National Research Nuclear University MEPhI (Moscow Engineering Physics Institute), Moscow, Russia:

O. N. Sevryukov, Assistant Professor
A. N. Suchkov, Assistant Professor, e-mail: ansuchkov221283@mail.ru
E. V. Guseva, Post-Graduate Student

Intermediate and final assembly is one of the most complex manufacturing operations in producing of structural elements. In most cases, this operation is carried out by different welding types. However, increase in the devices, efficiency is the result of their operation in extreme conditions: high temperature, stress, cyclic loading, effects of aggressive environments and, in some cases — radiation exposure. According to this, development and application of advanced materials are required: different types of graphite, ceramics, refractory metals, heat-resistant steels, nickel and titanium alloys. With a set of advantages over welding, brazing was established as a promising method of such materials, joining. At the same time, development of ultra-rapid melt solidification technology offered the great opportunities for application of rapidly quenched amorphous and nanocrystalline filler metals. This paper presents the results of development and production of rapidly quenched ribbon-type filler metals in amorphous and nanocrystalline
state on the basis of Al, Cu, Ni, Fe, Ti, Zr, produced under the grade STEMET^® and designed for brazing of a wide range of alloys, refractory metals, non-metallized ceramics etc. The paper describes the experience in application of these filler metals for materials, brazing in fields of atomic (brazing of spacer grids, anti-debris filters, various adapters and other core elements), thermonuclear (brazing of elements of the ITER first wall and divertor), rocket and space (frame brazing for electronic devices of space satellites, rocket engine nozzles, elements of combustion chambers of plasma engines), automotive (brazing of automotive catalysts, ignition locks, heat exchangers and other equipment), aircraft (brazing of blades and other components of gas turbine engines, heat exchangers) engineering.

This work was carried out within the Centre “Nuclear Systems and Materials” with the state support of the Program of Improvement of the Competitiveness of National Research Nuclear University MEPhI (agreement with the Ministry of Education and Science of the Russian Federation (August 27, 2013; No. 02.а03.21.0005)).

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