吴晗,舒林森

• 1:陕西理工大学机械工程学院
• 2:陕西省工业自动化重点实验室

摘要(Abstract)：

采用激光熔覆技术在40Cr钢表面制备了MoS_2+FeCrNiSi复合涂层,使用超景深显微镜、显微硬度计及摩擦磨损试验机等研究了不同激光功率对MoS_2+FeCrNiSi复合涂层形貌、显微组织、硬度及摩擦磨损性能的影响。结果表明:激光功率为2400 W时制备的复合涂层的宏观形貌最好,涂层表面连续且平整;涂层的稀释率随着激光功率的增加先减小后增加;复合涂层的组织由树枝晶、柱状晶、胞状晶和胞状树枝晶组成。随着激光功率的增加,涂层显微硬度逐渐升高。当激光功率为2700 W时,涂层的硬度最高可达754.7 HV0.5,是基体硬度的3.6倍。当激光功率处于2100～2700 W之间时,随着激光功率增加,涂层平均摩擦系数和磨损量均显著降低,2700 W时所制备的涂层耐磨性最佳。

关键词(KeyWords)： 激光熔覆;激光功率;显微组织;显微硬度;摩擦磨损

Abstract:

Keywords:

基金项目(Foundation): 国家自然科学基金(51505268);; 国防科技重点实验室基金(JCKY61420052022);; 陕西省教育厅重点项目(20JS020);陕西省教育厅专项科研计划项目(21JK0562);; 陕西省工业自动化重点试验室开放课题研究基金(SLGPT2019KF01-16);; 陕西理工大学校级科研项目(SLGKY2005)

作者(Author): 吴晗,舒林森

DOI: 10.13289/j.issn.1009-6264.2021-0226

参考文献(References)：

• [1] Li H,Zhou H,Zhang D,et al.Comparative study of induction quenching and laser surface texturing on anti-wear performance of 40Cr steel[J].Materials Engineering and Performance,2021,30(10):2238-2244.
• [2] Cheng W,Zhang X L,Lu J Z,et al.Effect of laser oscillating welding on microstructure and mechanical properties of 40Cr steel/45 steel fillet welded joints[J].Optik,2021,231:166458.
• [3] Cao Q,Huang G S,Ma L,et al.Comparison of a cold-sprayed and plasma-sprayed Fe25Cr20Mo1Si amorphous alloy coatings on 40Cr substrates[J].Materials and Corrosion,2020,71(11):1872-1884.
• [4] 都跃良.激光熔覆修复技术在40Cr轴类零件现场修复中的应用[J].金属加工(热加工),2021(6):37-42.DU Yue-liang.Application of laser cladding repair technology in field repair of 40Cr shaft parts[J].Metal Working (Hot Working),2021(6):37-42.
• [5] 张敏，王刚，张立胜，等.40Cr钢表面激光熔覆Fe、Ni基涂层组织性能研究[J].稀有金属，2021,45(8):928-935.ZHANG Min,WANG Gang,ZHANG Li-sheng,et al.Microstructure and properties of laser cladding Fe and Ni coatings on 40Cr steel surface[J].Rare Metals,2021,45(8):928-935.
• [6] 王家胜，舒林森.农业拖拉机主轴激光熔覆再制造修复研究[J].激光与光电子学进展，2020,57(7):242-247.WANG Jia-sheng,SHU Lin-sen.Research on laser cladding remanufacturing repair of agricultural tractor spindle[J].Laser and Optoelectronics Progress,2020,57(7):242-247.
• [7] 赵欣鑫，肖华强，游川川，等.TC4表面激光熔覆TiAl合金涂层的工艺和组织性能[J].激光技术，2021,45(6):697-702.ZHAO Xin-xin,XIAO Hua-qiang,YOU Chuan-chuan,et al.Microstructure and properties of laser cladding TiAl alloy coating on TC4 surface[J].Laser Technology,2021,45(6):697-702.
• [8] 赵庆宇，万焱，秦坤.激光熔覆Ti-BN/Co基复合涂层微观组织和耐磨性能研究[J].宽厚板，2020,26(6):25-31.ZHAO Qing-yu,WAN Yan,QIN Kun.Microstructure and wear resistance of laser cladding Ti-Bn/Co matrix composite coatings[J].Wide-Thick Plate,2020,26(6):25-31.
• [9] Zhang Y,Han T F,Xiao M,et al.Effect of process parameters on the microstructure and properties of laser-clad FeNiCoCrTi0.5 high-entropy alloy coating[J].International Journal of Minerals Metallurgy and Materials,2020,27(5):630-639.
• [10] 童文辉，张新元，李为轩，等.激光工艺参数对TiC增强钴基合金激光熔覆层组织及性能的影响[J].金属学报，2020,56(9):1265-1274.TONG Wen-hui,ZHANG Xin-yuan,LI Wei-xuan,et al.Effect of laser processing parameters on microstructure and properties of TiC reinforced cobalt-based alloy laser cladding coating[J].Acta Metallurgica Sinica,2020,56(9):1265-1274.
• [11] 舒林森，林冉.基于均匀设计的铁基合金粉末激光熔覆工艺参数优化[J].材料热处理学报，2021,42(4):167-174.SHU Lin-sen,LIN Ran.Optimization of process parameters for laser cladding of Fe-based alloy powder based on uniform design[J].Transactions of Materials and Heat Treatment,2021,42(4):167-174.
• [12] 许瑞华，黎向锋，左敦稳，等.扫描速度对钛合金NiCoCrAlY熔覆涂层显微组织及硬度的影响[J].稀有金属，2014,38(5):807-812.XU Rui-hua,LI Xiang-feng,ZUO Dun-wen,et al.Effect of scanning speed on microstructure and hardness of NiCoCrAlY cladding coating on titanium alloy[J].Rare Metals,2014,38(5):807-812.
• [13] 刘喜明，连建设，张庆茂.送粉激光熔覆界面特性及熔覆层稀释率[J].机械工程学报，2001(4):38-43.LIU Xi-ming,LIAN Jian-she,ZHANG Qing-mao.Interface characteristics and dilution rate of laser cladding with powder feeding[J].Journal of Mechanical Engineering,2001(4):38-43.
• [14] Jiang J X,Pang X M,Zhou J X,et al.Optical performance and corrosion resistance of TiN/Ni multiphase cermet by laser cladding[J].Optics and Laser Technology,2021,143:107308.
• [15] 徐泽洲，王志英，何志军，等.激光功率对激光熔覆CeO2改性316L涂层组织与性能的影响[J].稀有金属，2020,44(3):281-286.XU Ze-zhou,WANG Zhi-ying,HE Zhi-jun,et al.Effect of laser power on microstructure and properties of laser cladding CeO2 modified 316L coating[J].Rare Metals,2020,44(3):281-286.
• [16] 陈洋，储茂友，王力军，等.超音速火焰喷涂制备Cr2AlC涂层组织性能研究[J].稀有金属，2012,36(4):568-573.CHEN Yang,CHU Mao-you,WANG Li-jun,et al.Microstructure and properties of Cr2AlC coated by supersonic flame spraying[J].Rare Metals,2012,36(4):568-573.
• [17] Shen F M,Tao W,Li L Q,et al.Effect of microstructure on the corrosion resistance of coatings by extreme high speed laser cladding[J].Applied Surface Science,2020,517:224-235.
• [18] 韩雪，刘金娜，崔秀芳，等.La2O3改性Ti/MoS2镍基复合涂层微观组织和摩擦学性能研究[J].表面技术，2019,48(9):167-176.HAN Xue,LIU Jin-na,CUI Xiu-fang,et al.Study on microstructure and tribological properties of Ti/MoS2 nickel matrix composite coating modified by La2O3[J].Surface Technology,2019,48(9):167-176.
• [19] 张明奇.H13钢表面激光熔覆铁基自润滑涂层的耐磨性研究[D].镇江：江苏大学，2020.ZHANG Ming-qi.Study on wear resistance of laser cladding Fe-based self-lubricating coating on H13 steel[D].Zhenjiang:Jiangsu University,2020.

文章评论(Comment)：