Development of high carbon Fe-Al alloys for tribological applications

S. M. Zhu, M. Tamura, X. S. Guan, K. Sakamoto, T. Horiya, K. Iwasaki

Research output: Contribution to conferencePaper

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Vacuum arc melting and vacuum induction melting techniques were used to produce alloys of Fe-15 wt.% Al (Fe 3 Al-based) and Fe-25 wt.% Al (FeAl-based) with various carbon contents (0, 0.5, 1 and 2 wt.%). Hot working of the alloys was achieved via isothermal forging or hot extrusion. Carbon addition into Fe-15Al alloy led to a duplex microstructure containing Fe 3 AlC 0.5 and Fe 3 Al, while formation of graphite was observed in the carbon-added Fe-25Al alloys. With increasing carbon content, the hardness increased significantly in Fe-15Al alloys but exhibited a slight decrease in Fe-25Al alloys. The ductility was evaluated using bending tests and was correlated with the fracture mode. Ball-on-disk sliding wear tests revealed that the coefficient of friction and wear rate were greatly reduced with carbon addition for both the Fe-15Al and the Fe-25Al alloys. The braking wear performance of carbon-added alloys was evaluated with an industry-approved dynamometer by using commercial brake pads, and was compared with that of cast iron, a currently used material for automobile brake rotors.

Original languageEnglish
Number of pages9
Publication statusPublished - 1 Jan 2001
Externally publishedYes
Event3rd International Symposium on Structural Intermetallics (ISSI 2001) - Jackson Hole, United States of America
Duration: 23 Sept 200127 Sept 2001


Conference3rd International Symposium on Structural Intermetallics (ISSI 2001)
Country/TerritoryUnited States of America
CityJackson Hole

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