C. The microstructure after deformation was observed and analyzed by optical microscope (OM). The results show that the increase of temperature weakens the mechanical anisotropy of the material. At low temperature, no adiabatic shear band (ASB) was formed. With the increase of temperature, the ASB is formed and developed more fully, the crack length is also increased, and the formation of shear band is advanced. Comprehensive analysis of mechanical response and microstructure evolution shows that the adiabatic shear sensitivity of AZ31 magnesium alloy increases significantly with the increase of deformation temperature.</p>

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Effect of Temperature on Adiabatic Shear Sensitivity of AZ31 Magnesium Alloy

  • 期刊论文

  • 发表日期：

    2026年7月31日

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  • Haitang Huang,
  • Pingli Mao,
  • Chao Yao,
  • Haowei Yi,
  • Ziqi Wei

摘要

To investigate the effect of loading temperature on the adiabatic shear sensitivity of AZ31 magnesium alloy, high-speed impact experiments were conducted on AZ31 magnesium alloy extruded bars along both the extrusion direction (ED) and the extrusion radial direction (ERD) within the temperature range of room temperature to 400 °C. The microstructure after deformation was observed and analyzed by optical microscope (OM). The results show that the increase of temperature weakens the mechanical anisotropy of the material. At low temperature, no adiabatic shear band (ASB) was formed. With the increase of temperature, the ASB is formed and developed more fully, the crack length is also increased, and the formation of shear band is advanced. Comprehensive analysis of mechanical response and microstructure evolution shows that the adiabatic shear sensitivity of AZ31 magnesium alloy increases significantly with the increase of deformation temperature.