T6态Al-10Si-5Cu-0.75Mg合金的干滑动摩擦磨损性能
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摘要
利用UMT-2型摩擦磨损试验机研究了T6态Al-10Si-5Cu-0.75Mg合金的干滑动摩擦磨损性能,采取SEM、XRD、EDS等方法分析了合金在不同转速和载荷下的摩擦磨损行为。结果表明:合金的磨损率随转速和载荷的增加而增大,但在800 r/min的高转速下仍具有良好的耐磨性,15 N高载荷时的磨损率相对于5 N低载荷时只增加了291%,仍属于轻微磨损;摩擦系数的平均值在0.35～0.40范围内变化,且随时间的变化不大,具有较高的稳定性;另外,磨损机制由低速轻载时的磨粒磨损、粘着磨损向高速重载时的剥层磨损、氧化磨损转变。
The dry sliding friction and wear test of T6 treated Al-10 Si-5 Cu-0.75 Mg alloy was performed using UMT-2 tribometer. The wear mechanisms of the alloy under different loads and revolving speeds were analyzed by SEM, XRD and EDS. The results reveal that the wear rate of Al-10 Si-5 Cu-0.75 Mg alloy increases with the increase of the revolving speed and applied load. However, under a high revolving speed of 800 r/min, Al-10 Si-5 Cu-0.75 Mg alloy still has good wear resistance. The wear rate of the Al-10 Si-5 Cu-0.75 Mg alloy under 15 N applied load increases only by 291% compared with under 5 N applied load, which is mild wear. The average friction coefficient changes from 0.35 to 0.40, and the change is small over time, which indicates a strong stability. Meanwhile, as t he applied load increases, the wear mechanism changes from the abrasive wear and adhesive wear at low applied speed to the delamination wear and oxidative wear at high applied speed.
The dry sliding friction and wear test of T6 treated Al-10 Si-5 Cu-0.75 Mg alloy was performed using UMT-2 tribometer. The wear mechanisms of the alloy under different loads and revolving speeds were analyzed by SEM, XRD and EDS. The results reveal that the wear rate of Al-10 Si-5 Cu-0.75 Mg alloy increases with the increase of the revolving speed and applied load. However, under a high revolving speed of 800 r/min, Al-10 Si-5 Cu-0.75 Mg alloy still has good wear resistance. The wear rate of the Al-10 Si-5 Cu-0.75 Mg alloy under 15 N applied load increases only by 291% compared with under 5 N applied load, which is mild wear. The average friction coefficient changes from 0.35 to 0.40, and the change is small over time, which indicates a strong stability. Meanwhile, as t he applied load increases, the wear mechanism changes from the abrasive wear and adhesive wear at low applied speed to the delamination wear and oxidative wear at high applied speed.
引文
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[3]Liu Wei(刘伟).Microstructure and Properties Research of ADC12 High Strength Aluminum Alloy on Cylinder Block of Automobile Engine(汽车发动机缸体用ADC12高强韧铝合金组织与性能研究)[D].Taiyuan:North University of China,2016
[4]Shaha S K,Czerwinski F,Kasprzak W et al.Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science[J],2016,47A(5):2396
[5]Wang Zhengjun(王正军),Si Naichao(司乃潮),Wang Hongjian(王宏健)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2017,46(1):164
[6]Timelli Giulio,Caliari Daniele,Rakhmonov Jovid.Journal of Materials Science&Technology[J],2016,32(6):515
[7]Choi S W,Kim Y M,Lee K M et al.Journal of Alloys and Compounds[J],2014,617:654
[8]Liang Chao(梁超),Liu Baochuan(刘保串),Zhu Pantuo(祝攀拓)et al.Foundry(铸造)[J],2016(8):725
[9]Jin Yunxue(金云学),Tong Qiangqiang(童强强),Wang Xiaoya(王小丫).Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2014,43(6):1352
[10]Gao Peng.Journal of Materials Science and Engineering[J],2012(5):654
[11]Zhang Qun(张群).Application of Microarc Oxidation to Wear Resistant Processing of Inner Surface on Steam Cylinder(微弧氧化技术在铝制缸体内表面耐磨处理中的应用)[D].Xi’an:Xi’an University of Technology,2007
[12]Zhang Guangyao(张光耀),Wang Chenglei(王成磊),Gao Yuan(高原)et al.Rare Metal Materials and Engineering(稀有金属材料与工程)[J],2015,44(5):1229
[13]Lin Gaoyong(林高用),Lei Yuxia(雷玉霞),Guo Daoqiang(郭道强)et al.The Chinese Journal of Nonferrous Metals(中国有色金属学报)[J],2014,24(3):584
[14]Mohamed A M A,Samuel F H,Saleh A K.Materials Science and Engineering A[J],2013,577:64
[15]Salleh M S,Omar M Z,Syarif J.Journal of Alloys and Compounds[J],2015,621:121
[16]Li Runxia(李润霞),Zhang Lei(张磊),Liu Lanji(刘兰吉)et al.Journl of Aeronautical Materials(航空材料学报)[J],2015,35(1):25
[17]Li Yushan(李玉山),Si Naichao(司乃潮),Liu Guanglei(刘光磊)et al.Transactions of Materials and Heat Treatment(材料热处理学报)[J],2017,38(1):50