周恺,谢发勤,吴向清,王少青,李国平.TC21钛合金微弧氧化涂层微动磨损行为研究[J].稀有金属材料与工程,2021,50(8):2831~2840.[Zhou Kai,Xie Faqin,Wu Xiangqing,Wang Shaoqing,Li Guoping.Fretting wear damage mechanism of plasma electrolytic oxidation coatings on TC21 titanium alloy[J].Rare Metal Materials and Engineering,2021,50(8):2831~2840.]
TC21钛合金微弧氧化涂层微动磨损行为研究
投稿时间:2021-03-22  修订日期:2021-04-20
中文关键词:  TC21钛合金  微弧氧化  微动磨损  损伤机理
基金项目:陕西省自然科学基础研究计划(项目号2021JM-055),国家自然科学基金资助(项目号52001256)
中文摘要:
      采用球盘接触形式,在50 μm和150 μm位移振幅条件下,研究了载荷(60 N、40 N和20 N)对TC21钛合金及其表面微弧氧化(PEO)涂层切向微动磨损性能的影响。结果显示,随着位移振幅的增大和载荷的减小,TC21钛合金和PEO涂层的微动区域均由部分滑移区向滑移区转变。在部分滑移区,两种材料沿微动方向的磨痕宽度随载荷的减小而减小。虽均未出现明显的材料损失,但TC21钛合金边缘微滑区存在微裂纹的萌生和扩展,其程度随载荷的减小而加重,而微动对PEO涂层只起到了平滑作用。在滑移区,两种材料的磨痕宽度随载荷的减小而增大,且均存在局部磨损。磨损程度随振幅的增大和载荷的减小而加深。其中,PEO涂层的最大磨痕深度小于TC21钛合金,显示出更好的抗微动磨损性能。
Fretting wear damage mechanism of plasma electrolytic oxidation coatings on TC21 titanium alloy
英文关键词:TC21 titanium alloy  plasma electrolytic oxidation  fretting wear  damage mechanism
英文摘要:
      The effects of normal load (60 N, 40 N and 20 N) on the tangential fretting wear properties of the TC21 titanium alloy and plasma electrolytic oxidation (PEO) coatings were investigated under displacement amplitudes of 50 μm and 150 μm with a ball-on-plate contact configuration. The results showed that with increase of the displacement amplitude and decrease of the normal load, the fretting wear regime changed from partial slip regime to slip regime. In partial slip regime, the widths of the wear tracks along the fretting direction decreased with the decreasing normal load. Although there was no significant material loss, the extent of micro-cracks initiation and propagation in the micro-slip zone of the TC21 titanium alloy deepened with the decreasing normal load. However, the fretting only played a smooth effect on the PEO coatings. In slip regime, the widths of the wear tracks along the fretting direction increased with the decreasing normal load. There existed local wear in both materials, and the wear degree increased with the increasing amplitude and decreasing normal load. The maximum wear depth of the PEO coatings was shallower than that of the TC21 titanium alloy, which proved that they could improve the fretting wear resistance.
作者单位E-mail
周恺 西北工业大学 zhouk785@163.com 
谢发勤 西北工业大学  
吴向清 西北工业大学  
王少青 西北工业大学  
李国平 西安建筑科技大学  
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