Abstract: The present concept is a method of cladding and fusion welding of superalloys and includes the steps of firstly application of a composite filler powder that comprises 5-50% by weight brazing powder which includes melting point depressants, and 50-95% by weight high temperature welding powder, to a superalloy base material. Secondly there is simultaneous melting of the base material and the composite filler powder by a welding heat source that is movable relative to the base material. There is heating to a temperature that will fully melt the brazing and high temperature welding powder and also melt a surface layer of the base material, thereby forming a weld pool followed by heat treatment with a partial re-melt of interdendritic B based eutectics.
Type:
Application
Filed:
May 15, 2018
Publication date:
September 13, 2018
Applicant:
Liburdu Engineering Limited
Inventors:
Alexander B. GONCHAROV, Joseph Liburdi, Paul Lowden, Scott Hastie