退火温度对7022铝合金干摩擦性能的影响  

The effect of annealing temperature to the tribological property of 7022 aluminum alloy

作　　者：汪洪峰[1] 左敦稳[1] 邵定林[1] 黄铭敏[1] 应峰[2] 

机构地区：[1]南京航空航天大学机电学院,南京210016 [2]南京航空航天大学材料科学与技术学院,南京210016

出　　处：《深圳大学学报（理工版）》2010年第2期131-136,共6页Journal of Shenzhen University(Science and Engineering)

基　　金：国家高技术研究发展计划资助项目(SQ2008AA10XK1468859);江苏省研究生创新基金资助项目(CX09B_073Z)

摘　　要：对7022铝合金的不同温度退火试样进行干滑动摩擦磨损试验,用扫描电镜、显微硬度测试仪和三维形貌仪分析各试样的磨损机制.结果表明,退火温度对材料的显微硬度和摩擦磨损性能有明显影响,退火温度在200℃时,材料显微硬度和摩擦磨损性能最好,此温度下材料得到完全再结晶,且晶粒细化;摩擦磨损性能随着显微硬度的提高而减小.塑变磨损、磨粒磨损和疲劳磨损为7022铝合金的主要磨损机理.Wear mechanisms of 7022 aluminum alloy annealed specimens at different temperatures were studied by means of scanning electron microscopy （SEM）, micro hardness tester and three-dimensional shape analysis instrument. The results showed that annealing temperature has a significant effect on the sliding friction, on the wear properties and on the microhardness. Annealing temperature at 200 ℃, microhardness and friction and wear properties of 7022 aluminum alloy were the best. The material was fully recrystallized and the grain was refined. In addition, the sliding friction coefficient and the wear volume decrease as the microhardness increasing. Plastic deformation wear, the abrasive wear and the fatigue wear were the main wear mechanisms for 7022 aluminum alloy.

关 键 词：7022铝合金 摩擦学 滑动摩擦 大飞机焊接残余应力 航空材料 退火热处理 摩擦磨损性能 显微硬度 磨损机理 

分 类 号：TH117.1[机械工程—机械设计及理论]