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<p>CoCrNi, as a typical medium-entropy alloy, has attracted widespread attention due to its excellent properties. However, segregation and uneven microstructure during smelting hinder its performance. Cold rolling and annealing are crucial processes to address these issues. This study explores the influence of cold-rolling deformation and annealing temperature on the microstructure and properties of CoCrNi medium-entropy alloy and finds the optimal processing technology for CoCrNi medium-entropy alloy. The results show that at the same annealing temperature, the greater the cold-rolling deformation, the higher the tensile strength of the sample, but the worse the plasticity. When the annealing temperature is from room temperature to 900&#xa0;°C, the strength and plasticity of CoCrNi are simultaneously improved. When the rolling deformation is 50% and the annealing temperature is 900&#xa0;°C, the comprehensive performance of CoCrNi medium-entropy alloy is optimal, providing experimental guidance for enhancing CoCrNi medium-entropy alloy properties.</p>

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Effects of Annealing on the Microstructure and Properties of Cold-Rolled CoCrNi Medium-Entropy Alloy

  • 期刊论文

  • 发表日期：

    2025年5月26日

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  • Lin Li,
  • Chaopeng Chen,
  • Gengjie Wang,
  • Kun Ma,
  • Haofeng Xie,
  • Wenjing Zhang

摘要

CoCrNi, as a typical medium-entropy alloy, has attracted widespread attention due to its excellent properties. However, segregation and uneven microstructure during smelting hinder its performance. Cold rolling and annealing are crucial processes to address these issues. This study explores the influence of cold-rolling deformation and annealing temperature on the microstructure and properties of CoCrNi medium-entropy alloy and finds the optimal processing technology for CoCrNi medium-entropy alloy. The results show that at the same annealing temperature, the greater the cold-rolling deformation, the higher the tensile strength of the sample, but the worse the plasticity. When the annealing temperature is from room temperature to 900 °C, the strength and plasticity of CoCrNi are simultaneously improved. When the rolling deformation is 50% and the annealing temperature is 900 °C, the comprehensive performance of CoCrNi medium-entropy alloy is optimal, providing experimental guidance for enhancing CoCrNi medium-entropy alloy properties.