Structure and properties of Nb-Al alloys prepared by powder metallurgy |
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| Authors: | M. I. Karpov V. P. Korzhov D. V. Prokhorov V. I. Vnukov V. M. Kiiko A. N. Tolstun Yu. R. Kolobov E. V. Golosov |
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| Affiliation: | 1. Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, Moscow oblast, 142432, Russia
2. Belgorod State University, Belgorod, 308015, Russia
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| Abstract: | The structure and short-time strength of Nb-Al alloys of two compositions prepared by powder metallurgy are studied. The mechanical alloying of niobium with aluminum in a planetary ball mill in air is shown to result in simultaneous alloying of niobium with oxygen. During subsequent vacuum high-temperature sintering, disperse particles of a complex oxide, whose tentative composition is (AlNb)2O3, form in the alloy structure. The short-time strength at 1250°C of the prepared alloys exceeds that of nickel-aluminum superalloys. |
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