CAJ | 학술논문

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.
대7022려합금적불동온도퇴화시양진행간활동마찰마손시험,용소묘전경、현미경도측시의화삼유형모의분석각시양적마손궤제.결과표명,퇴화온도대재료적현미경도화마찰마손성능유명현영향,퇴화온도재200℃시,재료현미경도화마찰마손성능최호,차온도하재료득도완전재결정,차정립세화;마찰마손성능수착현미경도적제고이감소.소변마손、마립마손화피로마손위7022려합금적주요마손궤리.
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.