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2021 | OriginalPaper | Chapter

A Comparative Study on the Effect of Graphene and Multi-walled Carbon Nanotubes Used as Interlayers on Resistance Spot Welded Joints of a Carbon Steel

Author : Tanmoy Das

Published in: Metal-Matrix Composites

Publisher: Springer International Publishing

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Abstract

The application of graphene nanoplatelets (GNPs) and multi-walled carbon nanotubes (MWCNTs) as a thin interlayer between the faying surfaces of carbon steel (AISI-1008) joints and its effect on the microstructure and mechanical properties of the welded joints has been reported here. The resistance spot welding (RSW) technique has been utilised to entrap the nanoparticles in the weld nugget. Single lap shear tests were performed to get an insight into the weld strength of the bare, graphene nanoplatelets, and multi-walled carbon nanotubes interlayered samples, and ~49% and ~45% enhancements, respectively, were reported. Fracture surface morphology depicted that a combination of both brittle and ductile fractures was the major causes of failure. A detailed microstructural study was performed using light microscopy, scanning electron microscopy, transmission electron microscopy, X-ray diffraction, and Raman spectroscopy for both cases. The increase in the weld strength and hardness of the nanocomposite formed at the weld nugget was attributed to grain refinement and numerous strengthening mechanisms.

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Metadata
Title
A Comparative Study on the Effect of Graphene and Multi-walled Carbon Nanotubes Used as Interlayers on Resistance Spot Welded Joints of a Carbon Steel
Author
Tanmoy Das
Copyright Year
2021
DOI
https://doi.org/10.1007/978-3-030-65249-4_10

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