Actual Problems in Machine Building 2017 Vol. 4 No. 4

Актуальные проблемы в машиностроении . Том 4. № 4. 2017 Материаловедение в машиностроении ____________________________________________________________________ 127 Список литературы 1. Гуляев А.П . Металловедение: учебник для вузов. – 5-е изд., перераб. и доп. – М.: Металлургия, 1977. – 647 с. 2. Прохоров Д.В . Структура и механические свойства жаропрочных композиционных материалов на основе системы Nb-Al: дис. … канд. техн. наук: 05.16.01: защищена 12.10.16 / Прохоров Дмитрий Владимирович. – Черноголовка, 2016. – 190 с. 3. Growth and micro structure evolution of the Nb2Al-Al3Nb eutectic in situ composite / C.T. Rios, P.L. Ferrandini, S. Milenkovic, R. Caram // Materials Characterization. – 2000. – Vol. 54. – P. 187–193. 4. Directional solidification, microstructure and properties of the Al3Nb-Nb2Aleutectic / C.T. Rios, S. Milenkovic, P.L. Ferrandini, R. Caram // Journal of Crystal Growth. – 2005. – Vol. 275. – P. 153–158. 5. Rios C.T., Ferrandini P.L., Caram R. Fracture toughness of the eutectic alloy Al3Nb- Nb2Al // Materials Letters. – 2003. – Vol. 57. – P. 3949–3953. 6. Kumagai T., Hanada S. Microstructure of Nb2Al-NbAl3 eutectic alloys produced by unidirectional solidification // Materials Science and Engineering А. – 1992. – Vol. 152, iss. 1–2. – P. 349–355. 7. Захаренко И.Д . Сварка металлов взрывом: учебник для вузов. – Минск: Наука и техника, 1990. – 205 с. 8. Chung D.-S., Enoki M., Kishi T. Microstructural analysis and mechanical properties of in situ Nb/Nb-aluminide layered materials // Science and Technology of Advanced Materials. – 2002. – Vol. 3. – P. 129–135. FABRICATION OF NB-INTERMETALLIC COMPOUND-AL MULTILAYERED COMPOSITIONS BY EXPLOSIVE WELDING TECHNOLOGY Alikina M.S., Student, e-mail: am.unimail@mail.ru Fomina D.E., Student, e-mail: gaga.95@mail.ru Bublikova H.M., Student, e-mail: khris95@mail.ru Pozdnyakov S.V., Student, e-mail: s.t.a.s.13.3@mail.ru Novosibirsk State Technical University, 20 Prospect K. Marksa, Novosibirsk, 630073, Russian Federation Abstract Current research presents the results of microstructural studies and mechanical properties of multilayered materials consisting of niobium and aluminum foils. Compositions were produced by explosive welding. Because of high-speed of explosive welding technology the homogenization has no time to be completed, which results in the additional heat treatment for activation of diffusion processes and growth of intermetallic layer at the interface between materials. Thus, in research post annealing of explosively welded compositions was carried out in the temperature range of 620- 850 °C. It was found that intensive growth of intermetallic layers begins with 750 °С and higher. Results of microhardness measurements haves shown that hardness of formed intermetallic layers was 450-530 HV. These values were in several times greater than that of initial materials. Keywords niobium, aluminum, explosive welding, intermetallic layer, annealing