Suppression of tool wear in diamond turning of steel (Effect of microstructure of carburized steel)

Abstract

Diamond cutting tools show severe wear in turning of steels. In previous paper, it was shown that carbides on ferrite phase, which were precipitated by carburization, suppressed the diamond tool wear. In this paper, detailed distribution of constituents of the carbides was analyzed by EDS (energy-dispersive X-ray spectroscopy). In addition, characteristics of each carbide such as occupancy, diameter, and degree of circularity were measured. Results indicate that those characteristics of the carbides influence suppression of the tool wear.

Keywords

• single crystal diamond tool
• wear
• steel
• ultra-precision cuting
• caburizing
• carbide
• grain boundary