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Investigation on Surface Morphology and Dimensional Characteristics of Micro-channels Fabricated on Titanium-V Alloy by DPSS Nd:YAG Laser

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Abstract

Micro machining is a most demandable approach for current scenario, as various industries are consequently accustoming themselves with the trends of miniaturization globally. In this context advanced machining strategies are in continuation to vie against the response characteristics of processed materials all along in fabrication of surface features. As a distinctive approach, laser beam micro-machining (LBMM) has proven its dominance over out of those extant machining tactics. In this current endeavor, an attempt has been made to fabricate the micro channels on one of a high strength advanced materials i.e. titanium (grade-V) alloy; which have existent applications in automotive, aerospace, power and process industries, because of their precise parts requirements. This paper holds parametric investigation on dimensional characteristics of micro-channels to study the alterations in channel upper and lower width followed by surface morphology study with the assistance of scanning electron microscope (SEM) in sync with energy dispersive spectroscopy (EDS) to study the surface characteristics and elemental alternations at the zone laser ablation. Experiments were planned in accordance with central composite design (CCDOE) matrix for the selected parameters like scanning strategy (SS), current (I), gas pressure (GP) and scanning speed (v) to perceive their impacts on micro-channel responses. It has been obtained that SS of 45° can reduce the recast layer effectively compared to the SS of 0°. At the later part of this paper an optimal parametric setting was predicted by a statistical multi-objective optimization technique called grey relational analysis (GRA). The optimal setting was found as SS: 0°, I: 16 A, GP: 0.3 kg/cm2 and v: 1.1 mm/s for an overall objective towards the minimization of responses. Later on the optimal results were validated by the confirmation test which was obtained with error levels of 3.8%, 4.13% and 4.83% for UWD, LWD and W-RCL respectively.

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Authors and Affiliations

  1. Department of Production Engineering, Veer Surendra Sai University of Technology, Burla, 768018, India

    Samir Kumar Panda & Debabrata Dhupal

  2. Department of Mechanical Engineering, National Institute of Technology, Rourkela, 769008, India

    Sweta Rout & Debasish Panigrahi

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  1. Samir Kumar Panda
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Correspondence to Debabrata Dhupal.

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Panda, S.K., Rout, S., Panigrahi, D. et al. Investigation on Surface Morphology and Dimensional Characteristics of Micro-channels Fabricated on Titanium-V Alloy by DPSS Nd:YAG Laser. Lasers Manuf. Mater. Process. 8, 443–465 (2021). https://doi.org/10.1007/s40516-021-00156-0

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