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Abstract <p>A low melting Zn–4.3Al–0.5Zr alloy modifier was prepared and applied for the modification of ZZnAl4Y alloy. The microstructure and mechanical properties of ZZnAl4Y alloy before and after modification were analyzed using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The results show that the Zn–4.3Al–0.5Zr alloy consists of η-Zn phase, ternary T&#xa0;phase, Al<sub>3</sub>Zr phase, and Zn–Al binary eutectic structure. With the increase of adding amount of Zn–4.3Al–0.5Zr alloy modifier and modification temperature, the size of the primary η-Zn phase in ZZnAl4Y alloy initially decreases and then increases. Additionally, as the mold temperature increases, the size and area fraction of primary η-Zn phase and the lamellar spacing of the eutectic structure in modified ZZnAl4Y alloy continuously increase. ZZnAl4Y alloy achieves the best mechanical properties after modifying at 450°C with 10 wt % Zn–4.3Al–0.5Zr and, then, being solidified within room temperature mold.</p>

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Study on Microstructure and Mechanical Properties of ZZnAl4Y Alloy Modified with Low Melting Modifier

  • 期刊论文

  • 发表日期：

    2025年7月1日

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  • Shuailong Ding,
  • Jianhua Wang,
  • Ya Liu,
  • Junxiu Chen,
  • Xiangying Zhu

摘要

Abstract

A low melting Zn–4.3Al–0.5Zr alloy modifier was prepared and applied for the modification of ZZnAl4Y alloy. The microstructure and mechanical properties of ZZnAl4Y alloy before and after modification were analyzed using scanning electron microscopy (SEM), energy-dispersive spectroscopy (EDS), and X-ray diffraction (XRD). The results show that the Zn–4.3Al–0.5Zr alloy consists of η-Zn phase, ternary T phase, Al3Zr phase, and Zn–Al binary eutectic structure. With the increase of adding amount of Zn–4.3Al–0.5Zr alloy modifier and modification temperature, the size of the primary η-Zn phase in ZZnAl4Y alloy initially decreases and then increases. Additionally, as the mold temperature increases, the size and area fraction of primary η-Zn phase and the lamellar spacing of the eutectic structure in modified ZZnAl4Y alloy continuously increase. ZZnAl4Y alloy achieves the best mechanical properties after modifying at 450°C with 10 wt % Zn–4.3Al–0.5Zr and, then, being solidified within room temperature mold.