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Wear behavior of Al_(0.6)CoCrFeNi high-entropy alloys: Effect of environments

机译：Al_（0.6）CoCrFeNi高熵合金的磨损行为：环境的影响

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摘要

Environment can impact the wear behavior of metals and alloys substantially. The tribological properties of Al0.6CoCrFeNi high-entropy alloys (HEAs) were investigated in ambient air, deionized water, simulated acid rain, and simulated seawater conditions at frequencies of 2-5 Hz. The as-cast alloy was composed of simple face-centered cubic and body-centered cubic phases. The wear rate of the as-cast HEA in the ambient air condition was significantly higher than that in the liquid environment. The wear resistance in seawater was superior to that in ambient air, deionized water, and acid rain. Both the friction coefficient and wear rate in seawater were the lowest due to the formation of oxidation film, lubrication, and corrosion action in solution. The dominant wear mechanism in the ambient air condition and deionized water was abrasive wear, delamination wear, and oxidative wear. By contrast, the wear mechanism in acid rain and seawater was mainly corrosion wear, adhesive wear, abrasive wear, and oxidative wear.
机译：环境会严重影响金属和合金的磨损行为。在环境空气，去离子水，模拟酸雨和模拟海水条件下（频率为2-5 Hz）研究了Al0.6CoCrFeNi高熵合金（HEA）的摩擦学性能。铸态合金由简单的面心立方相和体心立方相组成。铸态HEA在环境空气条件下的磨损率显着高于液态环境。海水中的耐磨性优于环境空气，去离子水和酸雨中的耐磨性。由于氧化膜的形成，润滑和溶液中的腐蚀作用，海水中的摩擦系数和磨损率最低。在环境空气和去离子水中的主要磨损机理是磨料磨损，分层磨损和氧化磨损。相比之下，酸雨和海水中的磨损机理主要是腐蚀磨损，粘着磨损，磨料磨损和氧化磨损。

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  • 来源
    《Journal of Materials Research》 |2018年第19期|3310-3320|共11页
  • 作者

    Chen Ming; Shi Xiao Hui; Yang Huijun; Liaw Peter K.; Gao Michael C.; Hawk Jeffrey A.; Qiao Junwei;

  • 作者单位

    Taiyuan Univ Technol, Coll Mat Sci & Engn, Lab High Entropy Alloys, Taiyuan 030024, Shanxi, Peoples R China;

    Taiyuan Univ Technol, Coll Mat Sci & Engn, Lab High Entropy Alloys, Taiyuan 030024, Shanxi, Peoples R China;

    Taiyuan Univ Technol, Coll Mat Sci & Engn, Lab High Entropy Alloys, Taiyuan 030024, Shanxi, Peoples R China|Taiyuan Univ Technol, Key Lab Interface Sci & Engn Adv Mat, Minist Educ, Taiyuan 030024, Shanxi, Peoples R China;

    Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA;

    Natl Energy Technol Lab, Albany, OR 97321 USA|AECOM, Albany, OR 97321 USA;

    Natl Energy Technol Lab, Albany, OR 97321 USA;

    Taiyuan Univ Technol, Coll Mat Sci & Engn, Lab High Entropy Alloys, Taiyuan 030024, Shanxi, Peoples R China|Taiyuan Univ Technol, Key Lab Interface Sci & Engn Adv Mat, Minist Educ, Taiyuan 030024, Shanxi, Peoples R China;

  • 收录信息 美国《科学引文索引》(SCI);美国《工程索引》(EI);美国《生物学医学文摘》(MEDLINE);
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