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Effect of Hardfacing on Mechanical Properties
Abstract
A metal working process in which a harder alloying elements are deposited to a softer material the process is called hardfacing or hard surfacing. The life of that part which is hardfaced increases with this process. The present investigation discusses the effects of FeCr, FeV, FeMo, FeMn, C and Ni addition applied on mild steel having carbon content 0.27 using the submerged arc welding process.
The effect of these alloying elements on the microstructure and wear properties were investigated using optical microscope, scanning microscope. The X-ray diffraction and tensile stress were also investigated. By increasing the amount FeCr and C content the M7C3 type of carbide formed. Findings show that FeCr, C, and FeMo addition obviously affects the hardness of primary carbides. FeV addition to alloy can slightly increase the hardness of primary carbides. The hardness becomes four time the base metal. The wear resistance also increases by three times. The tensile stress increase from 380 MPa to 497 MPa. The XRD peaks shows the presence of iron carbide, austenite and chromium carbide.
Keywords
References
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DOI: https://doi.org/10.37591/joeam.v13i3.6956
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