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Open AccessArticle

A Study on Work Hardening in the Laser-Assisted Machining of Si3N4 Ceramics under Different Material Removal Modes

Institute for Advanced Manufacturing, Shandong University of technology, Zibo 255049, China
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Metals 2020, 10(4), 432; https://doi.org/10.3390/met10040432 (registering DOI)
Received: 30 January 2020 / Revised: 20 March 2020 / Accepted: 24 March 2020 / Published: 26 March 2020
In order to understand the work hardening phenomenon and mechanism of laser-assisted machining (LAM) of Si3N4 ceramics, the work hardening degree of LAM Si3N4 under different material removal modes was studied. Two sets of single-factor experiments were performed in which the laser power and the cutting depth were changed respectively. The results show that work hardening is the result of the combination of heat and cutting deformation during cutting. The work hardening degree decreases with the increase of material softening degree. When the material is removed plastically, the work hardening degree is 110–115%.
Keywords: laser assisted machining; silicon nitride ceramics; work hardening laser assisted machining; silicon nitride ceramics; work hardening
MDPI and ACS Style

Pu, Y.; Zhao, Y.; Zhao, G.; Meng, J.; Zhang, H.; Liu, Q.; Song, P. A Study on Work Hardening in the Laser-Assisted Machining of Si3N4 Ceramics under Different Material Removal Modes. Metals 2020, 10, 432.

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