Актуальные проблемы в машиностроении том 4 №4

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Актуальные проблемы в машиностроении. Том 4. № 4. 2017 Материаловедение
в машиностроении
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FABRICATION OF NB-INTERMETALLIC COMPOUND-AL MULTILAYERED
COMPOSITIONS BY EXPLOSIVE WELDING TECHNOLOGY
Alikina M.S., Student, e-mail:
Fomina D.E., Student, e-mail:
Bublikova H.M., Student, e-mail:
Pozdnyakov S.V., Student, e-mail:
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