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材料导报  2020, Vol. 34 Issue (18): 18119-18124    https://doi.org/10.11896/cldb.19100007
  金属与金属基复合材料 |
氮碳共渗对ER8车轮钢高温摩擦磨损性能的影响
王宇1, 曾伟1, 韩靖1, 戴光泽1, 赵君文1, 徐忠宣2
1 西南交通大学材料科学与工程学院,成都 610031
2 中车青岛四方机车车辆股份有限公司,青岛 266000
Effect of Nitrocarburizing on High Temperature Friction and Wear Properties of ER8 Wheel Steel
WANG Yu1, ZENG Wei1, HAN Jing1, DAI Guangze1, ZHAO Junwen1, XU Zhongxuan2
1 College of Materials Science and Engineering, Southwest Jiaotong University, Chengdu 610031, China
2 CRRC Qingdao Sifang Co., Ltd., Qingdao 266000, China
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摘要 以ER8车轮钢轮辋材料为研究对象,在570℃下对其进行氮碳共渗,然后利用MMU-5G高温摩擦磨损试验机对未处理试样和氮碳共渗后试样进行了四种不同温度(25℃,300℃,400℃,500℃)的摩擦磨损实验。利用截面显微硬度表征渗层厚度,同时利用激光共聚焦显微镜(VK-9710)和XRD仪观察并分析了共渗层的结构、成分和微观形貌,并对两种试样的磨损性能、粗糙度和磨痕形貌进行了记录分析。结果表明:经氮碳共渗后试样表层显微硬度显著增大;氮碳共渗在环境温度低于400℃时显著增强了材料的磨损性能,在400℃及以上温度时氮碳共渗对降低ER8车轮钢轮辋材料的磨损效果十分有限;磨损形式主要是磨粒磨损、粘着磨损和氧化磨损,未处理试样在25~500℃之间的各个温度区间都存在磨粒磨损,氮碳共渗试样磨粒磨损主要存在于25℃和500℃,而两者氧化磨损和粘着磨损则主要存在于高温环境(300~500℃)下,当温度上升到500℃时,粘着磨损加剧。
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王宇
曾伟
韩靖
戴光泽
赵君文
徐忠宣
关键词:  ER8车轮钢  氮碳共渗  高温摩擦磨损  磨损机制  氧化层    
Abstract: Taking ER8 wheel steel rim material as research object, it was nitrocarburized at 570℃, and then 4 kinds of untreated samples and nitrocarburized samples were tested by MMU-5G high temperature friction and wear tester. Friction and wear experiments in different temperature ranges (25℃, 300℃, 400℃, 500℃). The thickness of the layer was characterized by the microhardness of the section. The structure, composition and morphology of the co-infiltrated layer were observed and analyzed by laser confocal microscopy (VK-9710) and XRD. The wear properties and roughness of the two samples were observed. The degree and wear scar morphology were recorded and analyzed. The results showed that the surface microhardness of the sample increases significantly after nitrocarburizing; the nitrocarburizing significantly enhances the wear performance of the material when the ambient temperature is lower than 400℃, and the nitrocarburizing at 400℃ and above the wear reduction effect of ER8 wheel steel material is very limited; the wear form is mainly abrasive wear, adhesive wear and oxidative wear, and the untreated sample has abrasive wear in various temperature ranges between 25℃ and 500℃. Abrasive wear of infiltrated samples mainly exists at 25℃ and 500℃, while oxidative wear and adhesive wear of both are mainly present in high temperature environment (300—500℃),where the adhesive wear increases with the temperature rise to 500℃.
Key words:  ER8 wheel steel    nitrocarburizing    high temperature friction and wear    wear mechanism    oxide layer
               出版日期:  2020-09-25      发布日期:  2020-09-12
ZTFLH:  TG178  
  TG115.5+8  
基金资助: 国家重点研发计划(2016YFB1200505-006)
通讯作者:  hanjing@swjtu.edu.cn   
作者简介:  王宇,西南交通大学硕士在读研究生,2017年获得西华大学材料科学与工程专业学士学位,目前研究内容为高速动车组关键零部件服役性能研究。参与项目有CRH3和CRH5型动车组轮轴损伤容限及限速标准研究;基于智能材料的轴承综合监控技术研究;基于材料轮对损伤容限研究;CRH380BG5689车轮损伤检测与损伤机理分析;磨耗多边形车轮硬度测试。
韩靖,西南交通大学副教授,硕士研究生导师。2009年博士毕业于重庆大学材料科学与工程学院,同年在西南交通大学材料科学与工程学院工作至今,同时在重庆大学冶金工程博士后流动站从事微合金钢连铸坯表面微裂纹控制研究工作。在国内外刊物发表学术论文20余篇,其中SCI检索5篇,EI检索5篇。目前从事的项目有高速列车关键材料及部件可靠性(科技支撑项目);高速动车组关键零部件国产化研发(四川省科技厅项目);高速动车组铝合金牵引梁国产化研制;高速动车组转向架推杆国产化研制;装载挖掘机静强度、疲劳强度校核计算,动载荷测试;时速380公里哈大线高寒动车组转向架关键零部件性能评价与检验。
引用本文:    
王宇, 曾伟, 韩靖, 戴光泽, 赵君文, 徐忠宣. 氮碳共渗对ER8车轮钢高温摩擦磨损性能的影响[J]. 材料导报, 2020, 34(18): 18119-18124.
WANG Yu, ZENG Wei, HAN Jing, DAI Guangze, ZHAO Junwen, XU Zhongxuan. Effect of Nitrocarburizing on High Temperature Friction and Wear Properties of ER8 Wheel Steel. Materials Reports, 2020, 34(18): 18119-18124.
链接本文:  
http://www.mater-rep.com/CN/10.11896/cldb.19100007  或          http://www.mater-rep.com/CN/Y2020/V34/I18/18119
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