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A new-type of cermets cutter with nano-TiN addition: Microstructure mechanical and cutting properties

  • Liu Ning
  • Xu Yudong
  • Shi Min
  • Li Zhenhong
  • Zhou Jie
  • Xie Feng
  • Chen Minghai
Article

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-spoiling 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.

Key words

microstructure cermets nano-TiN additions cutting properties failure mode 

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Copyright information

© Wuhan University of Technology 2006

Authors and Affiliations

  • Liu Ning
    • 1
  • Xu Yudong
    • 1
  • Shi Min
    • 1
  • Li Zhenhong
    • 1
  • Zhou Jie
    • 1
  • Xie Feng
    • 2
  • Chen Minghai
    • 1
  1. 1.Department of Materials Science and EngineeringHefei University of TechnologyHefeiChina
  2. 2.Department of Mechanical and Automobile EngineeringHefei University of TechnologyHefeiChina

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