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<p>This study investigates the effect of heat treatment on the mechanical and corrosion behavior of a Mg-1Er-1Pr alloy. Microstructural and microhardness measurements were executed to assess the mechanical properties. In addition, potentiodynamic polarization and immersion corrosion tests were conducted to assess the corrosion behavior of the as-cast and heat-treated samples. The results show that employing heat-treated samples leads to substantial grain refinement in the specimen due to the aging temperature and quenching process. EBSD results denoted that the base material average grain size is ~ 243&#xa0;µm, and the heat-treated samples with increased average grain size are HT1 (~372.50&#xa0;µm), HT2 (~774.26&#xa0;µm), and HT3 (~840.17&#xa0;µm). The microhardness of the heat-treated material was heightened compared to the base material due to dislocations and precipitates in the grain boundaries. The corrosion behavior of the heat-treated samples showed evolved corrosion resistance compared to the as-cast. Specimens of HT1 showed a lower anode consumption rate and a higher sacrificial anode efficiency of 33.60% in a marine environment. Hence, the results denote that heat-treated specimens significantly enhance the mechanical and corrosion properties of the alloy.</p>

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Effect of Heat Treatment on the Microstructure, Texture, and Sacrificial Anodic Performance of Mg-1Er-1Pr Alloy

  • 期刊论文

  • 发表日期：

    2026年4月25日

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  • Selvakumar Duraisamy,
  • Sathiya Paulraj,
  • Vaira Vignesh Ramalingam

摘要

This study investigates the effect of heat treatment on the mechanical and corrosion behavior of a Mg-1Er-1Pr alloy. Microstructural and microhardness measurements were executed to assess the mechanical properties. In addition, potentiodynamic polarization and immersion corrosion tests were conducted to assess the corrosion behavior of the as-cast and heat-treated samples. The results show that employing heat-treated samples leads to substantial grain refinement in the specimen due to the aging temperature and quenching process. EBSD results denoted that the base material average grain size is ~ 243 µm, and the heat-treated samples with increased average grain size are HT1 (~372.50 µm), HT2 (~774.26 µm), and HT3 (~840.17 µm). The microhardness of the heat-treated material was heightened compared to the base material due to dislocations and precipitates in the grain boundaries. The corrosion behavior of the heat-treated samples showed evolved corrosion resistance compared to the as-cast. Specimens of HT1 showed a lower anode consumption rate and a higher sacrificial anode efficiency of 33.60% in a marine environment. Hence, the results denote that heat-treated specimens significantly enhance the mechanical and corrosion properties of the alloy.