喷砂与激光表面织构工艺对不同基材表面与粘接性能的影响  

Effects of Sandblasting and Laser Surface Texture on the Surface and Bond Properties of Different Substrates

作　　者：黄雄荣 张瑄珺[3,4] 邵若男 Huang Xiongrong;Zhang Xuanjun;Shao Ruonan(Shanghai Bearing Technology Research Institute Co.,Ltd.,Shanghai 201801,China;Shanghai Special Bearing Technology Center,Shanghai 201801,China;Shanghai Institute of Laser Technology Co.,Ltd.,Shanghai 200233,China;Shanghai Engineering Research Center of Laser Intelligent Manufacturing,Shanghai 200233,China)

机构地区：[1]上海市轴承技术研究所有限公司,上海201801 [2]上海特种轴承工程技术中心,上海201801 [3]上海市激光技术研究所有限公司,上海200233 [4]上海激光智能制造工程技术研究中心,上海200233

出　　处：《应用激光》2024年第11期83-91,共9页Applied Laser

基　　金：上海市产业协同创新(科技)项目(XTCX-KJ-2022-40)。

摘　　要：为研究喷砂与激光表面织构(LST)处理对7075铝合金、TC4钛合金、05Cr17Ni4Cu4Nb不锈钢3种基材表面与粘接性能的影响,对3种基材表面进行了喷砂与两种LST处理。利用激光共聚焦显微镜对喷砂后的试验件表面三维形貌和面粗糙度(Sa)进行了观察与测量,利用扫描电镜和残余应力仪对处理后试验件表面形貌和处理前后试验件表面残余应力进行了观察与测量,利用智能电子拉力计对粘贴衬垫后的试验件的剥离强度进行了测试,采用目视与体视显微镜观察的方式对衬垫剥离后的金属基材表面形貌进行了观察。结果表明,不同基材经同一喷砂或LST处理后表面微观形貌差异明显。喷砂处理与LST处理可分别在3种基材表面引入残余压应力和残余拉应力,05Cr17Ni4Cu4Nb不锈钢残余应力变化最明显。经两种LST处理后,7075铝合金与衬垫间的剥离强度分别达到了0.849 N/mm和0.78 N/mm,相比喷砂试样增加了333.2%和298.0%,TC4钛合金与衬垫间的剥离强度则达到了0.65 N/mm和1.3 N/mm,相比喷砂试样增加了150.0%和400.0%。除05Cr17Ni4Cu4Nb不锈钢外,LST处理均可增加7075铝合金和TC4钛合金与衬垫间的剥离强度与剥离完善性。This study examines the influence of sandblasting and laser surface texture(LST)treatments on the surface and bonding properties of 7075 aluminum alloy,TC4 titanium alloy,and 05Cr17Ni4Cu4Nb stainless steel.Both sandblasting and two variants of LST treatments were applied to the three substrates.The surface morphology and surface roughness(Sa)were observed and measured through laser confocal microscopy.The surface morphology of treated test pieces were observed by scanning electron microscope and the residual stress of treated and untreated test pieces were measured by residual stress meter.The peel strength of test pieces after pasting the liner were tested by intelligent electronic tension machine.The surface morphology of metal substrates after stripping the liner were observed by visual and stereomicroscope.The results shows that the surface morphology of different substrates after the same sandblasting or LST treatment is obviously different.Sandblasting and LST treatments can introduce residual compressive stress and residual tensile stress on the surface of the three substrates,respectively.And the residual stress changes of 05Cr17Ni4Cu4Nb stainless steel are the most obvious.After two LST treatments,the peel strength between 7075 aluminum alloy and liner reached 0.849 N/mm and 0.78 N/mm,respectively,which increased 333.2%and 298.0%compared with the sandblasted sample,and the peel strength between TC4 titanium alloy and liner reached 0.65 N/mm and 1.3 N/mm,which increased 150.0%and 400.0%compared with the sandblasted sample.In addition to 05Cr17Ni4Cu4Nb stainless steel,LST treatments can increase the peel strength and bond integrity between 7075 aluminum alloy with TC4 titanium alloy with liner.

关 键 词：不锈钢 铝合金 钛合金 粗化 残余应力 剥离 

分 类 号：TN249[电子电信—物理电子学] TH133.31[机械工程—机械制造及自动化]