Experimental Study on Liquid-assisted Nanosecond Laser Processing of Inconel 718 Micropores

Xuri Li; Shufeng Sun; Pingping Wang; Fengyun Zhang; Jin Wang; Tao Wei; Gongliang Chen; Junbao Li; Yong Zhu

doi:10.62051/ijmee.v5n2.06

Authors

Xuri Li
Shufeng Sun
Pingping Wang
Fengyun Zhang
Jin Wang
Tao Wei
Gongliang Chen
Junbao Li
Yong Zhu

DOI:

https://doi.org/10.62051/ijmee.v5n2.06

Keywords:

Nanosecond Laser, Chemical Liquid, Inconel 718, Plasma, Superalloy

Abstract

In this paper, the experiment of IN718 superalloy was carried out with the aid of liquid, and the influence of liquid aid on key indexes such as hole taper and diameter of inlet and outlet was systematically analyzed. At the same time, the chemical element composition of the hole wall was detected, and the thickness of oxide layer formed in different environments during machining was studied. Finally, the processing mechanism of IN718 superalloy nanosecond laser drilling under liquid-assisted conditions is discussed. The results show that both water-assisted and liquid-assisted can improve the quality of micropores in different degrees compared with the condition without auxiliary field in air, especially the effect of liquid-assisted is the most significant. Under this condition, the hole taper is reduced by 67%. In addition, with the help of liquid, the content of oxygen element in the pore wall of micropores is greatly reduced, and the element composition is closer to the base material. This study provides important theoretical support and technical optimization direction for nanosecond laser drilling technology.

References

[1] ZHANG N, WANG M S, BAN M X, et al. Femtosecond laser drilling 100 μm diameter micro holes with aspect ratios > 20 in a Nickel based superalloy [J]. Journal of Materials Research and Technology-Jmr&T, 2024, 28: 1415-22.

[2] BIERMANN D, KAHLEYSS F, KREBS E, et al. A Study on Micro-Machining Technology for the Machining of NiTi: Five-Axis Micro-Milling and Micro Deep-Hole Drilling [J]. Journal of Materials Engineering and Performance, 2011, 20(4-5): 745-51.

[3] LI Z K, TANG J J, BAI J C. A novel micro-EDM method to improve microhole machining performances using ultrasonic circular vibration (UCV) electrode [J]. International Journal of Mechanical Sciences, 2020, 175.

[4] DAS A K, SAHA P. Machining of circular micro holes by electrochemical micro-machining process [J]. Advances in Manufacturing, 2013, 1(4): 314-9.

[5] ZHANG Z F, WANG W H, JIANG R S, et al. Investigation on geometric precision and surface quality of microholes machined by ultrafast laser [J]. Optics and Laser Technology, 2020, 121.

[6] Marimuthu S, Dunleavey J, Liu Y, et al. Water-jet guided laser drilling of SiC reinforced aluminium metal matrix composites[J]. Journal of Composite Materials, 2019, 53(26-27): 3787-3796.

[7] Li Z, Duan L, Zhao R, et al. Experimental investigation and optimization of modification during coaxial waterjet-assisted femtosecond laser drilling[J]. Optics & Laser Technology, 2024, 177: 111072.

[8] Ren N, Xia K, Yang H, et al. Water-assisted femtosecond laser drilling of alumina ceramics[J]. Ceramics International, 2021, 47(8): 11465-11473.

[9] Krstulović N, Shannon S, Stefanuik R, et al. Underwater-laser drilling of aluminum[J]. The International Journal of Advanced Manufacturing Technology, 2013, 69: 1765-1773.

[10] Laakso M J O, Pagliano S, Shah U, et al. Water in contact with the backside of a silicon substrate enables drilling of high-quality holes through the substrate using ultrashort laser pulses[J]. Optics Express, 2020, 28(2): 1394-1407.

[11] Mendiratta M, Prakash S. Improved quality micro-hole fabrication using backside water assisted laser micro-drilling in titanium[J]. Engineering Research Express, 2025, 7(1): 015402.

[12] Zhang X S, Zhang Z Y, Zhu H, et al. Mass Fabrication of Microholes in Aviation Kerosene Filters Using the Back-water-assisted Picosecond Laser Drilling Technique[J]. Lasers in Engineering (Old City Publishing), 2022, 52.

[13] Wang X, Han B, Ehrhardt M, et al. Optimizing Hole Shape and Improving Surface Quality of Inconel 718 Alloy by High-Temperature Chemical Assisted Laser Processing[J]. Metals and Materials International, 2023, 29(7): 1991-2003.

[14] Li L, Achara C. Chemical assisted laser machining for the minimisation of recast and heat affected zone[J]. CIRP annals, 2004, 53(1): 175-178.