摘要
为了探究2024铝合金的磨损方式,并提高其力学性能和磨损性能.文中通过热压烧结工艺制备2024铝合金块体材料,对其进行固溶时效和均匀化处理.通过显微组织分析、扫描电镜观察以及干磨损和边界润滑工况下的摩擦磨损性能测试来评估2024铝合金经热处理过程后的性能(如硬度、摩擦因数和磨损率等).研究结果表明:对于不同热处理工艺下的2024铝合金,干磨损条件下主要磨损机制均为粘着磨损,在边界润滑条件下则以磨粒磨损为主.经固溶时效(495℃,2h水淬+120℃,12h空冷)处理后的2024铝合金硬度较高,组织分布均匀;磨损率和摩擦因数显著降低,磨损率为原始合金的1/3.
In order to explore the wear behavior of 2024 Aluminum Alloy,and improve the mechanical properties and wear resistance.In this paper,2024 aluminum alloy block material prepared by hot pressing sintering process was treated by solid solution and aging.The properties of 2024 aluminum alloy during heat treatment(such as hardness,friction coefficient,wear resistance,etc.)were evaluated by microstructure analysis,SEM observation and friction and wear test.The results indicated that for the 2024 aluminum alloy under different heat treatment conditions,the main wear mechanism is adhesive wear in the condition of dry wear,and abrasive wear is the main wear mechanism in the condition of boundary lubrication.After the solid solution aging treatment(495 ℃,2hwater quenching +120 ℃,12h air cooling)the 2024 aluminum alloy has higher hardness,uniform distribution of the structure.The friction coefficient and wear rate were decreased significantly.Among them,the wear rate is reduced to 1/3 of the original alloy.
作者
罗佳佳
白亚平
李建平
郭永春
LUO Jiajia;BAI Yaping;LI Jianping;GUO Yongchun(School of Materials and Chemical Engineering,Xi’an Technological University,Xi’an 710021,China)
出处
《西安工业大学学报》
CAS
2018年第6期626-632,共7页
Journal of Xi’an Technological University
基金
国家自然科学基金(51705391)
陕西省教育厅专项科学研究计划(17JK0383)
装备预研领域基金重点项目(6140922010301)
陕西省创新人才推进计划-科技创新团队(2017KCT-05)
关键词
2024铝合金
固溶时效热处理
均匀化热处理
磨损性能
2024 aluminum alloy
solution aging heat treatment
homogenizing heat treatment
wear resistance
