邓德伟,郑海彤,马玉山,孙奇,张勇,李天澍,赵祥路

• 1:大连理工大学材料科学与工程学院辽宁省凝固控制与数字化制备技术重点实验室
• 2:沈阳鼓风机集团股份有限公司研究院
• 3:吴忠仪表有限责任公司

摘要(Abstract)：

激光熔覆制备熔覆层后,选用相同功率的激光再次扫描熔覆层对其进行重熔,探究不同激光功率下Cu-18Pb-2Sn激光熔覆层重熔后组织和性能的变化。采用着色探伤法对熔覆层的孔洞缺陷进行检测,利用光学显微镜(OM)、场发射扫描电镜(FE SEM)和X射线衍射仪(XRD)对熔覆层的显微组织、元素分布和物相组成进行检测,使用维氏硬度计测试熔覆层的显微硬度,并采用往复高速摩擦试验机对熔覆层的摩擦磨损性能进行评价。结果表明,相比于未处理的熔覆层,激光重熔后熔覆层内的孔洞数量明显减少,熔覆层组织仍由网状的Pb相和Cu相基体构成,但网状Pb相的数量相对减少,点状Pb相增多。重熔后熔覆层的显微硬度有所上升,平均硬度最高可达到93 HV0.1。试样在摩擦磨损形式下的磨损机理主要为磨粒磨损,激光功率为900、1100、1300和1500 W的熔覆层的平均摩擦系数分别为0.305、0.308、0.296和0.289。

关键词(KeyWords)： 激光重熔;铜合金;显微组织;耐磨性

Abstract:

Keywords:

基金项目(Foundation): 辽宁重大装备制造协同创新中心基金(DUT2017031);; 高端控制阀产业技术协同创新中心基金(2018WZ003)

作者(Author): 邓德伟,郑海彤,马玉山,孙奇,张勇,李天澍,赵祥路

DOI: 10.13289/j.issn.1009-6264.2020-0512

参考文献(References)：

• [1] 孙延军，廉影，李阳.铜及铜合金搅拌摩擦焊的研究进展[J].兵器材料科学与工程，2019,42(5):143-146.SUN Yan-jun,LIAN Ying,LI Yang.Research progress in friction stir welding of copper and copper alloy[J].Ordnance Material Science and Engineering,2019,42(5):143-146.
• [2] 刘平.高性能铜基合金的研究进展[J].功能材料，2014,45(7):7016-7021.LIU Ping.Progress in research of copper-based alloys with high-performance[J].Journal of Functional Materials,2014,45(7):7016-7021.
• [3] 程继贵，夏永红.温压法制备铜铅轴承合金的研究[J].材料科学与工程，2001,19(1):43-45.CHENG Ji-gui,XIA Yong-hong.Study on the warm compaction in manufacturing Cu-Pb bearing alloy[J].Journal of Materials Science and Engineering,2001,19(1):43-45.
• [4] 朱俊.车用滑动轴承及常用的合金材料[J].汽车工程师，2009(1):40-42.ZHU Jun.Vehicle sliding bearing and alloy materials[J].Auto Engineer,2009(1):40-42.
• [5] 刘基凯，苏新勇.装备修复用铜合金涂层制备方法及应用研究[J].表面技术，2016,45(9):134-139.LIU Ji-kai,SU Xin-yong.Preparing technology and application of cupreous coatings in equipment repairing[J].Surface Technology,2016,45(9):134-139.
• [6] 瞿伟成，杨博程，刘延辉，等.激光表面加工技术的发展与现状[J].热加工工艺，2017,46(20):38-41.QU Wei-cheng,YANG Bo-cheng,LIU Yan-hui,et al.Development and status of laser surface processing[J].Hot Working Technology,2017,46(20):38-41.
• [7] 刘红宇，张雷，黄雄荣.激光表面改性技术及其在轴承上的应用[J].热处理，2018,33(3):40-43.LIU Hong-yu,ZHANG Lei,HUANG Xiong-rong.Laser surface modification technology and its application to bearing[J].Heat Treatment,2018,33(3):40-43.
• [8] 董学泉，袁惠新，孙涛.激光重熔改性对电弧喷涂Al涂层性能的影响[J].材料科学与工程学报，2018,36(4):661-664.DONG Xue-quan,YUAN Hui-xin,SUN Tao.Effect of laser remelting on property of arc sprayed Al coating[J].Journal of Materials Science and Engineering,2018,36(4):661-664.
• [9] 宋桂荣.激光重熔超音速火焰喷涂铁基合金涂层的组织和性能研究[D].天津：天津大学，2010.SONG Gui-rong.Study on microstructure and property of laser remelted Fe-based coating deposited by HVOF[D].Tianjin:Tianjin University,2010.
• [10] 王幸福，司永礼，韩福生，等.激光重熔处理对超音速火焰喷涂NiCr-Cr3C2涂层组织及性能的影响[J].金属热处理，2018,43(10):185-191.WANG Xing-fu,SI Yong-li,HAN Fu-sheng,et al.Effect of laser re-melting treatment on microstructure and properties of high velocity oxy-fuel sprayed NiCr-Cr3C2 coating[J].Heat Treatment of Metals,2018,43(10):185-191.
• [11] Xie G,Zhang J,Lu Y,et al.Effect of laser remelting on corrosion behavior of plasma-sprayed Ni-coated WC coatings[J].Materials Science and Engineering A,2007,460-461:351-356.
• [12] 贾卫平，姚井龙，吴蒙华，等.激光重熔参数对镍基纳米TiN复合电沉积镀层性能的影响[J].表面技术，2016,45(3):78-83.JIA Wei-ping,YAO Jing-long,WU Meng-hua,et al.Effect of laser remelting parameters on properties of nickel-based nano TiN composite deposition coatings[J].Surface Technology,2016,45(3):78-83.
• [13] Das B,Nath A K,Bandyopadhyay P P.Online monitoring of laser remelting of plasma sprayed coatings to study the effect of cooling rate on residual stress and mechanical properties[J].Ceramics International,2018,44(7):7524-7534.
• [14] Yasa E,Kruth J P.Microstructural investigation of selective laser melting 316L stainless steel parts exposed to laser re-melting[J].Procedia Engineering,2011,19:389-395.
• [15] Wei K W,Lü M,Zeng X Y,et al.Effect of laser remelting on deposition quality,residual stress,microstructure,and mechanical property of selective laser melting processed Ti-5Al-2.5Sn alloy[J].Materials Characterization,2019,150:67-77.
• [16] Gustmann T,Schwab H,Kühn U,Pauly S.Selective laser remelting of an additively manufactured Cu-Al-Ni-Mn shape-memory alloy[J].Materials and Design,2018,153:129-138.
• [17] 邓德伟，郑海彤，马玉山，等.激光熔覆制备Cu-18Pb-2Sn涂层的组织与性能研究[J].功能材料，2020,51(6):6001-6006.DENG De-wei,ZHENG Hai-tong,MA Yu-shan,et al.Study on microstructures and performances of Cu-18Pb-2Sn coating by laser cladding[J].Journal of Functional Materials,2020,51(6):6001-6006.

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