| Autor: |
Dzneladze, Zh. I., Lykova, V. F., Shchegoleva, R. P., Fedoseev, G. K., Fainberg, R. I. |
| Zdroj: |
Powder Metallurgy and Metal Ceramics; January 1975, Vol. 14 Issue: 1 p32-38, 7p |
| Abstrakt: |
1.A process has been developed for the manufacture of sintered alloys of the system Fe-Al, using a 50% Fe-50% Al master alloy.2.Carbonyl iron base Fe-Al alloys possess higher strength and better ductility compared with similar alloys based on pure iron (manufactured by the soda process), which is attributable to their high intergranular strength.3.In the production of Fe-Al alloys, use can be made of pure iron manufactured by the soda process as well as of carbonyl iron. To ensure a sufficiently high level of intergranular strength, it is necessary to employ high compaction pressure (~ 6–8 tons/cm2).4.A study of the room-temperature tensile properties of the alloys showed that with rise in aluminum content from 2 to 12%, their strength steadily increased (st rose from 34.5 to 73.5 kg/mm2 and ss from 26.8 to 65.0 kg/mm2), while their ductility decreased (d fell from 29.3 to 6.0% and? from 82.3 to 10.4%).5.One of the alloys investigated, containing 10% Al, has a low density (?=6.6 g/cm3), high strength (st=68 kg/mm2), and good ductility (d=25%), and may be recommended as starting material for further alloying and dispersion strengthening with refractory oxides. |
| Databáze: |
Supplemental Index |
| Externí odkaz: |
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