Simulation of laser drilling of Inconel X-750 and Ti-5Al-2.5Sn sheets using COMSOL

Authors

  • Muammel M. Hanon MATE University, Szent István Campus, Mechanical Engineering Doctoral School, Páter Károly u. 1, 2100 Gödöllő, Hungary; Middle Technical University (MTU), Baquba Technical Institute, Muasker Al Rashid Street, 10074 Baghdad, Iraq https://orcid.org/0000-0003-4811-5723
  • Ziad A. Taha University of Baghdad, Institute of Laser for Postgraduate Studies, Industrial and Engineering Applications Department, Al-Jadriya, 10071 Baghdad, Iraq
  • László Zsidai MATE University, Szent István Campus, Mechanical Engineering Doctoral School, Páter Károly u. 1, 2100 Gödöllő, Hungary

DOI:

https://doi.org/10.14311/AP.2021.61.0526

Keywords:

laser drilling, modeling using COMSOL, Nd:YAG laser, Nickle alloys, Ti-5Al-2.5Sn alloy

Abstract

This study aims to investigate the simulation of laser drilling processes on Inconel X-750 and Ti-5Al-2.5Sn sheets. To this end, COMSOL Multiphysics 5.2 software was employed to carry out the virtual experiments. A JK 701 pulsed Nd:YAG laser was used for drilling through the entire depth of Inconel X-750 and Ti-5Al-2.5Sn plates with a thickness of 2 mm and 3 mm, using laser pulses of a millisecond in time. The laser parameters varied in different combinations for well-controlled drilling through the entire thickness of the plates. Effects of laser peak power (10-20 kW) and pulse duration (0.5-2.5 ms) have been determined via studying the temperature distribution on the cross-section of the images taken in the simulation tests. Characterizing the optimum conditions obtained from the combination of parameters that improve the hole quality is an essential objective in this paper. The results suggest that the hole's diameter and depth have increased linearly as the laser beam's peak power and pulse duration are elevated. An improvement in the hole's taper ratio (the best value is 0.72) was observed as the laser beam pulse duration was longer, since an isosceles trapezoid shape was formed instead of a conical. The pulse duration exhibited more impact on the crater depth progression than the peak power. This work's outcomes might be helpful for researchers in terms of the optimum parameters proposed when studying the laser drilling of the mentioned alloys experimentally. The procedure and findings of this study are not presented elsewhere.

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Published

2021-08-31

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