Effect of ultrashort pulse laser parameters on periodic structure and friction properties of cemented carbide cutting tool
Atsushi Ezura, Taisei Shinbo, Hiroki Sasazaki, Naohiko Soma, Koutarou Fujino, Takashi Matsuzawa, Shoichi Tamura
Abstract. Cemented carbide (WC) is the most widely used material for cutting tools because of its high hardness and wear resistance. End mills made of WC are also used in a wide range of industrial fields, such as the aircraft and automobile industries, but longer life is desired for improved productivity and higher quality. Surface modification processes using lasers are attracting attention for improving the friction characteristics and wear resistance of WC. In this study, the effect of applying laser-induced periodic surface structures (LIPSS) to WC on improving its sliding properties was evaluated. FE-SEM observation revealed that femtosecond laser-irradiated plate-shaped WC surfaces formed nanometer scale LIPSS with a period of 360 to 400 nm. Sliding tests using steel balls revealed that LIPSS on the nanometer scale reduced the coefficient of friction and significantly reduced the amount of wear, compared to polished specimens. A femtosecond laser mounted on a five-axis drive machine femtosecond laser mounted on a 5-axis drive machine made it possible to achieve stable LIPSS formation on the flank surface of the end mill. Cutting using the end mill with LIPPS was carried out with lower cutting force compared to the normal end mill. Furthermore, it was found that LIPSS on the flank surface promoted the prevention of Al component, which was main element of the workpiece. The results of this research will lead to longer life for WC end mills, and are very important for the development of the manufacturing industry.
Keywords
Ultra-Short Pulse Laser, LIPSS, Friction Coefficient, Cemented Carbide, End Mill
Published online 5/7/2025, 11 pages
Copyright © 2025 by the author(s)
Published under license by Materials Research Forum LLC., Millersville PA, USA
Citation: Atsushi Ezura, Taisei Shinbo, Hiroki Sasazaki, Naohiko Soma, Koutarou Fujino, Takashi Matsuzawa, Shoichi Tamura, Effect of ultrashort pulse laser parameters on periodic structure and friction properties of cemented carbide cutting tool, Materials Research Proceedings, Vol. 54, pp 1766-1776, 2025
DOI: https://doi.org/10.21741/9781644903599-190
The article was published as article 190 of the book Material Forming
Content from this work may be used under the terms of the Creative Commons Attribution 3.0 license. Any further distribution of this work must maintain attribution to the author(s) and the title of the work, journal citation and DOI.
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