载荷对锡青铜凹坑织构表面磨损特性的影响
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摘要
利用销盘式磨损试验,研究了载荷对锡青铜钻削凹坑织构试样表面磨损特性的影响。测试了摩擦因数和磨损量,用三维数字显微镜观察试样表面磨损情况,并与无织构普通试样进行对比。结果表明,在低载荷条件下钻削凹坑织构的容屑能力和凹坑边缘硬化现象可以提高锡青铜试样表面的磨损性能;而在高载荷条件下,钻削凹坑边缘的撞裂剥落、凹坑边缘应力较大和对摩球微切削等综合作用降低了锡青铜试样表面的摩擦磨损性能。
Pin-on-disc wear experiments were carried out to analyze influence of loads on wear properties of tin bronze surface with drilled dimple texture.The friction coefficients and wear weight loss were measured.The worn surface morphologies of the alloy were observed with 3 Ddigital microscope.Drilled dimple textured specimens were compared with non-textured specimens.Experimental results reveal that the wear debris trapping function and edge hardening of dimples can improve the wear properties of tin bronze specimen surface under lower load conditions.However,the wear properties of tin bronze specimen surface can be decreased under higher load conditions,which are attributed to crack and peeling of dimple edge,high stresses of dimple edge and micro-cutting effect of coupled ball.
Pin-on-disc wear experiments were carried out to analyze influence of loads on wear properties of tin bronze surface with drilled dimple texture.The friction coefficients and wear weight loss were measured.The worn surface morphologies of the alloy were observed with 3 Ddigital microscope.Drilled dimple textured specimens were compared with non-textured specimens.Experimental results reveal that the wear debris trapping function and edge hardening of dimples can improve the wear properties of tin bronze specimen surface under lower load conditions.However,the wear properties of tin bronze specimen surface can be decreased under higher load conditions,which are attributed to crack and peeling of dimple edge,high stresses of dimple edge and micro-cutting effect of coupled ball.
引文
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[2]DING T,CHEN G X,BU J,et al.Effect of temperature and arc discharge on friction and wear behaviours of carbon strip/copper contact wire in pantograph-catenary systems[J].Wear,2011,271(9):1 629-1 636.
[3]张迎晖,张兵,杨斌,等.电气机车接触线用Cu-0.1Ag合金的滑动磨损行为[J].特种铸造及有色合金,2014,34(9):997-999.
[4]张君,徐春园.滑动摩擦磨损对铜合金表面的影响[J].甘肃科技,2008(3):50-51.
[5]刘玉文,刘建华.载荷和摩擦速度对多元铜合金摩擦磨损性能的影响[J].热加工工艺,2008(16):41-43.
[6]严诚平,王莉,王权岱,等.不同润湿性锡青铜表面摩擦特性试验研究[J].摩擦学学报,2014(3):297-303.
[7]马晨波,朱华,历建全.摩擦副不同表面织构化的润滑减摩性能试验研究[J].中国矿业大学学报,2010(2):244-248.
[8]KOSZELA W,GALDA L,DZIERWA A,et al.The effect of surface texturing on seizure resistance of a steel-bronze assembly[J].Tribology International,2010,43(10):1 933-1 942.
[9]王莉,严诚平,王权岱,等.金属微结构双疏表面的摩擦特性研究[J].华中科技大学学报(自然科学版),2012(S2):21-25,43.
[10]WANG X L,ADACHI K,OTSUKA K,et al.Optimization of the surface texture for silicon carbide sliding in water[J].Applied Surface Science,2006,253(3):1 282-1 286.
[11]BHUSHAN B.Introduction to Tribology,Second Edition[M].West Sussex:John Wiley&Sons Ltd.,2013.(7):2 293-2 300.
[12]于孟,牛中杰,毛江虹,等.钛镍形状记忆合金冷拉拔的加工硬化及再结晶[J].稀有金属,2015,39(8):680-685.
[13]王先逵.机械加工工艺手册[M].北京:机械工业出版社,2007.
[14]GAO Y,JIE J C,ZHANG P C,et al.Wear behavior of high strength and high conductivity Cu alloys under dry sliding[J].Transactions of Nonferrous Metals Society of China,2015,25
[15]续海峰.粘着磨损机理及其分析[J].机械管理开发,2007(S1):95-96,98.
[16]赵帅,王晓雷.高分子材料机械密封磨损特性及表面织构的影响[J].摩擦学学报,2015(6):761-767.