Effect of Y on the Structure and Erosion Wear of Laser-Cladding FeCoCrNi Coating on Bearing Steel
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摘要: 以激光熔覆方法在轴承钢上制得FeCoCrNi-xY高熵合金涂层，并对其处于气体环境中的耐高温冲蚀性进行了测试。研究Y对涂层结构和冲蚀磨损的影响。研究结果表明：随着Y增大，蜂窝形组织开始减少直到全部消失，生成了许多尺寸较小的M颗粒，形成了粒径更小以及分布形态更均匀的Y化物组织。提高Y的加入量后，涂层发生了硬度先减小再增大势，测试得到的硬度值介于720-960 HV范围内。当逐渐提高冲蚀角后，FeCoCrNi-xY涂层发生了冲蚀磨损率持续增大。FeCoCrNixY涂层获得了高于轴承钢的硬度，呈现明显的脆性特点。对FeCoCrNi-0.3Y涂层冲蚀形成了深度更大的犁沟，达到了更高的冲蚀磨损率。当温度提高后，磨损率同样呈现增大现象，不过变化幅度较低。各攻角下的涂层磨损形式并未受到温度的明显影响。
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关键词:
- FeCoCrNi-Y涂层 /
- 激光熔覆 /
- 微观组织 /
- 冲蚀磨损
Abstract: The FeCoCrNi-xY high-entropy alloy coating was prepared on bearing steel by laser cladding method,and its high-temperature erosion resistance in a gas environment was tested. The effect of Y on coating structure and erosion wear was studied. The results show that with the increase of Y,the honeycomb structure begins to decrease until it disappears completely,and many small-size M particles are generated,forming a Y-compound structure with smaller particle size and more uniform distribution. After increasing the amount of Y,the hardness of the coating first decreases and then increases,and the hardness measured is in the range of 720-960 HV. When the erosion angle is gradually increased,the erosion wear rate of the FeCoCrNi-xY coating continues to increase. The FeCoCrNi-xY coating obtains a higher hardness than the bearing steel,showing obvious brittleness. The erosion of the FeCoCrNi-0.3Y coating forms deeper furrows and achieves a higher erosion wear rate. When the temperature increases,the wear rate also increases,but the change range is lower. The wear pattern of coating at various angles of attack was not affected by temperature.-
Keywords:
- FeCoCrNi-Y coating /
- Laser cladding /
- Microstructure /
- Erosion wear
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[1] 黄顺友,上官晓峰,陈建,等.Mo(0.2)FeCoCrNi高熵合金定向凝固枝晶分裂与取向偏转[J].西安工业大学学报,2019,39(01):65-71 [2] SHAHMIR H,NILI-AHMADABADI M,SHAFIEE A,et al.Effect of a Minor Titanium Addition on the Superplastic Properties of a CoCrFeNiMn High-Entropy Alloy Processed by High-Pressure Torsion[J].Materials science and engineering:A,2018,718:468-476
[3] NAIR R B,ARORA H S,MUKHERJEE S,et al.Exceptionally High Cavitation Erosion and Corrosion Resistance of a High Entropy Alloy[J].Ultrasonics Sonochemistry,2018,41:252-260
[4] 董世知,孟旭,马壮,等.粉煤灰活性氩弧熔覆FexAlCoCrCuTi(0.3)高熵合金涂层的组织和冲蚀磨损性能[J].材料保护,2018,51(08):90-94 [5] LIN D Y,ZHANG N N,HE B,et al.Tribological Properties of FeCoCrNiAlBx High-Entropy Alloys Coating Prepared by Laser Cladding[J].Journal of Iron and Steel Research,2017,24(2):184-189
[6] 初雅杰,李晓泉,李建,等.退火温度对激光熔覆AlFeCrCoNiTi高熵合金涂层组织与性能的影响[J].材料热处理学报,2018,39(06):91-95 [7] 李俊魁,彭竹琴,马明星,等.CeO2对AlCoCuFeMnNi高熵合金涂层组织和硬度的影响[J].金属热处理,2017,42(11):19-23 [8] 屈乐,王维刚,李培友,等.过渡族Fe-Cr-Co-Ni系高熵合金的研究进展[J].热加工工艺,2016,45(16):15-19 [9] 卢金斌,彭竹琴,马明星,等.Q235钢等离子熔覆CoCrCuFeMnNi高熵合金涂层[J].金属热处理,2016,41(04):51-54 [10] ZHOU R,LIU Y,ZHOU C S,et al.Microstructures and Mechanical Properties of C-Containing FeCoCrNi Highentropy Alloy Fabricated by Selective Laser Melting[J].Intermetallics,2018,94:165-171
[11] 李栋梁,周芳,余师豪.激光熔覆FeCrNiMnMoxB(0.5)高熵合金涂层组织与耐蚀性能[J].强激光与粒子束,2016,28(02):196-201 [12] 张丽,沙明红,张峻巍,等.Al含量对AlxCoCrFeNiTi(0.5)激光涂层组织和耐磨性的影响[J].材料热处理学报,2015,36(12):185-189 [13] 李泰增,张丽,陈子尚,等.激光熔覆AlCoCrFeNiTi(0.5)合金涂层制备及其组织性能[J].辽宁科技大学学报,2015,38(03):170-173
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