Mo含量对ER8材质车轮组织性能的影响  

Effect of Mo Element Content on Microstructure and Properties of ER8 Wheels

作　　者：庞晋龙 陈刚 李翔 刘学华[2] 高伟 PANG Jinong;CHEN Gang;LI Xiang;LIU Xuehua;GAO Wei(Baowu Group Masteel Rail Transit Materials Technology Company Limited,Ma’anshan Anhui 243000,China;Technology Center,Ma’anshan Iron and Steel Co.,Ltd.,Ma’anshan Anhui 243003,China)

机构地区：[1]宝武集团马钢轨交材料科技有限公司,安徽马鞍山243000 [2]马鞍山钢铁股份有限公司技术中心,安徽马鞍山243003

出　　处：《高速铁路新材料》2023年第5期75-79,共5页Advanced Materials of High Speed Railway

基　　金：安徽省科技重大专项(202003A05020038)。

摘　　要：研究了Mo含量对高速动车组用ER8材质车轮组织性能的影响,以寻求提升车轮综合性能的新途径。结果表明:在EN 13262:2020标准规定的化学成分要求范围内,添加少量Mo元素可明显细化珠光体片间距,使车轮强度、硬度有所提高,与晶粒细化机制相配合,使车轮具有更好的强韧配合关系,易于实现车轮轮辋全截面组织一致性,从而有利于改善车轮磨损性能。The effect of Mo element content on the microstructure and properties of ER8 wheel for high-speed EMU was studied,in order to find a new way to improve the comprehensive performance of wheel.The research results show that within the chemical composition requirements of EN 13262:2020 standard,a small amount of Mo elcment added can significantly refine pearlite spacing,and significantly increase the strength and hardness.Matching the grain refining mechanism,the wheel has better toughness cooperate relationship,easy to realize the wheel rim total cross-section organization consistency,thus,the rolling contact fatigue and wear performance of high-speed wheels can be improved.

关 键 词：高速动车组 ER8材质车轮 Mo元素 组织 性能 

分 类 号：TG142.1[一般工业技术—材料科学与工程] U266[金属学及工艺—金属材料]