测量60Si2Mn钢在拉扭复合载荷作用下的低周微动疲劳特性, 研究了不同轴向循环拉伸应力幅值对微动疲劳寿命、循环软化特性以及摩擦磨损表面和断口形貌的影响。 结果表明, 随着循环拉伸应力幅值的提高, 60Si2Mn钢的微动疲劳寿命降低幅度不同, 发生循环软化的时期不断提前, 完成循环软化的疲劳周期也不断缩短。 同时, 微动摩擦副产生的氧化物磨屑对微动磨损性能有重要影响, 在疲劳前期加剧摩擦磨损, 在疲劳后期减轻摩擦磨损。 微动疲劳裂纹源形成于试样发生微动摩擦磨损的表面, 并出现疲劳台阶。 在扭矩产生的切向剪切应力作用下, 疲劳裂纹沿着与轴向45o角的方向扩展, 最终在断口上留下显著的舌状凸起, 拉应力的幅值越大舌状凸起越明显。
The low cycle fretting fatigue properties of 60Si2Mn were investigated in the condition of tensile-torsion multi-axial loading. The results showed that the tensile stress amplitude affect the fretting fatigue performance significantly. With the tensile stress amplitude increasing, the fretting fatigue life reduced nonlinearly, and the cycle softening occurred earlier and completed in less cycles. Oxide wear debris generated on the fretting wear scars have a significant impact on fretting fatigue, which exacerbated fretting wear in the early-stage of fatigue, and eased the wear later. Fretting fatigue crack initialed on the fretting wear scars, propagated along 45o angle to the axial direction at the existence of tangential shear stress, and eventually left tongue shape protrusion significantly at fracture. The greater the tensile stress amplitude, the bigger the tongue protrusion.
参考文献
| [1] | |
| [2] | J.A.Pape, R.W.Neu, A comparative study of the fretting fatigue behavior of 4340 steel and PH 13-8 Mo stainless steel, International Journal of Fatigue, 29(12), 2219(2007)[2]J.J.Madge, S.B.Leen, P.H.Shipway, A combined wear and crack nucleation-propagation methodology for fretting fatigue prediction, International Journal of Fatigue, 30(9), 1509(2008)[3] D.Nowell, D.A.Hills, D.N.Dai, Energy dissipation and crack initiation in fretting fatigue, Tribology Series, 27, 389(1994) [4]ZHOU Zhongrong, LUO Weili, LIU Jiajun, Recent development in fretting research, Tribology, 17(3), 270(1997)[5](周仲荣, 罗唯力, 刘家浚, 微动摩擦学的发展现状与趋势, 摩擦学学报, 17(3), 270(1997))[6]ZHANG Dong, Trace Analysis in Mechanical Failure (Beijing, National Defense Industry Press, 1996) p.13)[7](张栋, 机械失效的痕迹分析 (北京, 国防工业出版社, 1996)p.13)[8]G.S.Campbell, R.Lahey, A survey of serious aircraft accidents involving fatigue fracture, International, Journal of Fatigue, 6(1), 25(1984)[9]LIU Daoxin, HE Jiawen, Review of factors that influence fretting fatigue (FF) and investigation on FF behavior of Ti-alloy, Acta Aeronautica et Astronautica Sinica, 22(05), 454(2001)[10](刘道新, 何家文, 微动疲劳影响因素及钛合金微动疲劳行为, 航空学报, 22(05), 454(2001))[11]XU Guizhen, LIU Jiajun, ZHOU Zhongrong, Application of surface modification technology in fretting tribology, Tribology, 18(2), 185(1998)[12](徐桂珍, 刘家浚, 周仲荣, 表面改性技术在微动摩擦学领域中的应用, 摩擦学学报, 18(2), 185(1998))[13]LI Shizhuo, DONG Xianglin, Erosion and Fretting Wear in Materails (Beijing, China Machine Press, 1987) p.385[14](李诗卓, 董祥林, 材料的冲蚀磨损与微动磨损 (北京, 机械工业出版社, 1987)p.385)[15]SHENG Guangmin, The observation, verifcation and quantification of cyclic softeningmechanism under low cycle fatigue, Physical Testing and Chemical Analysis Part A: Physical Testing, 33(7), 17(1997)[16](盛光敏, 应变疲劳循环软化机制的观察、确证及定量估测, 理化检验-物理分册, 33(7), 17(1997))[17]TU Chuanjun, CHEN Zhenhua, CHEN Ding, Tribological behavior and wear mechanism of resin-matrix contact strip against copper with electrical current, Transactions of Nonferrous Metals Society of China (English Edition), 18(5), 1157(2008)[18]M.Atapour, F.Ashrafizadeh, Tribology and cyclic oxidation behavior of plasma nitrided valve steel, Surface and Coatings Technology, 202(20), 4922(2008)[19]L.Fouilland, L.Imhoff, A.Bouteville, Composition and tribological characterization of chemically vapour-deposited TiN layer, Surface and Coatings Technology, 100(3), 146(1998)[20] A.Kermanpur, Amin H. Sepehri, S.Ziaei-Rad, Failure analysis of Ti6Al4V gas turbine compressor blades, Engineering Failure Analysis, 15, 1052(2008) |
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