【摘要】 为探索冷热处理对7075铝合金试件滚磨光整加工效果的影响，对原始态、退火态和深冷态(深冷处理9 h)试样进行滚磨光整加工实验和摩擦磨损实验，记录加工过程中试件表面粗糙度值和质量等数据，采用扫描电子显微镜和超景深光学显微镜，表征试件的表面形貌和磨痕形貌，采用能谱仪分析磨痕表面元素的成分。结果表明，滚磨光整加工后，深冷态试样表面粗糙度下降率和材料去除率较原始态有明显提高，且表面一致性高，表面光亮度最好。摩擦磨损实验中，深冷态试件的摩擦系数波动最小，总体变化更加平稳，其磨损机制主要为粘着磨损。更多还原

【Abstract】 In order to explore the influence of annealing treatment and cryogenic treatment on the effect of barrel finishing of 7075 aluminium alloy specimens, the barrel finishing experiments and friction and wear experiments were carried out on the original state, annealed state and cryogenic state(cryogenic treatment for 9 h) specimens.The surface roughness value and quality data of the specimens during processing were recorded.The surface morphology and wear scar morphology of the specimens were characterized by scanning electron microscopy and a super depth of field microscopy.The composition of the elements on the wear scar surface was analyzed by energy dispersive spectrometer.The results show that after barrel finishing, the surface roughness reduction rate and material removal rate of the cryogenic state specimens are significantly improved compared with the original state, and the cryogenic state specimens have high surface consistency and the best surface brightness.In the friction and wear experiment, the friction coefficient of the cryogenic specimen fluctuates the least, and the overall change is more stable.The wear mechanism of cryogenic specimens is mainly adhesive wear.更多还原