Experimental evaluation of additively deposited functionally graded material samples-microscopic and spectroscopic analysis of SS-316L/Co-Cr-Mo alloy

Yakkaluri Pratapa Reddy; Kavuluru Lakshmi Narayana; Mantrala Kedar Mallik; Christ Prakash Paul; Ch. Prem Singh; Yakkaluri Pratapa Reddy; Kavuluru Lakshmi Narayana; Mantrala Kedar Mallik; Christ Prakash Paul; Ch. Prem Singh

doi:10.3934/matersci.2022040

AIMS Materials Science

2022, Volume 9, Issue 4: 653-667. doi: 10.3934/matersci.2022040

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Experimental evaluation of additively deposited functionally graded material samples-microscopic and spectroscopic analysis of SS-316L/Co-Cr-Mo alloy

1.
Department of Mechanical Engineering, Koneru Lakshmaiah Education Foundation (KLEF), Green Fields, Vaddeswaram, Guntur Dt-522 302, Andhra Pradesh, India
2.
Department of Mechanical Engineering, Vasireddy Venkatadri Institute of Technology (VVIT), Namburu, Guntur Dt-522 508, Andhra Pradesh, India
3.
Laser Development and Industrial Applications Division, Raja Ramanna Center for Advanced Technology (RRCAT), Indore-452 013, Madhya Pradesh, India

Received: 08 March 2022 Revised: 13 June 2022 Accepted: 29 June 2022 Published: 18 August 2022

The gradual and uniform variation in the composition of the material, generally two, is called functionally graded materials (FGM). These FGM are used in practical applications to advantage both material properties. Several methods are used to fabricate the FGM components. The current article is research on the direct energy dispersive technique of 3D Printing employed for depositing the SS316L and Co-Cr-Mo alloy FGM samples. L9 orthogonal array of Taguchi method is used. Process parameters like laser power, powder feed rate and scan speed have been used for deposition. Their structural properties are analysed using scanning electron microscopy, X-ray diffraction, element dispersive technique, and Fourier transform impedance spectroscopy. The results reveal that defect-free samples were deposited, and all the samples have Body Centered Cubic structure except one. Good elemental bonding was observed between SS316L and Co-Cr-Mo alloy.
- scanning electron microscopy,
- X-ray diffraction,
- fourier transform impedance spectroscopy,
- functionally graded material,
- laser engineered net shaping
Citation: Yakkaluri Pratapa Reddy, Kavuluru Lakshmi Narayana, Mantrala Kedar Mallik, Christ Prakash Paul, Ch. Prem Singh. Experimental evaluation of additively deposited functionally graded material samples-microscopic and spectroscopic analysis of SS-316L/Co-Cr-Mo alloy[J]. AIMS Materials Science, 2022, 9(4): 653-667. doi: 10.3934/matersci.2022040

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Abstract

The gradual and uniform variation in the composition of the material, generally two, is called functionally graded materials (FGM). These FGM are used in practical applications to advantage both material properties. Several methods are used to fabricate the FGM components. The current article is research on the direct energy dispersive technique of 3D Printing employed for depositing the SS316L and Co-Cr-Mo alloy FGM samples. L9 orthogonal array of Taguchi method is used. Process parameters like laser power, powder feed rate and scan speed have been used for deposition. Their structural properties are analysed using scanning electron microscopy, X-ray diffraction, element dispersive technique, and Fourier transform impedance spectroscopy. The results reveal that defect-free samples were deposited, and all the samples have Body Centered Cubic structure except one. Good elemental bonding was observed between SS316L and Co-Cr-Mo alloy.

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