The Paton Welding Journal, 2009, №08



2009 №08 (07)

2009 №08 (09)

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TPWJ, 2009, #8, 36-42 pages  
PECULIARITIES OF STRUCTURE OF METAL DEPOSITED ON EDGES OF SINGLE-CRYSTAL BLADES MADE FROM NICKEL SUPERALLOYS


Journal                    The Paton Welding Journal
Publisher                 International Association «Welding»
ISSN                       0957-798X (print)
Issue                       № 8, 2009 (August)
Pages                      36-42
 
 
Authors
K.A. YUSHCHENKO¹, B.A. ZADERY¹, A.V. ZVYAGINTSEVA¹, V.S. SAVCHENKO¹, I.S. GAKH¹ and O.P. KARASEVSKAYA^2
1E.O. Paton Electric Welding Institute, NASU, Kiev, Ukraine
²G.V. Kurdyumov Institute for Metal Physics, NASU, Kiev, Ukraine
 
 
Abstract
Peculiarities of crystallography and structure of metal deposited on free edges of single-crystal blades made from heat-resistant alloy JS-26 are considered. Their dependence upon the crystallographic orientation of the initial metal has been established. It is shown that, in general, inheritance of the crystallographic orientation and changes in the structural state of the initial metal by the deposited metal in cladding obeys the same qualitative mechanisms as in welding.
 
 
Keywords: electron beam cladding, filler metal, single crystals, heat-resistant nickel superalloys, crystallographic orientation, shape of solidification front, thermal gradient, direction of preferred solidification, dislocation density
 
 
Received:                03.02.09
Published:               28.08.09
 
 
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