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中文摘要：
应用正常应力，表面粗糙，和纯 Cu 的微观结构上的起始的谷物尺寸的效果在滑动处理的变丑(PFSD ) 的压盘磨擦期间发展了被调查。在每种情况中，变丑微观结构被描绘，对待的表面层的坚硬被测量评估它的力量。结果显示在任何深度的使变形的层和坚硬的厚度与增加正常应力增加了。更小的钢压盘表面粗糙导致了更少的微结构精炼，而微结构精炼被减少提高 Cu 样品的表面粗糙。在一种很大的起始的谷物尺寸的情况中(d > 10 公里) ，到 undeformed 材料的从好谷物的微观结构的更锋利的转变在 PFSD 处理以后在对待的表面层被获得。
英文摘要：
The effects of applied normal stress, surface roughness, and initial grain size on the microstructure of pure Cu developed during platen friction sliding deformation （PFSD） processing were investigated. In each case, the deformation microstructure was characterized and the hardness of the treated surface layer was measured to evaluate its strength. The results indicated that the thickness of the deformed layer and the hardness at any depth increased with increasing normal stress. A smaller steel platen surface roughness resulted in less microstruc- tural refinement, whereas the microstructural refinement was enhanced by decreasing the surface roughness of the Cu sample. In the case of a very large initial grain size （d 〉 10 mm）, a sharper transition from fine-grain microstructure to undeformed material was obtained in the treated surface layer after PFSD processing.
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