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材料工程  2013, Vol. 0 Issue (7): 66-72    DOI: 10.3969/j.issn.1001-4381.2013.07.013
  材料与工艺 本期目录 | 过刊浏览 | 高级检索 |
车轴钢表面渗氮/渗硫复合层的扭动微动磨损研究
顾和根1, 蔡振兵1, 岳文2, 彭金方1, 朱旻昊1
1. 西南交通大学 牵引动力国家重点实验室 摩擦学研究所, 成都 610031;
2. 中国地质大学(北京) 工程技术学院, 北京 100086
Torsional Fretting Wear of Sulfurized-nitrided Layers Prepared on Axle Steel
GU He-gen1, CAI Zhen-bing1, YUE Wen2, PENG Jin-fang1, ZHU Min-hao1
1. Tribology Research Institute, Traction Power State Key Laboratory, Southwest Jiaotong University, Chengdu 610031, China;
2. School of Engineering and Technology, China University of Geosciences, Beijing 100083, China
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摘要 通过对 LZ50车轴钢表面进行渗氮/渗硫复合处理,在其表面形成渗氮/渗硫复合层。在对复合层进行表征的基础上,研究了复合层和基体在干态不同角位移幅值下的扭动微动磨损行为。结果表明:渗氮/渗硫复合层由ε-Fe2-3N,γ'-Fe4N,FeS和FeS2相组成;复合层改变了LZ50钢的扭动微动运行区域,使得混合区减小,滑移区向小角位移方向移动;由于高硬度的渗氮层支撑和渗硫层润滑作用,复合层的摩擦扭矩在部分滑移区和滑移区低于LZ50钢;与LZ50钢相比,复合层的磨损程度明显降低,在部分滑移区损伤轻微,在混合区和滑移区,复合层的损伤主要表现为剥层,磨粒磨损和氧化磨损。
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关键词 摩擦磨损微动磨损扭动微动渗氮/渗硫复合处理    
Abstract:The sulfurized-nitrided layers were prepared on the surface of LZ50 steel by sulfurized-nitrided duplex processes. Base on the characterizations of the sulfurized-nitrided layers, the torsional fretting wear tests of the sulfurized-nitrided layers and LZ50 steel were carried out in dry condition under different torsional angular displacement amplitudes. The results indicated the sulfurized-nitrided layers were composed of ε-Fe2-3N,γ'-Fe4N, FeS and FeS2 phases. The fretting regimes of the sulfurized-nitrided layers were changed, i.e. the range of the mixed fretting regime was diminished, and the slip regime shifted to the direction of smaller angular displacement amplitude. The friction torques of the sulfurized-nitrided layers were lower than that of the substrate in the partial slip and slip regimes due to the support of the hard nitrided layer and the lubricating of the sulfide layer. Comparing with the substrate, the wear of material reduced greatly for the sulfurized-nitrided layers. The damage in the partial slip regime was slight, but in the mixed and slip regimes the damage mechanisms of the modified layer were mainly delamination, abrasive wear and oxidative wear.
Key wordsfriction and wear    fretting wear    torsional fretting    sulfurized-nitrided duplex processes
收稿日期: 2012-04-14      出版日期: 2013-07-20
1:  TH117  
基金资助:

国家自然科学基金资助项目(51025519,51005192);长江学者和创新团队发展计划资助(IRT1178)

通讯作者: 朱旻昊(1968-),男,教授,博导,主要从事表面工程及摩擦学研究,联系地址:西南交通大学牵引动力国家重点实验室摩擦学研究所(610031),E-mail:zhuminhao@swjtu.cn     E-mail: zhuminhao@swjtu.cn
作者简介: 顾和根(1986-),男,硕士,现从事高速铁路材料摩擦学行为研究,联系地址:西南交通大学牵引动力国家重点实验室摩擦学研究所(610031),E-mail:guhegen@126.com
引用本文:   
顾和根, 蔡振兵, 岳文, 彭金方, 朱旻昊. 车轴钢表面渗氮/渗硫复合层的扭动微动磨损研究[J]. 材料工程, 2013, 0(7): 66-72.
GU He-gen, CAI Zhen-bing, YUE Wen, PENG Jin-fang, ZHU Min-hao. Torsional Fretting Wear of Sulfurized-nitrided Layers Prepared on Axle Steel. Journal of Materials Engineering, 2013, 0(7): 66-72.
链接本文:  
http://jme.biam.ac.cn/CN/10.3969/j.issn.1001-4381.2013.07.013      或      http://jme.biam.ac.cn/CN/Y2013/V0/I7/66
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