海水环境下2507超级双相不锈钢微动磨损性能研究
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摘要
采用SRV-IV微动摩擦磨损试验机研究在干摩擦和水溶液介质中微动振幅对2507超级双相不锈钢微动磨损行为的影响,利用三维轮廓仪和扫描电子显微镜分别对试样的磨痕深度、磨损体积和磨痕表面微观形貌进行表征分析。结果表明:在干摩擦下,随振幅增加微动运行区域发生了由部分滑移区向滑移区的转变,摩擦因数随振幅的增加先增大后趋于稳定,磨痕深度和磨损体积随振幅的增加而增大,磨损机制由局部氧化磨损、局部疲劳磨损转变为氧化磨损、黏着磨损和剥落磨损;水溶液中,海水中摩擦因数随振幅的波动较去离子水中的大,且海水中由于存在腐蚀与磨损交互作用,磨痕深度和磨损体积也都比去离子水中的略大,磨损机制主要是轻微氧化磨损、磨粒磨损伴随疲劳磨损。
The fretting wear of 2507 super duplex stainless steel under various amplitude was studied in the air and aqueous solutions using the SRV-IV wear testing machine.The 3 D optical microscope and scanning electron microscope were used to analyze the worn depth,worn volume and worn surface morphology.Results show that under the condition of dry friction,the fretting regime is gradually transformed from partial slip to gross slip,and the friction coefficient is increased first and then becomes stable with the increasing of fretting amplitude,and the wear depth is increased with the increasing of fretting amplitude.The wear mechanism is transformed from the mild oxidation and local fatigue damage to the combination damage of oxidation,adhesion and delamination wear under the condition of dry friction.In aqueous solutions medium,the fluctuation of friction coefficient with the fretting amplitude in seawater is larger than that in deionized water,due to the synergistic effect of corrosion and wear in seawater,the worn depth and worn volume are also slight larger than those in deionized water.The mild oxidation wear,abrasive wear with fatigue wear are dominated under aqueous solutions.
The fretting wear of 2507 super duplex stainless steel under various amplitude was studied in the air and aqueous solutions using the SRV-IV wear testing machine.The 3 D optical microscope and scanning electron microscope were used to analyze the worn depth,worn volume and worn surface morphology.Results show that under the condition of dry friction,the fretting regime is gradually transformed from partial slip to gross slip,and the friction coefficient is increased first and then becomes stable with the increasing of fretting amplitude,and the wear depth is increased with the increasing of fretting amplitude.The wear mechanism is transformed from the mild oxidation and local fatigue damage to the combination damage of oxidation,adhesion and delamination wear under the condition of dry friction.In aqueous solutions medium,the fluctuation of friction coefficient with the fretting amplitude in seawater is larger than that in deionized water,due to the synergistic effect of corrosion and wear in seawater,the worn depth and worn volume are also slight larger than those in deionized water.The mild oxidation wear,abrasive wear with fatigue wear are dominated under aqueous solutions.
引文
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[2]NILSSON J O.Super duplex stainless steels[J].Materials Science and Technology,1992,8:685-700.
[3]郑传波,申小兰,唐祝君.固溶温度对2507双相不锈钢组织与耐蚀性能的影响[J].金属热处理,2015,40(8):124-128.ZHENG C B,SHEN X L,TANG Z J.Effect of solution treatment temperature on phase structure and corrosion resistance of 2507duplex stainless steel[J].Heat Treatment of Metals,2015,40(8):124-128.
[4]INVERNIZZI A J,SIVIERI E,TRASATTI S P.Corrosion behaviour of duplex stainless steels in organic acid aqueous solutions[J].Materials Science and Engineering A,2008,485:234-242.
[5]SRIDHAR N,KOLTS J,FLASCHE L H.A duplex stainless steel for chloride environments[J].Journal of metals,1985,37(3):31-35.
[6]HAN G F,JIANG P F,WANG J Z,et al.Effects of Na Cl concentration on wear-corrosion behavior of SAF 2507 super duplex stainless steel[J].RSC Advances,2016,6:111261-111268.
[7]TAN H,JIANG Y M,DENG B,et al.Effect of annealing temperature on the pitting corrosion resistance of super duplex stainless steel UNS S32750[J].Materials Characterization,2009,60:1049-1054.
[8]FARGAS G,MESTRA A,MATEO A.Effect of sigma phase on the wear behavior of a super duplex stainless steel[J].Wear,2013,303:84-590.
[9]EZUBER H M,HOUD A E,SHAWEAH F E.Effects of sigma phase precipitation on seawater pitting of duplex stainless steel[J].Desalination,2007,207:268-275.
[10]POKHMURS V I,DOVHUNYK V M.Tribocorrosion of stainless steel[J].Materials Science,2010,46:87-96.
[11]LI J C,WU T Y,RIQUIER Y.σPhase precipitation and its effect on the mechanical properties of a super duplex stainless steel[J].Materials Science and Engineering,1994,A174:149-156.
[12]王建章,陈贝贝,阎逢元.海水组分对海水润滑性能的影响[J].润滑与密封,2011,36(11):1-5.WANG J Z,CHEN B B,YAN F Y.Influence of seawater constituents on the lubrication effect of seawater[J].Lubrication Engineering,2011,36(11):1-5.
[13]DING H Y,DAI Z D,ZHANG Y,et al.Corrosive fretting wear behavior of a titanium alloy TC11 in artificial seawater[C]//Proceedings of the 5th China International Symposium on Tribology.Beijing,2008:323-326.
[14]DING H Y,ZHOU G H,HUI D.Friction and wear performance of an aluminium alloy in artificial seawater[J].Engineering Tribology,2011,225:43-49.
[15]周仲荣,VINCENT L.微动磨损[M].北京:科学出版社,2002.
[16]SATO J,SHIMA M.Fretting wear in seawater[J].Wear,1986,110:227-237.
[17]LI J,LU Y H.Effects of displacement amplitude on fretting wear behaviors and mechanism of Inconel 600 alloy[J].Wear,2013,304:223-230.
[18]范娜,王云霞,王秋凤,等.载荷对304不锈钢微动磨损性能的影响[J].摩擦学学报,2016,36(5):269-275.FAN N,WANG Y X,WANG Q F,et al.Effect of load on fretting wear behaviors of 304 stainless steels[J].Tribology,2016,36(5):269-275.