EXPERIMENTAL STUDIES ON THE SURFACE CHARACTERISTICS OF BIMETALLIC JOINTS INTERFACE FABRICATED THROUGH MICROWAVE IRRADIATION

Sarbjeet Kaushal, Sapna Kumari, Deepa Mudgal, Dheeraj Gupta and Hitesh Vasudev
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Sarbjeet Kaushal: Gulzar Group of Institutions, Ludhiana 141401, Punjab, India
Sapna Kumari: ��Thapar Institute of Engineering and Technology, Patiala 147001, Punjab, India
Deepa Mudgal: ��Thapar Institute of Engineering and Technology, Patiala 147001, Punjab, India
Dheeraj Gupta: ��Thapar Institute of Engineering and Technology, Patiala 147001, Punjab, India
Hitesh Vasudev: ��Lovely Professional University, Jalandhar 144001, Punjab, India

Surface Review and Letters (SRL), 2023, vol. 30, issue 10, 1-14

Abstract: Surface characteristics of dissimilar metal joints interface play a crucial role on its functional performance. In this study, the microstructural, metallurgical and corrosion behavior of the microwave processed and TIG welded bimetallic joints interface surfaces were investigated. Metallurgical and mechanical properties of the joints interface surfaces were studied using SEM/EDS, XRD and microhardness techniques. The hot corrosion behavior study of both joints was carried out at elevated temperature in actual environment of biomass fuel-fired boiler as well as in simulated boiler environment. The after-corrosion behavior of both joints was analyzed using SEM and XRD methods. TIG-welded samples exhibited more loss in weight during both actual and simulated corrosion environments. The depletion of chromium from substrates in the actual corrosion environment proved that chromium is involved in controlling corrosion rates by forming the protective oxides during corrosion cycles.

Keywords: Surface characteristics; microstructure; microwave energy; hot corrosion (search for similar items in EconPapers)
Date: 2023
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DOI: 10.1142/S0218625X23500683

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