中文摘要：

选取三种不同纹理的铝合金试样,并在试样上加工不同面积占有率的规则圆形微凹坑,利用自制的摩擦试验装置,在油润滑条件下以不同接触压力进行摩擦试验,试验过程中滑动方向与表面纹理方向的夹角分别为0°、45°、90°。利用非接触式三维轮廓仪测量试验前后试样的三维表面形貌,并选取Sa、Str、Vvv、Vvc等表面表征参数来分析滑动接触界面表面形貌的变化。结果表明：表面纹理方向的差异导致铝合金表面在滑动接触摩擦过程中表现出各向异性,而在其表面加工不同面积占有率的微凹坑,减弱了铝合金表面纹理方向性对界面摩擦的影响,反映出表面微凹坑和纹理对界面摩擦的耦合作用。同时界面摩擦对试件的表面形貌也有明显的影响,Str、Vvv、Vvc在试验后发生了规律性的变化。

英文摘要：

The effects of texture direction and surface micro-cavity of aluminum alloy on frictional properties at the sliding contact interface was investigated. Three different surface textures were ob-tained by cutting, then manufactured micro-cavity with different area densities on the surface. A series of frictional experiments were carried out with different contact pressures utailored friction tester, the angels between the sliding and surface texture directions were as 0°, 45°,90° respectively during the experiments. The three dimensional surface topography of samples before and after friction tests were measured with non-contact optical profilometer, and the variations of su-- face topography at the sliding contact interface were analyzed by choosing such parameters as Sa ;Str , V vv and V vc . The experimental results show that the aluminum alloy exhibits anisotroses of sliding contact friction due to different surface texture directions. And the micro-cavity with diferent area densities on the surface may weaken the effects of texture direction on the cfriction, which reflects the coupling effects of surface micro-cavity and texture on the interface fric-tion. The effects of interface friction on surface topography lead to regular changes of the three dimen-sional surface parameters of Str, V vv , Vvc .