Scholarlink

<p>The influence of heat treatment on the microstructure and corrosion behavior of Al<sub>0.3</sub>Co<sub>0.25</sub>CrFeNi high entropy alloy were comprehensively investigated. The results demonstrate that the increased temperature of heat treatment from 500 to 1200&#xa0;°C induces the phase transition from a double-phase (FCC + BCC) structure to a single-phase FCC structure, thereby enhancing the corrosion resistance of alloy due to the redissolution of interdendritic structures. However, the precipitation of (Al, Ni)-rich L1<sub>2</sub> ordered phase after heat treatment at 800&#xa0;°C deteriorates corrosion resistance. Selective corrosion of the (Al, Ni)-rich phases dominates the localized corrosion mechanism in heat-treated Al<sub>0.3</sub>Co<sub>0.25</sub>CrFeNi high-entropy alloy.</p>

错误：搜索内容不能为空，请输入英文关键词
错误：关键词超出字数限制，请精简
高级检索

Effect of Heat Treatment on Microstructure and Corrosion Behavior of Al0.3Co0.25CrFeNi High Entropy Alloys

  • 期刊论文

  • 发表日期：

    2025年11月6日

查看全文
  • Zequn Zhang,
  • Shujie He,
  • Guoqing Duan,
  • Haibo Zhou,
  • Qijuan Dong,
  • Bowei Zhang,
  • Yageng Li,
  • Junsheng Wu

摘要

The influence of heat treatment on the microstructure and corrosion behavior of Al0.3Co0.25CrFeNi high entropy alloy were comprehensively investigated. The results demonstrate that the increased temperature of heat treatment from 500 to 1200 °C induces the phase transition from a double-phase (FCC + BCC) structure to a single-phase FCC structure, thereby enhancing the corrosion resistance of alloy due to the redissolution of interdendritic structures. However, the precipitation of (Al, Ni)-rich L12 ordered phase after heat treatment at 800 °C deteriorates corrosion resistance. Selective corrosion of the (Al, Ni)-rich phases dominates the localized corrosion mechanism in heat-treated Al0.3Co0.25CrFeNi high-entropy alloy.