D2/U71Mn轮轨材料的滑动磨损实验研究  

Study on Sliding Wear Experiment of D2/U71Mn Wheel and Rail Material

作　　者：温爱玲[1,2] 任冲 赵秀娟 WEN Ailing;REN Chong;ZHAO Xiujuan(School of Mechanical Engineering,Dalian Jiaotong University,Dalian 116028,China;Key Laboratory of Key Material of Rail Transit in Liaoning Province,Dalian Jiaotong University,Dalian 116028,China)

机构地区：[1]大连交通大学机械工程学院,辽宁大连116028 [2]大连交通大学辽宁省轨道交通关键材料重点实验室,辽宁大连116028

出　　处：《热加工工艺》2021年第16期29-32,共4页Hot Working Technology

基　　金：国家重点基础研究发展规划项目(973)(2015CB654802)。

摘　　要：通过对D2/U71Mn轮轨材料滑动磨损实验,研究了轮轨滑动磨损下的磨损规律以及磨损对性能的影响。结果表明:在轮轨滑动磨损初期,发生粘着磨损;进一步因变形强化,粘着磨损转化为磨粒磨损,并都伴有不同程度的损伤。U71Mn钢轨试样磨损初期残余压应力迅速增加,1000 r后增加平缓并趋于稳定,腐蚀深度达20μm时残余压应力急剧减小。轮轨磨损的犁沟、脊缘使得轮轨试样接触不充分,造成磨损系统不规则自激振动,产生磨损噪声。Based on the sliding wear test of D2/U71 Mn wheel and rail material, the wear rule under wheel and rail sliding wear and the influence of the wear on the performance were preliminarily obtained. The results show that: the adhesive wear occurs at the initial stage of wheel and rail sliding wear. Further, due to deformation and strengthening, the adhesive wear is transformed into abrasive wear, and all are accompanied by different degrees of damage. The residual compressive stress of U71 Mn steel rail specimens increases rapidly at the initial stage of wear, and after 1000 r, the compressive stress gradually increases and stabilizes, and the residual compressive stress decreases sharply at the corrosion depth of 20 μm. The worn furrows and ridges of the wheel and rail make insufficient contact between the wheel and rail specimens, which can cause irregular self-excited vibration of the wear system to generate wear noise.

关 键 词：轮轨关系 滑动磨损 残余应力 磨损噪声 

分 类 号：TG115.58[金属学及工艺—物理冶金]