Abstract
Alloy powder of the Ti–47Al–2Nb–2Cr composition (at %) with a structure of TiAl (60 wt %) and Ti3Al (40 wt %) is prepared by the calcium-hydride method. The mode of calcium-hydride synthesis is optimized for the Ti–50Al (at %) model alloy. It is established that the reduction temperature should be no lower than 1100°C, while the excess of the CaH2 reducing agent should be no lower than 15 wt %. The main physicochemical and manufacturing properties of the synthesized Ti–47Al–2Nb–2Cr powder alloy, which provide the formation of dense compact items during its subsequent consolidation processes, are determined using modern analytical methods.
Similar content being viewed by others
References
Povarova, K.B., Physicochemical principles of creation thermally stable alloys based on transition metal aluminides, Materialovedenie, 2007, no. 12, pp. 20–27.
Pol’kin, I.S., Grebenyuk, O.N., and Salenkov, V.S., Titanium-based intermetallic compounds, Tekhnol. Legk. Splavov, 2010, no. 2, pp. 5–15.
Robinson, L. and Scott, J., Layers of complexity: making the promises possible for additive manufacturing of metals, JOM, vol. 66, no. 11, pp. 2194–2207.
Gu, D.D., Meiners, W., Wissenbach, K., and Poprawe, R., Laser additive manufacturing of metallic components: materials, processes and mechanisms, Inter. Mater. Rev., 2012, vol. 57, no. 3, pp. 133–164.
Beresnev, A.G., Logunov, A.V., Logacheva, A.I., Bogdanova, T.G., and Logachev, A.V., Heat-resistant alloys prepared by the method of metallurgy of granules, Aviakosmich. Tekhn. Tekhnol., 2008, no. 2, pp. 35–40.
Logunov, A.V., Beresnev, A.G., and Logacheva, A.I., Problems and prospects of applying the metallurgy of granules for the space-rocket hardware, Dvigatel’, 2008, no. 2, pp. 8–10.
Kasimtsev, A.V. and Levinskii, Yu.V., Gidridnokal’tsievye poroshki metallov, intermetallidov, tugoplavkikh soedinenii i kompozitsionnykh materialov (Calcium Hydride Powders of Metals, Intermetallic Compoounds, and Composite Materials), Moscow: Mosk. Inst. Tonk. Khim. Tekhnol., 2012.
Kasimtsev, A.V., Yudin, S.N., Markova, G.V., Sviridova, T.A., and Shuitsev, A.V., Physicochemical and manufacturing characteristics of the Nb3Al intermetallic compound prepared by calcium-hydride method, Izv. TulGU. Tekhnich. Nauki, 2014, no. 3, part 2, pp. 139–150.
Kasimtsev, A.V., Tabachkova, N.Yu., Voldman, G.M., and Yudin, S.N., Metal-thermal synthesis and properties of ultraand nanopowders of titanium carbide, Tsvetnye Metally (Non-Ferrous Metals), 2014, no. 7, pp. 54–58.
Kasimtsev, A.V., Yudin, S.N., Logacheva, A.I., and Sviridova, T.A., Properties of the Nb3Al intermetallic compound prepared by calcium-hydride method, Neorg. Mater., 2015, vol. 1, no. 1, pp. 49–56.
Kasimtsev, A.V. and Sviridova, T.A., Features of the crystal structure of intermetallic compounds prepared by calcium-hydride method, Metally, 2012, no. 3, pp. 93–104.
Dzneladze, Zh.I., Shchegoleva, R.P., Golubeva, L.S., et al., Poroshkova metallurgiya stalei i splavov (Powder Metallurgy of Steels and Alloys), Moscow: Metallurgiya, 1978.
Veryatin, U.D., Mashirev, V.P., Ryabtsev, N.G., et al., Termodinamicheskie svoistva neorganicheskikh veshchestv: Spravochnik (Thermodynamic Properties of Inorganic Substances: Handbook), Zefirov, A.P., Ed., Moscow: Atomizdat, 1965.
Kubaschewski, O. and Alcock, C.B., Metallurgical Thermochemistry, Oxford–New York: Pergamon, 1979, 5th ed.
Diagrammy sostoyaniya dvoinykh metallicheskikh sistem: Spravochnik: v 3 tomakh. Tom 1 (Phase Diagrams of Binary Metallic Systems: Handbook: in 3 volumes) Lyakishev, N.P., Eds., Moscow: Mashinostroenie, 1996, vol. 1.
Author information
Authors and Affiliations
Corresponding author
Additional information
Original Russian Text © A.V. Kasimtsev, S.N. Yudin, T.A. Sviridova, A.V. Malyarov, A.A. Zaitsev, Zh.A. Sentyurina, Yu.Yu. Kaplanskii, Yu.S. Pogozhev, E.A. Levashov, 2015, published in Izvestiya VUZ. Tsvetnaya Metallurgiya, 2015, No. 4, pp. 63–68.
About this article
Cite this article
Kasimtsev, A.V., Yudin, S.N., Sviridova, T.A. et al. Production of a sintered alloy based on the TiAl intermetallic compound. Part 1: Calcium-hydride fabrication technology of the Ti–47Al–2Nb–2Cr powder alloy and its properties. Russ. J. Non-ferrous Metals 56, 548–554 (2015). https://doi.org/10.3103/S1067821215050065
Published:
Issue Date:
DOI: https://doi.org/10.3103/S1067821215050065