Open AccessMicrostructural characterisation of microwave cladding on stainless steel
Author(s) -
Syed Tahir Abbas,
D. Y. Shreyas,
. Thejas,
M. Shashank Lingappa,
C. Durgaprasad
Publication year - 2022
Publication title -
journal of mines, metals and fuels
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.125
H-Index - 11
ISSN - 0022-2755
DOI - 10.18311/jmmf/2021/30098
Subject(s) - materials science , microstructure , cladding (metalworking) , microwave , indentation hardness , metallurgy , substrate (aquarium) , composite material , austenite , layer (electronics) , austenitic stainless steel , corrosion , physics , oceanography , quantum mechanics , geology
Partial dilution of clad powder and the substrate to form a new protective layer is called cladding. The present article focuses on the development of a novel surface modification technique for better resistance to wear/erosion using microwaves as a source of heat. Clads of MoCoCrSi/flyash were produced on austenitic stainless steel (SS-316) using microwave irradiation. Composite clads were established by irradiating microwaves at 2.45 GHz frequency and power of 900W using a domestic microwave applicator for 42 minutes. Characterization of the developed clads was performed in the form of metallographic (microstructure) and mechanical (hardness) tests. Careful observation of the microstructures revealed uniform grain structures, free from defects on the surface of the cladded substrate. Further, no significant cracks were found on the transverse section of the clad, characterizing good bonding between clad particles and substrate. The developed clad demonstrates significantly higher hardness than the substrate.