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Sintering behaviour of cemented tungsten carbide and steel bilayer


Ojo-Kupoluyi, Oluwatosin Job and Mohd Tahir, Suraya and Hanim, Mohamed Ariff Azmah and Baharudin, B. T. Hang Tuah and Matori, Khamirul Amin and Anuar, Mohd Shamsul (2017) Sintering behaviour of cemented tungsten carbide and steel bilayer. Key Engineering Materials, 740. pp. 60-64. ISSN 1013-9826; ESSN: 1662-9795


The target of processing bimaterial components by cost effective powder metallurgy is to combine unique properties from different parts of the component. Differential shrinkage rate and more often, radial mismatch which is more consistent in bilayer owing to sintering conditions (time, rate, temperature etc.) is known to compromise the interfacial bond strength and integrity of these components. Therefore, the aim of this study is to analyze the sintering compatibility and evaluate the mismatch strain in cemented tungsten carbide (WC-Fe-C) and steel (Fe-W-C) bilayer processed through powder metallurgy (PM) to combine the hardness and toughness properties applicable in machining industries for drilling tools. Through geometrical measurement, mismatch strain rate between layers at different sintering temperatures was calculated and a value as low as 13.7% was observed at the interfacial zone of MC–0.2 specimen sintered at 1280°C indicating a stronger bond between layers compared to those sintered at 1290°C and 1295°C where a huge mismatch was found increasing the tendency for delamination.

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Additional Metadata

Item Type: Article
Divisions: Faculty of Engineering
DOI Number: https://doi.org/10.4028/www.scientific.net/KEM.740.60
Publisher: Trans Tech Publications
Keywords: Bilayer; Carbon content; Mismatch strain; Powder metallurgy
Depositing User: Mohd Hafiz Che Mahasan
Date Deposited: 26 Sep 2018 01:45
Last Modified: 26 Sep 2018 01:45
Altmetrics: http://www.altmetric.com/details.php?domain=psasir.upm.edu.my&doi=10.4028/www.scientific.net/KEM.740.60
URI: http://psasir.upm.edu.my/id/eprint/63229
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