超声表面滚压处理铝合金钻杆的高温摩擦学性能
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摘要
为了提高铝合金钻杆的耐磨性,利用超声表面滚压技术(USRP)对2219铝合金钻杆材料进行表面强化处理。采用透射电子显微镜(TEM)表征了USRP处理后铝合金的晶粒大小,采用扫描电子显微镜(SEM)、X射线衍射仪(XRD)和显微硬度计测量了强化层的微观形貌、相组成和显微硬度,并利用高温摩擦磨损试验机评价了试样的摩擦学性能,对磨副为玛瑙球。结果表明,经USRP处理后2219铝合金表面形成了纳米晶和厚度约500μm的塑性强化层,表面硬度由120 HV0.05提高至190 HV0.05。随着摩擦磨损试验温度的升高,未处理试样和USRP试样的平均摩擦因数和磨损率都逐渐增大。在相同试验温度下,USRP试样的平均摩擦因数和磨损率均小于未处理试样的。未处理试样和USRP试样的磨损机制主要是黏着磨损和磨粒磨损。
To improve the wear resistance of aluminum drill pipe, the ultrasonic surface rolling processing(USRP) was used to modify the surface strength of the 2219 aluminum alloy. The grain size of the sample treated by USRP was measured by TEM.Morphologies, phase compositions and microhardness were conducted by SEM, XRD and micro-hardness tester, respectively.The tribological properties of untreated and USRP samples were evaluated by a high temperature tribometer. The counter tribopair was an agate ball. The results showed that the nano-sized grain and a plastic reinforcement layer with a thickness of500 μm are produced on the surface of aluminum alloy by USRP treatment. The surface hardness of the USRP sample is improved from 120 HV0.05 to 190 HV0.05. The average friction coefficient and wear rate of untreated and URSP samples rise with the increase of the temperature. The average friction coefficient and the wear rate of URSP samples are lower than those of the untreated samples at the same experimental temperature. The wear mechanisms of the untreated and USRP samples are adhesive wear and abrasive wear.
To improve the wear resistance of aluminum drill pipe, the ultrasonic surface rolling processing(USRP) was used to modify the surface strength of the 2219 aluminum alloy. The grain size of the sample treated by USRP was measured by TEM.Morphologies, phase compositions and microhardness were conducted by SEM, XRD and micro-hardness tester, respectively.The tribological properties of untreated and USRP samples were evaluated by a high temperature tribometer. The counter tribopair was an agate ball. The results showed that the nano-sized grain and a plastic reinforcement layer with a thickness of500 μm are produced on the surface of aluminum alloy by USRP treatment. The surface hardness of the USRP sample is improved from 120 HV0.05 to 190 HV0.05. The average friction coefficient and wear rate of untreated and URSP samples rise with the increase of the temperature. The average friction coefficient and the wear rate of URSP samples are lower than those of the untreated samples at the same experimental temperature. The wear mechanisms of the untreated and USRP samples are adhesive wear and abrasive wear.
引文
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[2]Aquatic Company.Maurer Engineering Inc.1999.Development of aluminum drill pipe in Russia(Final Report TR99-23)[R].Implement Russian Aluminum Drill Pipe and Retractable Drilling Bits into the USA,Contract NO:DE-FG26-98FT40128.
[3]葛灵丹.7075铝合金摩擦磨损行为及磨损机理研究[D].镇江:江苏大学,2011.GE L D.Wear behaviors and mechanisms of 7075 alloy[D].Zhenjiang:Jiangsu University,2011(in Chinese).
[4]WILSON S,ALPAS A T.Effect of temperature on the sliding wear performance of Al alloys and Al matrix composites[J].Wear,1996,196:270-278.
[5]WILSON S,ALPAS A T.Thermal effects on mild wear transitions in dry sliding of an aluminum alloy[J].Wear,1999,225-229:440-449.
[6]DEUIS R L,SUBRAMANIAN C,YELLUP J M.Dry sliding wear of aluminum composites-A reviewer[J].Composites Science and Technology,1997,57:415-435.
[7]SINGH J,ALPAS A T.High-temperature wear and deformation processes in metal matrix composites[J].Metallurgical and Materials Transactions A-Physical Metallurgy and Materials Science,1996,27(10):3135-3148.
[8]陈岁元,李海雄,杨弥珺,等.纳米Si C增强铝合金表面阳极氧化膜的组织与性能[J].东北大学学报(自然科学版),2011,32:952-955.CHEN S Y,LI H X,YANG M J,et al.Structure and performance of anode oxide films on the surface of aluminum alloy reinforced by nano-Si C[J].Journal of Northeastern University(Natural Science Edition),2011,32:952-955(in Chinese).
[9]VISSUTIPITUKUL P,AIZAWA T.Wear of plasma-nitrided aluminum alloys[J].Wear,2005,259:482-489.
[10]ALIDOKHT S A,ABDOLLAH-ZADEH A,SOLEYMANIS,et al.Evaluation of microstructure and wear behavior of friction stir processed cast aluminum alloy[J].Materials Characterization,2012,63:90-97.
[11]徐滨士,刘世参,梁秀兵.纳米表面工程的进展与展望[J].机械工程学报,2003,39(10):21-26.XU B S,LIU S C,LIANG X B.Progress and prospect of nano-materials surface engineering[J].Journal of Mechanical Engineering,2003,39(10):21-26(in Chinese).
[12]AMANOV A.Improvement of the tribological properties of Al 6061-T6 alloy under dry sliding conditions[J].Tribology International,2013,64:24-32.
[13]AHN D,HE Y,WAN Z,et al.Effect of ultrasonic nanocrystalline surface modification on the microstructural evolution and mechanical properties of Al5052 alloy[J].Surface&Interface Analysis,2012,44(11/12):1415-1417.
[14]宋宁霞.超声金属表面纳米化及摩擦磨损性能研究[D].天津:天津大学,2007.SONG N X.The research of metal surface nanocrystallization and its rubbing and wearing performance by ultrasonic processing[D].Tianjin:Tianjin University,2007(in Chinese).
[15]梁健,李鑫淼,王汉宝,等.连续循环系统在科学超深井中的需求分析[J].探矿工程(岩土钻掘工程),2015,42(4):1-5.LIANG J,LI X M,WANG H B,et al.Requirement analysis on continuous circulation system for scientific ultra-deep drilling[J].Lexploration Engineering(Rock&Soil Drilling and Tunneling),2015,42(4):1-5(in Chinese).
[16]SHE D S,YUE W,FU Z Q,et al.The effect of nitriding temperature on hardness and microstructure of die steel pretreated by ultrasonic cold forging technology[J].Materials&Design,2013,49:392-399.
[17]WANG Y Y,YUE W,SHE D S,et al.Effects of surface nanocrystallization on tribological properties of 316L stainless steel under Mo DTC/ZDDP lubrications[J].Tribology International,2014,79:42-51.