不同蠕滑率下ER8车轮钢摩擦磨损性能分析  

Performance Analysis of Friction and Wear of ER8 Wheel Steel Under Different Creep Rates

作　　者：赵海[1] 贺晨宇 霍文文 高伟 刘鹏涛[2] 刘学华 ZHAO Hai;HE Chenyu;HUO Wenwen;GAO Wei;LIU Pengtao;LIU Xuehua(Technical Center of Ma'anshan Iron and Steel Co.,Ltd.,Ma'anshan Anhui 243003,China;School of Materials Science and Engineering,Dalian Jiaotong University,Dalian Liaoning 116028,China;Key Components of Rail Transit Anhui Provincial Technology Innovation Center,Ma'anshan Anhui 243003,China)

机构地区：[1]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243003 [2]大连交通大学材料科学与工程学院,辽宁大连116028 [3]轨道交通关键零部件安徽省技术创新中心,安徽马鞍山243003

出　　处：《高速铁路新材料》2025年第2期1-6,共6页Advanced Materials of High Speed Railway

基　　金：国家重点研发计划课题(2023YFA1609201)。

摘　　要：利用GPM-40滚动接触疲劳试验机研究ER8车轮钢在不同蠕滑率下的摩擦磨损性能,分析试样磨损量、摩擦系数、显微硬度、磨损形貌及微观组织变化,探讨蠕滑率对车轮钢摩擦磨损行为的影响规律。结果表明:随着蠕滑率的增大,ER8车轮钢的磨损量显著增加,摩擦系数也呈现增大的趋势;滚动摩擦磨损试验后,车轮钢试样表面硬度显著升高;随蠕滑率增大,总硬化层深度有所增加,但表层硬度降低;随着运行转数的增加,试样表面磨损由犁沟磨损、黏着磨损演变为疲劳磨损,并伴有氧化磨损;蠕滑率增大导致磨损量增加,试样剧烈塑性变形层的厚度减小;随蠕滑率增大,表面疲劳裂纹的数量增多,但裂纹长度明显减小。The friction and wear properties of ER8 wheel steel under different creep rates were studied using the GPM-40 rolling contact fatigue testing machine.The wear amount,friction coefficient,microhardness,wear morphology,and microstructure changes of the samples were analyzed,and the influence of creep rate on the friction and wear behavior of wheel steel was explored.The results show that with the increase of creep rate,the wear of ER8 wheel steel significantly increases,and the friction coefficient also shows an increasing trend;After the rolling friction and wear test,the surface hardness of the wheel steel sample significantly increased;As the creep rate increases,the total depth of the hardened layer increases,but the surface hardness decreases;As the operating cycles increases,the surface wear of the sample evolves from plow groove wear and adhesive wear to fatigue wear,accompanied by oxidative wear;The increase in creep rate leads to an increase in wear,and the thickness of the severe plastic deformation layer of the sample decreases;As the creep rate increases,the number of surface fatigue cracks increases,but the crack length significantly decreases.

关 键 词：ER8车轮钢 蠕滑率 摩擦磨损 微观组织 

分 类 号：TG142.21[一般工业技术—材料科学与工程]