2017 №02 (03) DOI of Article
2017 №02 (05)

Electrometallurgy Today 2017 #02
Electrometallurgy today, 2017, #2, 21-28 pages

Producing of high-strength thermo-sensitive bimetal invar/copper foils by the method of electron beam deposition

A.I. Ustinov, S.A. Demchenkov, E.V. Fesyun
E.O. Paton Electric Welding Institute, NASU. 11 Kazimir Malevich Str., 03680, Kiev, Ukraine. E-mail: office@paton.kiev.ua

Thermosensitive bimetal foils, consisting of layers of materials with different coefficients of thermal expansion, are manufactured by rolling of these materials and their joining. The thermal sensitivity of foils is determined by materials, which are included in its composition and its total thickness. The traditional approach to the manufacture of bimetal foil implies limitations for its producing of a small thickness with a higher thermal sensitivity. The increase in strength of these foils is important from the point of view of a practical application. The work considers the possibility of manufacture of bimetal foils on the base on invar alloy Fe–Ni–Co and copper by electron beam deposition in vacuum per one technological cycle. To increase the strength of materials, included into bimetal foil composition, their deposition was performed at the condition of producing the layer of invar alloy Fe-Ni-Co in a nanostructured state and a copper layer with a nanotwinned substructure. It is shown that by varying the time of deposition of materials it is possible to produce the high-strength nanostructured bimetal foils of thickness from 20 up to 100 μm. Ref. 11, Table 1, Figures 8.

Keywords: electron beam deposition; vacuum condensates; bimetals; nanostructured materials; copper; invaralloy


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