激光复合加工对7050铝合金膜-基结合性能影响的研究  

Research on Effect of Laser Combined Machining on Film-matrix Binding Performance of 7050 Al Alloy

作　　者：花国然[1] 周东呈 曹宇鹏[1] 徐影[1] 陈浩天[1] 

机构地区：[1]南通大学机械工程学院,江苏南通226019

出　　处：《热加工工艺》2017年第12期162-163,167,共3页Hot Working Technology

基　　金：江苏省科技成果转化专项资金项目(BA2013099);南通市重大科技创新专项项目(XA2013001)

摘　　要：采用激光冲击、微织构加工、激光复合加工分别对7050铝合金进行了表面处理。在处理后的7050铝合金上制备了TiAlN涂层。利用划痕仪检测了三种表面处理技术下的膜-基结合强度。结果表明:三种表面处理技术都提高了材料的膜-基结合强度。当激光冲击采用3.89 J能量,微织构采用相离的搭接方式与5 W的激光功率时,膜-基结合力达到32.1 N,为未经处理时的2倍以上。The surface of 7050 A1 alloy was treated by laser shock, micro-texture maching and laser combined machining. The TiA1N coating was prepared on 7050 A1 alloy after treatmnet. The film-matrix bonding strength under above processing methods was studied by scratch tester. The results show that all of surface treatment process technologies improve the filmmatrix bonding performance. When laser shock energy selects 3.89 J, micro texture machining selects the lap mode of disjoint and the laser power selects 5W,the film-matrix bonding force is 32.1 N, which is double of the untreated aluminum alloy.

关 键 词：膜-基结合力 激光加工 微织构 复合加工 

分 类 号：TG174[金属学及工艺—金属表面处理]