电脉冲辅助超声滚压处理钛合金表面氧化层研究  

Research on Oxide Layer on Titanium Alloy Surface Treated by Electropulsing-Assisted Ultrasonic Rolling

作　　者：王保坤 王浩宇[1,2] 纪仁杰 郑茜[1] 董天聪 刘永红 WANG Baokun;WANG Haoyu;JI Renjie;ZHENG Qian;DONG Tiancong;LIU Yonghong(China University of Petroleum(East China),Qingdao 266580,China;Qingdao Topscomm Communication Co.,Ltd.,Qingdao 266109,China)

机构地区：[1]中国石油大学(华东),青岛266580 [2]青岛鼎信通讯股份有限公司,青岛266109

出　　处：《航空制造技术》2021年第19期42-47,共6页Aeronautical Manufacturing Technology

基　　金：国家自然科学基金(51675535);山东省重点研发计划(2019GGX104068);青岛西海岸新区源头创新专项(2020–82)。

摘　　要：为了研究电脉冲辅助超声滚压技术对金属氧化层的处理效果,以双重退火态TC4钛合金为材料进行了处理,并利用光学显微镜、摩擦磨损仪、电子探针仪等对处理后表面的截面金相、耐磨损性能、磨损表面形貌进行检测和分析。研究结果表明,TC4钛合金表面120μm氧化层经400A条件下电脉冲辅助超声滚压处理后形成约11μm厚的致密α相氧化层。对生成的致密氧化层进行摩擦磨损性能检测,其磨损量为车削试样的一半,能够维持较长时间的低摩擦系数,磨损表面磨粒少、表面平整、犁沟少,表现出优秀的耐磨损性能。In order to study the effect of electropulsing-assisted ultrasonic rolling on metal oxide layer,double annealed TC4 titanium alloy was treated in this way.The cross section metallograph,wear resistance and wear surface morphology of the treated surface were detected and analyzed by optical microscope,friction wear testing machine and electron microprobe.The results show that the surface oxide layer with the thickness of 120μm is transformed into a compactα–phase oxide layer with the thickness about 11μm after electropulsing-assisted ultrasonic rolling with the current of 400A.The friction and wear properties of the treated sample were tested and the low friction coefficient can maintain for a long time during the testing.The testing results show that the abrasion loss of treated sample is half of that of the turning sample and the wear surface is smooth.Meanwhile,the particles that adhere to the wear surface and the ploughs on the wear surface are less,which indicates that the wear resistance after treatment is greatly enhanced.

关 键 词：TC4钛合金 超声滚压 电脉冲 耐磨性 致密氧化层 

分 类 号：V261.92[航空宇航科学与技术—航空宇航制造工程] TG174.4[金属学及工艺—金属表面处理]