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<p>This paper studies the microstructure and cavitation erosion resistance of the AlCoCrFeNi<sub>2.1</sub>Mo<sub>x</sub> (<i>x </i>= 0,0.3) high-entropy alloys (HEAs). Results indicated that the AlCoCrFeNi<sub>2.1</sub> alloy exhibits a FCC + B2 dual-phase eutectic microstructure, while the AlCoCrFeNi<sub>2.1</sub>Mo<sub>0.3</sub> alloy has a bimodal eutectic microstructures. Under the combined of solution strengthening and precipitation strengthening, the nanohardness of the AlCoCrFeNi<sub>2.1</sub>Mo<sub>0.3</sub> alloy increased by approximately 1.4 times compared to the AlCoCrFeNi<sub>2.1</sub> alloy. The corrosion resistance of the AlCoCrFeNi<sub>2.1</sub>Mo<sub>0.3</sub> alloy was improved compared to AlCoCrFeNi<sub>2.1</sub>, and the <i>i</i><sub>corr</sub> increased from 13.724&#xa0;nA&#xa0;cm<sup>−2</sup> in Mo0.3 to 24.195&#xa0;nA&#xa0;cm<sup>−2</sup> in Mo0, while the <i>E</i><sub>corr</sub> decreased from − 0.2042 <i>V</i><sub>SCE</sub> to − 0.2507 <i>V</i><sub>SCE.</sub> Remarkably, AlCoCrFeNi<sub>2.1</sub>Mo<sub>0.3</sub> resistance to CE-C better than AlCoCrFeNi<sub>2.1</sub> attributed to the outstanding corrosion resistance and mechanical properties which could withstand elastic strain damage and plastic deformation.</p>

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Mechanical behavior and cavitation erosion-corrosion resistance of AlCoCrFeNi2.1Mox (x = 0 and 0.3) eutectic high-entropy alloys

  • 期刊论文

  • 发表日期：

    2026年3月10日

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  • Wenlong Xie,
  • Hui Jiang,
  • Liang Ning,
  • Zhiyong Wang,
  • Yuting Lv,
  • Da Zhang

摘要

This paper studies the microstructure and cavitation erosion resistance of the AlCoCrFeNi2.1Mox (x = 0,0.3) high-entropy alloys (HEAs). Results indicated that the AlCoCrFeNi2.1 alloy exhibits a FCC + B2 dual-phase eutectic microstructure, while the AlCoCrFeNi2.1Mo0.3 alloy has a bimodal eutectic microstructures. Under the combined of solution strengthening and precipitation strengthening, the nanohardness of the AlCoCrFeNi2.1Mo0.3 alloy increased by approximately 1.4 times compared to the AlCoCrFeNi2.1 alloy. The corrosion resistance of the AlCoCrFeNi2.1Mo0.3 alloy was improved compared to AlCoCrFeNi2.1, and the icorr increased from 13.724 nA cm−2 in Mo0.3 to 24.195 nA cm−2 in Mo0, while the Ecorr decreased from − 0.2042 VSCE to − 0.2507 VSCE. Remarkably, AlCoCrFeNi2.1Mo0.3 resistance to CE-C better than AlCoCrFeNi2.1 attributed to the outstanding corrosion resistance and mechanical properties which could withstand elastic strain damage and plastic deformation.