Abstract
The ability of COMSOL Multiphysics 5.2 software to carry out the simulation of laser drilling processes in Inconel X-750 and Ti-5Al-2.5Sn sheets was investigated in this study. 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 of 2 mm and 3 mm thicknesses using laser pulses of a millisecond in time. The laser parameters are varied in different combinations for well-controlled drilling through the entire thickness of the plates. Effects of laser peak power and pulse duration have been determined via the studying of 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 hole quality is an essential aim in this paper. 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.
Highlights
Inconel X-750 is a high-strength, precipitationhardenable Ni-Cr-Fe superalloy
This study aims to investigate the simulation of laser drilling processes on Inconel X-750 and Ti-5Al-2.5Sn sheets
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
Summary
Due to its oxidation and corrosion resistance and high strength at temperatures up to 704.5 °C, it is used in a wide range of applications such as forming tools, extrusion dies, test machine grips, and nuclear industry [1]. The alloy X-750 [2] has excellent properties down to cryogenic temperatures These alloys are commonly employed in aerospace engineering, rotor blades and wheels of gas turbines as well [3]. Ti-5Al-2.5Sn alloy is characterized by weldability, non-ageability, and high strength; it offers high temperature stability, oxidation, and creep resistance. It is used for the hot spots of the aerospace structural members, as in the case of areas that are close to engines [7]
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