Effects of the laser cutting parameters on the micro-hardness and on the heat affected zone of the mi-hardened steel

Boujelbene, M.; Alghamdi, A. S.; Miraoui, I.; Bayraktar, E.; Gazbar, M.

International Journal of Advanced and Applied Sciences

Int. j. adv. appl. sci.

EISSN: 2313-3724

Print ISSN: 2313-626X

Volume 4, Issue 5 (May 2017), Pages: 19-25

Title: Effects of the laser cutting parameters on the micro-hardness and on the heat affected zone of the mi-hardened steel

Author(s): M. Boujelbene ^{1, 2,}*, A. S. Alghamdi ¹, I. Miraoui ³, E. Bayraktar ⁴, M. Gazbar ²

Affiliation(s):

¹College of Engineering, University of Hail, Hail, Saudi Arabia
²ME Laboratory, ENIT, Ecole Nationale d’Ingénieurs de Tunis, University of Tunis El Manar, Tunis, Tunisia
³MEER, Laboratory, College of Sciences, University of Gafsa, Gafsa, Tunisia
⁴SUPMECA/LISMMA-Paris, School of Mechanical and Manufacturing Engineering, Paris, France

https://doi.org/10.21833/ijaas.2017.05.003

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Abstract:

High power CO₂ laser cutting of 6 mm thick C45 steel sheets is investigated with the aim of evaluating the effect of the various laser cutting parameters such as laser power and cutting speed, on the laser cutting quality. In this study, cutting quality was evaluated by measuring the thickness of the Heat Affected Zone (HAZ), the microhardness beneath the cut surface (HV) and the cut section roughness. A simple and practical model was proposed to predict the thickness of the HAZ and the microhardness as a function of two, namely parameters; laser power and cutting speed. The adequacy of the proposed models was tested by analysis of variance (ANOVA). The Experimental data were compared with modelling data to verify the capability of the proposed model. The results indicate that laser power and cutting speed are determinant cutting-parameters on the HAZ thickness and microhardness beneath the cut section.

This is an open access article under the CC BY-NC-ND license (http://creativecommons.org/licenses/by-nc-nd/4.0/).

Keywords: Laser cutting, Cutting speed, Laser power, Heat affected zone, Microhardness

Article History: Received 9 January 2017, Received in revised form 23 March 2017, Accepted 5 April 2017

Digital Object Identifier:

https://doi.org/10.21833/ijaas.2017.05.003

Citation:

Boujelbene M, Alghamdi AS, Miraoui I, Bayraktar E, Gazbar M (2017). Effects of the laser cutting parameters on the micro-hardness and on the heat affected zone of the mi-hardened steel. International Journal of Advanced and Applied Sciences, 4(5): 19-25

http://www.science-gate.com/IJAAS/V4I5/Boujelbene.html

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