Abstract
Fe-15Al, Fe-15Al-5Si, and Fe-15Al-2.8Si powder alloys were produced with high-pressure gas atomization to obtain a high fraction of metal injection molding quality powder. The powders were consolidated by either hot extrusion or vacuum sintering and were heat treated at 600 °C to develop equilibrium structures above the maximum test temperature. Punch tests revealed the yield strength to increase with silicon content. The Fe-15Al-5Si alloys failed by transgranular cleavage below 150 °C before plastic flow was observed. The Fe-15-2.8Si alloy had a room temperature yield strength of 514 MPa and a fracture energy of 400 mJ. The sintered alloys performed well in comparison with the hot extruded samples.
| Original language | English |
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| Pages (from-to) | 13-103 |
| Number of pages | 91 |
| Journal | Advances in Powder Metallurgy and Particulate Materials |
| Volume | 2 |
| State | Published - 1997 |
| Event | Proceedings of the 1997 International Conference on Powder Metallurgy and Particulate Materials. Part 1 (of 3) - Chicago, IL, USA Duration: Jun 29 1997 → Jul 2 1997 |