| A New-type of Cermets Cutter with Nano-TiN Addition： Microstructure, Mechanical and Cutting Properties |
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| 作者姓名： | LIU Ning XU Yudong SHI Min LI Zhenhong ZHOU Jie XIE Feng CHEN Minghai |
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| 作者单位： | [1]Department of Materials Science and Engineering, Hefei University of Technology, Hefei 230009, China [2]Department of Mechanical and Automobile Engineering, Hefei University of Technology, Hefei 230009, China |
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| 基金项目： | 中国科学院资助项目;安徽省自然科学基金 |
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| 摘 要： | The microstructure and mechanical properties of a new-type of cermets cutter （ tool A ） with nano- TiN modification and its cutting properties in cutting gray cast iron are investigated. SEM and TEM observatioas of the microstructure of the above material reveal that nano- TiN modified cermets possess a finer microstructare than conventional cermets. In the cutting tests, for comparison, cemented carbide cutter （ YG8, tool B） was also utilized. The cutting results show that the cutting properties of tool A are superior to those of tool B. It is also Jound that the predominant failare mode of tool A is normal wear and micro-spalling under lower cutting quantities, and that chipping occurs under higher cutting quanthies . SEM analysis reveals that cohesion, oxidation and diffusion wear become very apparent at a higher cutting speed. On the contrary, grain wear also exists but is not apparent.
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| 收稿时间： | 2004-02-26 |
| 修稿时间： | 2005-12-23 |
A new-type of cermets cutter with nano-TiN addition: Microstructure mechanical and cutting properties |
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| LIU Ning XU Yudong SHI Min LI Zhenhong ZHOU Jie XIE Feng CHEN Minghai.A new-type of cermets cutter with nano-TiN addition: Microstructure mechanical and cutting properties[J].Journal of Wuhan University of Technology. Materials Science Edition,2006,21(1):63-67. |
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| Authors: | Liu Ning Ph D Xu Yudong Shi Min Li Zhenhong Zhou Jie Xie Feng Chen Minghai |
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| Affiliation: | (1) Department of Materials Science and Engineering, Hefei University of Technology, 230009 Hefei, China;(2) Department of Mechanical and Automobile Engineering, Hefei University of Technology, 230009 Hefei, China |
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| Abstract: | The microstructure and mechanical properties of a new-type of cermets cutter (tool A) with nano-TiN modification and its cutting properties in cutting gray cast iron are investigated. SEM and TEM observations of the microstructure of the above material reveal that nano-TiN modified cermets possess a finer microstructure than conventional cermets. In the cutting tests, for comparison, cemented carbide cutter (YG8, tool B) was also utilized. The cutting results show that the cutting properties of tool A are superior to those of tool B. It is also found that the predominant failure mode of tool A is normal wear and micro-spalling under lower cutting quantities, and that chipping occurs under higher cutting quantities. SEM analysis reveals that cohesion, oxidation and diffusion wear become very apparent at a higher cutting speed. On the contrary, grain wear also exists but is not apparent. |
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| Keywords: | microstructure cermets nano- TiN additions cutting properties failure mode |
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