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材料导报  2020, Vol. 34 Issue (Z2): 407-411    
  金属与金属基复合材料 |
激光淬火40Cr钢的冲击磨损行为研究
陈志凯1,2, 关婷婷1, 李强1, 王井1,2, 员霄1
1 江苏徐工工程机械研究院有限公司,徐州 221004
2 高端工程机械智能制造国家重点实验室,徐州 221004
Impact Abrasive Wear Behaviors of Quenched 40Cr Steel
CHEN Zhikai1,2, GUAN Tingting1, LI Qiang1, WANG Jing1,2, YUN Xiao1
1 Jiangsu Xuzhou Construction Machinery Research Institute, Xuzhou Construction Machinery Group, Xuzhou 221004, China
2 State Key Laboratory of Intelligent Manufacturing of Advanced Construction Machinery, Xuzhou 221004, China
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摘要 本工作采用激光淬火技术来提升40Cr的抗冲击磨损性能,以满足其较高的表面服役性能要求。结果显示,由于激光淬火过程快速加热和冷却的特点,淬火区域组织发生明显的变化。此外,相组成随深度的变化而变化,导致深度方向上的硬度存在差异。通过测试,对比基体与淬火试样的冲击磨损失效形式与作用机理。根据三次重复试验的平均磨耗,对激光淬火试样及基体的抗冲击磨损性能进行定量评定。采用SEM、OM、EDS等手段对磨损表面进行观察和分析,阐明基体与淬火表面的磨损行为与差异。结果表明,冲击磨损过程中,磨粒磨损、冲击效应和滚动接触疲劳是三种典型的失效模式。基体的主要失效机理为磨粒磨损,而冲击效应和滚动接触疲劳则是淬火表面的主要失效模式。
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陈志凯
关婷婷
李强
王井
员霄
关键词:  40Cr  激光淬火  冲击磨损  失效形式    
Abstract: In present paper, to attain the high surface service properties, laser quench technical was used to improve the impact abrasive wear resis-tance of 40Cr. According to the results, because of the rapidly heating and cooling rate of laser quench, the phase transformation was correspondingly taken place, which made the obvious difference between original and quenched 40Cr microstructure. Additionally, the phase compo-site of quenched sample was significantly various in depth. The impact abrasive wear resistance of quenched sample and matrix was experimentally investigated and the improved level was assessed in light of the average mass loss of three repetitive tests. Worn surface was detected by means of SEM, OM and EDS, and indicated the behaviors of quenched and original sample. The results showed that three typical failure modes were performed during the processing of impact abrasive wear, including abrasive wear, impact effect and rolling contact fatigue. Basing on the different worn surface profile, the abrasive wear was the mainly failure mode for original sample, while impact effect and rolling contact fatigue predominated the failure for quenched sample.
Key words:  40Cr    laser quench    impact abrasive wear    failure mode
               出版日期:  2020-11-25      发布日期:  2021-01-08
ZTFLH:  V261.8  
基金资助: 国家重点研发计划(2019YFB2005300;2018YFB1105805)
通讯作者:  chenzhikai2004@126.com   
作者简介:  陈志凯,1988年生,博士学历,现任江苏徐工工程机械研究院有限公司工程师,主要研究方向为金属表面强韧化处理、增材制造、热处理、再制造等技术研究。
引用本文:    
陈志凯, 关婷婷, 李强, 王井, 员霄. 激光淬火40Cr钢的冲击磨损行为研究[J]. 材料导报, 2020, 34(Z2): 407-411.
CHEN Zhikai, GUAN Tingting, LI Qiang, WANG Jing, YUN Xiao. Impact Abrasive Wear Behaviors of Quenched 40Cr Steel. Materials Reports, 2020, 34(Z2): 407-411.
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http://www.mater-rep.com/CN/  或          http://www.mater-rep.com/CN/Y2020/V34/IZ2/407
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