Abstract:The rolling wear and damage characteristics of wheel and rail materials under different axle-loads were investigated using a WR-1 wheel/rail rolling wear testing apparatus. The results show that both of the wear rates of wheel and rail materials rise linearly with the increase of axle-load, and the wear rate of rail specimen is larger than wheel. The hardening rates of wheel and rail specimens firstly increase obviously and then keep stable along with the test time. With the increase of axle-load, the depth of plastic deformation layer and the hardness rate of wheel and rail specimens increase. The hardness rate of wheel is larger than rail. The surface damage morphology of wheel specimen is different from rail. For the surface damage morphology of wheel specimen consists of fatigue cracks perpendicular to rolling direction, however, the rail surface damage morphology is dominated by cracks and spalls. The surface damage of the wheel and rail specimens gets increasingly severe along with the in crease of axle-load. Debris, which comes from fatigue cracks fracture of wheel specimen and spalling of rail, is composed of Fe2O3 and martensite. With the increase of axle-load, the size of debris increases, the components and their content, however, have no obvious change.
丁昊昊, 王文健, 郭俊, 刘启跃, 朱旻昊. 轴重对轮轨材料滚动磨损与损伤行为影响[J]. 材料工程, 2015, 43(10): 35-41.
DING Hao-hao, WANG Wen-jian, GUO Jun, LIU Qi-yue, ZHU Min-hao. Effect of Axle-load on Rolling Wear and Damage Behaviors of Wheel and Rail Materials. Journal of Materials Engineering, 2015, 43(10): 35-41.
[1] CORREA N,OYARZABAL O,VADILLO E G,et al.Rail corrugation development in high speed lines[J].Wear,2011,271:2438-2447.
[2] DIRKS B,ENBIOM R.Prediction model for wheel profile wear and rolling contact fatigue[J].Wear,2011,271:210-217.
[3] REN L,XIE G,IWNICKI S D.Properties of wheel/rail longitudinal creep force due to sinusoidal short pitch corrugation on railway rails[J].Wear,2012,284-285:73-81.
[4] 温泽峰,金学松,刘兴奇.两种型面轮轨滚动接触蠕滑率和摩擦功[J].摩擦学学报,2001,21(4):288-292. WEN Z F,JIN X S,LIU X Q.Creepages and friction work of wheelset and track with two type profiles in rolling contact[J].Tribology,2001,21(4):288-292.
[5] WANG W J,ZHONG W,LIU Q Y,et al. Investigation on rolling wear and fatigue properties of railway rail [J]. Proceedings of the Institution of Mechanical Engineers,Part J: Journal of Engineering Tribology, 2009,223(7):1033-1039.
[6] 邓建辉,刘启跃,王飞龙,等.车速对钢轨接触疲劳损伤的影响及高速线路钢轨选用[J].钢铁钒钛,2006,27(3):48-54. DENG J H,LIU Q Y,WANG F L,et al.Influence of train velocity on rail contact fatigue damage and how to select rail for high-speed[J].Iron Steel Vanadium Titanium,2006,27(3):48-54.
[7] 王步康,董光能,刘永红,等.钢轨短波长波浪形磨损的安定性分析[J].摩擦学学报,2004,24(1):70-73. WANG B K,DONG G N,LIU Y H,et al.Shakedown analysis of rolling contact surface with short-wavelength corrugation [J].Tribology,2004,24(1):70-73.
[8] DONZELLA G,FACCOLI M,GHIDINI A,et al.The competitive role of wear and RCF in a rail steel [J].Engineering Fracture Mechanics,2005,72:287-308.
[9] 郭俊,赵鑫,金学松,等.全制动工况下轮轨热-机耦合效应的分析[J].摩擦学学报,2006,26(5):489-493. GUO J,ZHAO X,JIN X S,et al.Analysis of wheel/rail thermal-mechanical coupling effects in sliding case[J].Tribology,2006,26(5):489-493.
[10] 丁昊昊,付志凯,郭火明,等.三种钢轨材料与车轮匹配时滚动磨损与损伤行为[J].摩擦学学报,2014,34(3):233-239. DING H H,FU Z K,GUO H M,et al.Rolling wear and damage behaviors between three kinds of rail materials and wheel material[J].Tribology,2014,34(3):233-239.
[11] 宋川,刘建华,彭金方,等.接触应力对车轴钢旋转弯曲微动疲劳寿命的影响[J].材料工程,2014,(2):34-38. SONG C,LIU J H,PENG J F,et al.Effect of contact stress on rotating bending fretting fatigue life of railway axle steel [J].Journal of Materials Engineering,2014,(2):34-38.
[12] GRASSIE S,NILSSION P,BJURSTROM K, et al.Alleviation of rolling contact fatigue on Sweden's heavey haul rialway[J].Wear,2002,253:42-53.
[13] CLAYTON P.Predicting the wear of rails on curves from laboratory data [J].Wear,1995,181-183:11-19.
[14] 王文健,郭俊,刘启跃.接触应力对轮轨材料滚动摩擦磨损性能影响[J].摩擦学学报,2011,31(4):352-356. WANG W J,GUO J,LIU Q Y.Effect of contact stress on rolling friction and wear behavior of wheel-rail materials [J].Tribology,2011,31(4):352-356.
[15] 钟雯.钢轨的损伤机理研究[D].成都:西南交通大学,2011. ZHONG W. Experimental investigation of rail damnification mechanism[D].Chengdu:Southwest Jiaotong University,2011.
[16] 谭晓明,张丹峰,陈跃良,等.基于疲劳裂纹萌生机理的铝合金疲劳寿命可靠性评估方法[J].航空材料学报,2014,34(2):84-89. TAN Xiao-ming,ZHANG Dan-feng,CHEN Yue-liang,et al.Probabilistic method to predict fatigue life based on crack initiating micro-mechanism of aluminum alloy [J].Journal of Aeronautical Materials,2014,34(2):84-89.