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<p>The anisotropic behavior of ZK60 alloy remains underexplored under dynamic loading. This study investigates its dynamic anisotropic characteristics to guide the design of high-performance magnesium alloys and broaden their engineering applications. Experimental results indicate that the optimal aging treatment time for extruded ZK60 alloy at 180&#xa0;°C is 16 h. Following aging treatment, a greater amount of small, round-shaped MgZn phases precipitate within the ZK60, while the larger MgZn<sub>2</sub> phase shows no significant changes. The yield strength and peak flow stress of the aged ZK60 alloy reach maximum values of 204 MPa and 716 MPa, respectively, at a strain rate of 2000 s<sup>−1</sup>. The alloys show anisotropy, when subjected to loads in different directions, the c-axis of grain is subjected to different stresses. ED samples are more prone to generating {10 <InlineEquation ID="IEq1"> <EquationSource Format="TEX">\(\overline{1 }\)</EquationSource> <EquationSource Format="MATHML"><math> <mover> <mn>1</mn> <mo>¯</mo> </mover> </math></EquationSource> </InlineEquation> 2} tensile twins under dynamic loading. The disparity in dynamic deformation mechanisms among samples subjected to loads from different directions constitutes the primary cause for the alloy's anisotropy. The exploration of the dynamic compression anisotropy mechanism of ZK60 provides the basic data for the safe application of this alloy in a wider range of scenarios.</p>

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Study on Anisotropy Behavior of Aged Extruded ZK60 Alloy

  • 期刊论文

  • 发表日期：

    2025年12月22日

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  • Chenkun Xu,
  • Zhi Wang,
  • Le Zhou,
  • Feng Wang,
  • Ziqi Wei,
  • Pingli Mao

摘要

The anisotropic behavior of ZK60 alloy remains underexplored under dynamic loading. This study investigates its dynamic anisotropic characteristics to guide the design of high-performance magnesium alloys and broaden their engineering applications. Experimental results indicate that the optimal aging treatment time for extruded ZK60 alloy at 180 °C is 16 h. Following aging treatment, a greater amount of small, round-shaped MgZn phases precipitate within the ZK60, while the larger MgZn2 phase shows no significant changes. The yield strength and peak flow stress of the aged ZK60 alloy reach maximum values of 204 MPa and 716 MPa, respectively, at a strain rate of 2000 s−1. The alloys show anisotropy, when subjected to loads in different directions, the c-axis of grain is subjected to different stresses. ED samples are more prone to generating {10 \(\overline{1 }\) 1 ¯ 2} tensile twins under dynamic loading. The disparity in dynamic deformation mechanisms among samples subjected to loads from different directions constitutes the primary cause for the alloy's anisotropy. The exploration of the dynamic compression anisotropy mechanism of ZK60 provides the basic data for the safe application of this alloy in a wider range of scenarios.