Machinability improvement and its mechanism in SUS304 austenitic stainless steel by h-BN addition

Satoshi Emura; Masahiro Kawajiri; Xiaohua Min; Shigeo Yamamoto; Kazuyuki Sakuraya; Kaneaki Tsuzaki

doi:10.2355/tetsutohagane.98.358

Machinability improvement and its mechanism in SUS304 austenitic stainless steel by h-BN addition

Satoshi Emura, Masahiro Kawajiri, Xiaohua Min, Shigeo Yamamoto, Kazuyuki Sakuraya, Kaneaki Tsuzaki

Research output: Contribution to journal › Article

5 Citations (Scopus)

Abstract

In order to improve the machinability of Type 304 austenitic stainless steels, 0.016 mass % boron and 0.2 mass % nitrogen were added, and hexagonal boron nitride (h-BN) particles (1-5 μm diameter) were precipitated. During turning with cemented carbide insert, cutting force and tool wear were reduced by h-BN precipitation, especially at higher cutting speed of more than 40 m/min. The reduction of cutting force seems to be due to the internal lubrication effect of h-BN in chip shear region and deformation flow layer, along with the lubrication between chip and carbide tool. Better disposability of chip and suppression of tool wear were also achieved by h-BN precipitation. Good machinability of h-BN precipitated Type 304 steel was also found in drilling and sawing with high-speed steel tools.

Original language	English
Pages (from-to)	358-367
Number of pages	10
Journal	Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan
Volume	98
Issue number	7
DOIs	https://doi.org/10.2355/tetsutohagane.98.358
Publication status	Published - Aug 20 2012
Externally published	Yes

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Physical and Theoretical Chemistry
Metals and Alloys
Materials Chemistry

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Emura, S., Kawajiri, M., Min, X., Yamamoto, S., Sakuraya, K., & Tsuzaki, K. (2012). Machinability improvement and its mechanism in SUS304 austenitic stainless steel by h-BN addition. Tetsu-To-Hagane/Journal of the Iron and Steel Institute of Japan, 98(7), 358-367. https://doi.org/10.2355/tetsutohagane.98.358

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abstract = "In order to improve the machinability of Type 304 austenitic stainless steels, 0.016 mass % boron and 0.2 mass % nitrogen were added, and hexagonal boron nitride (h-BN) particles (1-5 μm diameter) were precipitated. During turning with cemented carbide insert, cutting force and tool wear were reduced by h-BN precipitation, especially at higher cutting speed of more than 40 m/min. The reduction of cutting force seems to be due to the internal lubrication effect of h-BN in chip shear region and deformation flow layer, along with the lubrication between chip and carbide tool. Better disposability of chip and suppression of tool wear were also achieved by h-BN precipitation. Good machinability of h-BN precipitated Type 304 steel was also found in drilling and sawing with high-speed steel tools.",

author = "Satoshi Emura and Masahiro Kawajiri and Xiaohua Min and Shigeo Yamamoto and Kazuyuki Sakuraya and Kaneaki Tsuzaki",

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AU - Sakuraya, Kazuyuki

AU - Tsuzaki, Kaneaki

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