Abstract
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 language | English |
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| Pages | 755-763 |
| Number of pages | 9 |
| Publication status | Published - 1 Jan 2001 |
| Externally published | Yes |
| Event | 3rd International Symposium on Structural Intermetallics (ISSI 2001) - Jackson Hole, United States of America Duration: 23 Sep 2001 → 27 Sep 2001 |
Conference
| Conference | 3rd International Symposium on Structural Intermetallics (ISSI 2001) |
|---|---|
| Country/Territory | United States of America |
| City | Jackson Hole |
| Period | 23/09/01 → 27/09/01 |