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Wear behaviour of TiC coated AISI 4340 steel produced by TIG surface melting

Maleque, Md. Abdul and Ghazal, Belal Ahmed and Ali, Mohammad Yeakub and Hayyan, Maan and Ahmed, Abu Saleh (2015) Wear behaviour of TiC coated AISI 4340 steel produced by TIG surface melting. In: International Conference on Functional Materials and Metallurgy, ICoFM 2014, 17-18 Sep 2014, Pulau Pinang.

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Abstract

Coating possesses superior wear resistance which makes the material suitable for components subjected to dynamic applications under sever wearing condition and high temperature applications. In this study, TiC coating layer was synthesized by preplacing a 1 mg/mm2 of fine size (~40 μm) TiC powder on the surface of AISI 4340 steel. The composite layer was produced by rapidly melting TiC powder together with the substrate steel using tungsten inert gas (TIG) torch welding at a fixed heat input of 1344 J/mm. The wear behaviour of the coated steel was investigated using a universal pin-on-disc tribometer. The microhardness profile of the coating showed increment of the hardness value (almost 5 times higher) than the substrate material. The wear test results showed that the TiC coated steel has lower wear volume loss hence, higher wear resistance compared to the substrate AISI 4340 steel. Incorporation of TiC into the steel surface has improved the wear behaviour of the steel by reduction of plastic deformation and ploughing of the steel surface. The SEM micrograph of the wear worn surface showed mild type of abrasive wear for coated steel whereas, the AISI 4340 steel showed severe type wear with excessive plastic deformation and ploughing.

Item Type: Conference or Workshop Item (UNSPECIFIED)
Additional Information: 6103/42872 Published in Materials Science Forum Volume 819, 2015, Pages 76-80 ISSN: 0255-5476 ISBN: 978-303835473-4
Uncontrolled Keywords: wear, hardness, tungsten inert gas torch; titanium carbide.
Subjects: T Technology > T Technology (General) > T173.2 Technological change
T Technology > TA Engineering (General). Civil engineering (General) > TA401 Materials of engineering and construction
T Technology > TN Mining engineering. Metallurgy > TN600 Metallurgy
Kulliyyahs/Centres/Divisions/Institutes: Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User: Prof Dr. M A Maleque
Date Deposited: 18 May 2015 16:11
Last Modified: 08 Nov 2017 10:36
URI: http://irep.iium.edu.my/id/eprint/42872

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