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Abstract <p>This study systematically investigated the effects of rolling deformation on the microstructure, mechanical properties, and corrosion resistance of Zn–1Mg–1Cu alloy. Alloy samples were prepared through melting, heat treatment, and rolling with varying deformation levels (60, 70, 85%). Microstructural characterization was conducted using optical microscopy (OM), scanning electron microscopy (SEM), X‑ray diffraction (XRD), and transmission electron microscopy (TEM). Mechanical and corrosion properties were evaluated through tensile testing, electrochemical measurements, and in vitro immersion experiments. Results demonstrated that increased rolling deformation significantly refined grains, fragmented and homogeneously distributed Mg<sub>2</sub>Zn<sub>11</sub> phase, while promoting Cu dissolution into the matrix. As deformation rose from 60 to 85%, mechanical properties markedly improved, with the 85%-deformed sample exhibiting optimal performance: tensile strength (297 MPa), yield strength (295 MPa), and elongation (11.3%). Electrochemical tests revealed the lowest corrosion current density (0.085 μA cm<sup>–2</sup>) and corrosion rate (1.31&#xa0;μm year<sup>–1</sup>) for the 85%-deformed alloy. Immersion experiments further confirmed its superior corrosion resistance (corrosion rate: 12.72 μm year<sup>–1</sup>). The research demonstrates that increased rolling deformation enhances both mechanical properties and corrosion resistance through grain refinement strengthening and dispersion strengthening mechanisms, providing theoretical guidance for processing optimization of biodegradable zinc alloys in biomedical applications.</p>

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Effects of Rolling Deformation on the Mechanical Property and Corrosion Resistance of Biodegradable Zn–1Mg–1Cu Alloy

  • 期刊论文

  • 发表日期：

    2025年12月1日

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  • Chiheng Du,
  • Junxiu Chen,
  • Jianheng Sun,
  • Ya Liu,
  • Xiangying Zhu,
  • Jinwei Wang,
  • Yangfang Zhan,
  • Xuping Su

摘要

Abstract

This study systematically investigated the effects of rolling deformation on the microstructure, mechanical properties, and corrosion resistance of Zn–1Mg–1Cu alloy. Alloy samples were prepared through melting, heat treatment, and rolling with varying deformation levels (60, 70, 85%). Microstructural characterization was conducted using optical microscopy (OM), scanning electron microscopy (SEM), X‑ray diffraction (XRD), and transmission electron microscopy (TEM). Mechanical and corrosion properties were evaluated through tensile testing, electrochemical measurements, and in vitro immersion experiments. Results demonstrated that increased rolling deformation significantly refined grains, fragmented and homogeneously distributed Mg2Zn11 phase, while promoting Cu dissolution into the matrix. As deformation rose from 60 to 85%, mechanical properties markedly improved, with the 85%-deformed sample exhibiting optimal performance: tensile strength (297 MPa), yield strength (295 MPa), and elongation (11.3%). Electrochemical tests revealed the lowest corrosion current density (0.085 μA cm–2) and corrosion rate (1.31 μm year–1) for the 85%-deformed alloy. Immersion experiments further confirmed its superior corrosion resistance (corrosion rate: 12.72 μm year–1). The research demonstrates that increased rolling deformation enhances both mechanical properties and corrosion resistance through grain refinement strengthening and dispersion strengthening mechanisms, providing theoretical guidance for processing optimization of biodegradable zinc alloys in biomedical applications.