Investigations on morphology and material removal rate of various MMCs using CO 2 laser technique
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(2020) 42:542
TECHNICAL PAPER
Investigations on morphology and material removal rate of various MMCs using C O2 laser technique Vikas Sharma1 · Vinod Kumar2 · Ashish Bist3 Received: 16 August 2019 / Accepted: 15 September 2020 © The Brazilian Society of Mechanical Sciences and Engineering 2020
Abstract The efficient machining of metal matrix composite becomes important factor with respect to the high strength and hardness properties. The presented research work observes the influence of C O2 laser processing parameters on various metal matrix composite materials in terms of material removal rate (MRR). A comparison has been explored between various composite materials such as silicon carbide (SiC), aluminum oxide ( Al2O3), and zirconium oxide ( ZrO2) metal matrix composites for MRR. This results in novel research in context of MRR that examines the microstructure of machined work material. In the present study, to determine MRR various weighing evaluations and topography of machined surface were studied. The results indicated that the focal position, cutting speed and reinforced particles are the significant parameters for MRR. The morphological and metallurgical changes such as formation of recast layer have been analyzed using scanning electron microscope. The chemical composition of machined work materials and formation of new compound have been identified using EDS/XRD technique. Keywords Material removal rate · Morphological · CO2 laser · Weighing evaluations Abbreviations SiC Silicon carbide Al2O3 Aluminum oxide ZrO2 Zirconium oxide MMCs Metal matrix composites MRR Material removal rate
1 Introduction The Industrial Revolution focused more on the productivity and quality of the product with low input cost. In this context, some of the new materials are invented having high mechanical properties with low weight. These materials are Technical Editor: Lincoln Cardoso Brandao. * Vikas Sharma [email protected] 1
Department of Mechanical Engineering, The NorthCap University, Gurugram, Haryana, India
2
Department of Mechanical Engineering, Thapar University, Patiala, Punjab, India
3
Department of Mechanical Engineering, Graphic Era University, Dehradun, UK, India
referred as composite or advanced material. The machining of these types of materials becomes important to consider due to variable thermal properties of different materials. The various non-traditional methods of machining are not able to produce the better-quality characteristics. For efficient machining, the laser machining process is considered as one of the most widely used methods due to its special physical properties such as non-contact type, high speed, and complex profile cutting. However, optimum parameters for any machining process decide the productivity and efficiency. The laser beam machining becomes more important to study when applied on composite material due to variable thermal properties of reinforced particles and base material. Various authors have performed the work to analyze the machinability
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