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不同熔覆参数下的AlFeCrCoNiTi高熵合金涂层的高温摩擦磨损性能

崔少伟 王树奇 姜伟 刘喜艳

崔少伟, 王树奇, 姜伟, 刘喜艳. 不同熔覆参数下的AlFeCrCoNiTi高熵合金涂层的高温摩擦磨损性能[J]. 钢铁钒钛, 2021, 42(3): 155-161, 192. doi: 10.7513/j.issn.1004-7638.2021.03.024
引用本文: 崔少伟, 王树奇, 姜伟, 刘喜艳. 不同熔覆参数下的AlFeCrCoNiTi高熵合金涂层的高温摩擦磨损性能[J]. 钢铁钒钛, 2021, 42(3): 155-161, 192. doi: 10.7513/j.issn.1004-7638.2021.03.024
Cui Shaowei, Wang Shuqi, Jiang Wei, Liu Xiyan. High-temperature tribological properties of AlFeCrCoNiTi high-entropy alloy coatings laser cladded with different parameters[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 155-161, 192. doi: 10.7513/j.issn.1004-7638.2021.03.024
Citation: Cui Shaowei, Wang Shuqi, Jiang Wei, Liu Xiyan. High-temperature tribological properties of AlFeCrCoNiTi high-entropy alloy coatings laser cladded with different parameters[J]. IRON STEEL VANADIUM TITANIUM, 2021, 42(3): 155-161, 192. doi: 10.7513/j.issn.1004-7638.2021.03.024

不同熔覆参数下的AlFeCrCoNiTi高熵合金涂层的高温摩擦磨损性能

doi: 10.7513/j.issn.1004-7638.2021.03.024
详细信息
  • 中图分类号: TF76,TG174.44

High-temperature tribological properties of AlFeCrCoNiTi high-entropy alloy coatings laser cladded with different parameters

  • 摘要: 选取H13钢进行激光熔覆,获得激光熔覆涂层,并进行了微观组织和硬度分析。采用销—盘式高温磨损试验机研究了H13钢及各个涂层的高温磨损行为。采用SEM、EDS以及XRD等微观分析手段对各个涂层上的磨面进行形貌、成分及物相分析,并探讨磨损机理。结果表明:不论温度的高低与载荷的大小,激光熔覆涂层的磨损量都比H13钢的磨损量低一个数量级。400 ℃下,涂层的磨损失重速度高于涂层的氧化增重速度,因此,涂层整体呈现失重的趋势;600 ℃下,涂层的磨损失重速度低于涂层的氧化增重速度,因此,涂层整体呈现增重的趋势。涂层1具有最好的抗高温软化能力,不论在400 ℃还是600 ℃下摩擦层表面都可以保持完整。涂层2的抗高温软化能力最弱。在400 ℃下,在载荷仅为50 N时就出现摩擦层表面大面积剥落;在600 ℃下,其挤出程度较其他两个摩擦层更为严重。涂层3的抗高温软化能力弱于涂层1的但高于涂层2。在400 ℃,下低载时,摩擦层保持完整,高载时,摩擦层发生大面积剥落;在600 ℃下,其挤出程度较为严重但轻于涂层2。
  • 图  1  激光熔覆涂层的宏观形貌

    Figure  1.  Macro morphology of laser cladding coating

    图  2  熔覆层(a)与结合区(b)的金相图

    Figure  2.  Metallographic diagram of laser cladding layer (a) and interfacial layer (b)

    图  3  激光熔覆涂层的XRD图谱

    Figure  3.  XRD patterns of laser cladding coating

    图  4  H13钢未加涂层与涂层在不同载荷与温度下磨损后质量变化

    Figure  4.  Mass change of H13 cteel with no coating and coatings after wear under different load and temperature

    图  5  摩擦层与未磨损区交界区域的微观形貌

    Figure  5.  Micro morphology of the interface between friction layers and unworn areas

    图  6  各涂层上摩擦层的微观形貌

    Figure  6.  Micro morphology of friction layers on each coating

    图  7  摩擦层边缘的缺口

    Figure  7.  Gap on the edge of the friction layer

    表  1  H13钢的化学成分

    Table  1.   Chemical compositions of H13 steel %

    CSiCrMnVMoSPFe
    0.421.045.150.430.901.45≤0.030≤0.030余量
    下载: 导出CSV

    表  2  合金粉末的化学成分

    Table  2.   Chemical compositions of coating powders %

    AlFeCrCoNiTi
    9.018.617.319.619.615.9
    下载: 导出CSV

    表  3  激光熔覆工艺参数

    Table  3.   Laser cladding process parameters

    参数编号激光功率/W扫描速度/(mm·s−1)光斑直径/mm送粉速度/(g·min−1)搭接率/%气流量/(L·min−1)
    11600548.575010
    21600545.723010
    31600545.725010
    下载: 导出CSV

    表  4  磨损试验参数

    Table  4.   Tribological experiment parameters

    温度/˚C载荷/N力矩/(N·m)转速/(r·min−1)时间/min
    400、60050、100、150550120
    下载: 导出CSV

    表  5  涂层及基体硬度

    Table  5.   Hardness of coating and substrate

    涂层硬度 (HRC)
    退火前熔覆层退火后熔覆层基体
    151.749.324.3
    248.146.323.9
    346.546.122.5
    下载: 导出CSV
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出版历程
  • 收稿日期:  2020-12-16
  • 刊出日期:  2021-06-10

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