ABSTRACT

In this article, the friction and scratch characteristics of textured and rough surfaces of pure aluminum were studied using the quasi-continuum method. The surface profile of pure aluminum was altered with regular arrangements (bumps) and irregular arrangements (random surface roughness) along two orientations x[110] and y[001]. The surface smoothness and the internal strain of the material were studied through the scratching process. The effects of the ratio of the bump width to the bump pitch (W/P), scratching depth, average surface roughness (Eta) and indenter radius were examined. The results indicated that the surface smoothness was affected by the W/P ratio. Upon increasing the W/P ratio, the internal strain of the material became more intense. The greater Ra value the more severe impact. The coefficient of friction was found to be proportional to the scratching depth and indenter radius values. A scratching depth of 15 angstrom is suggested for optimal surface smoothness.