The Paton Welding Journal, 2010, №11



2010 №11 (11)

2010 №11 (02)

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TPWJ, 2010, #11, 2-7 pages
 
EFFECT OF NANOFOIL OF THE Ni-NbC SYSTEM ON STRUCTURE OF ELECTRON BEAM WELDS IN HEAT-RESISTANT ALLOYS


Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 11, 2010 (November)
Pages                      2-7
 
 
Authors
K.A. YUSHCHENKO, A.I. USTINOV, B.A. ZADERY, V.S. SAVCHENKO, T.V. MELNICHENKO, V.V. KURENKOVA, A.V. ZVYAGINTSEVA and I.S. GAKH
E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
 
 
Abstract
The effect of niobium carbide nanoparticles on structure and properties of electron beam welds in nickel alloys was studied. Alloying of the weld metal with niobium carbide nanoparticles was performed by adding composite nanostructured foil of the Ni-NbC system into the weld pool. The foil was produced by electron beam evaporation of the components in vacuum, followed by combined deposition of their vapour flows on the substrate. Adding the niobium carbide nanoparticles into the weld pool was shown to lead to formation of crystalline grains with a cellular structure within the weld zone, with the NbC particles located along the boundaries of the above grains. The effect of this structure of the welds on their mechanical properties was analysed.
 
 
Keywords: electron beam welding, electron beam evaporation, nickel alloy, weld, foil, alloying, modification, niobium monocarbide, nanoparticles, intragranular substructure
 
 
Received:                ??.??.??
Published:               28.11.10
 
 
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