Journal
INTERMETALLICS
Volume 61, Issue -, Pages 21-26Publisher
ELSEVIER SCI LTD
DOI: 10.1016/j.intermet.2015.02.013
Keywords
Intermetallics; In situ; Electron microscopy, scanning; Electron microscopy, transmission; Wear-resistant
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Funding
- Department of Science and Technology, New Delhi
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FeAl based alloys with carbon and titanium additions were prepared using arc induction melting and their effect on wear behaviour was investigated using ball-on-disk technique. The experimental results showed that carbon addition to FeAl alloys results in formation of perovskite-type Fe3AlC0.5 carbide phase and graphite. Addition of Ti promotes the formation of TiC and Fe3AlC0.5 and prevents the formation of graphite in the alloy. Hardness and wear resistance of FeAl based alloys increase with increase in the volume fraction of carbides. The FeAl alloys containing Ti exhibited low wear rate and coefficient of friction. Examination of wear tracks revealed micro ploughing at a lower load of 5N. Thin surface flakes with traces of their detachment were observed at a higher load of 10N. It was also observed that presence of graphite in localized regions reduce the wear resistance of the alloy. The results are correlated with observed microstructure and hardness. (C) 2015 Published by Elsevier Ltd.
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