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Title: Intermetallic alloy welding wires and method for fabricating the same

Welding wires for welding together intermetallic alloys of nickel aluminides, nickel-iron aluminides, iron aluminides, or titanium aluminides, and preferably including additional alloying constituents are fabricated as two-component, clad structures in which one component contains the primary alloying constituent(s) except for aluminum and the other component contains the aluminum constituent. This two-component approach for fabricating the welding wire overcomes the difficulties associated with mechanically forming welding wires from intermetallic alloys which possess high strength and limited ductilities at elevated temperatures normally employed in conventional metal working processes. The composition of the clad welding wires is readily tailored so that the welding wire composition when melted will form an alloy defined by the weld deposit which substantially corresponds to the composition of the intermetallic alloy being joined.
 [1];  [2]
  1. (Knoxville, TN)
  2. (Oak Ridge, TN)
Issue Date:
OSTI Identifier:
Martin Marietta Energy Systems, Inc. (Oak Ridge, TN) ORNL
Patent Number(s):
US 5525779
Contract Number:
Research Org:
Country of Publication:
United States
intermetallic; alloy; welding; wires; method; fabricating; alloys; nickel; aluminides; nickel-iron; iron; titanium; preferably; including; additional; alloying; constituents; fabricated; two-component; clad; structures; component; contains; primary; constituent; aluminum; approach; wire; overcomes; difficulties; associated; mechanically; forming; possess; strength; limited; ductilities; elevated; temperatures; normally; employed; conventional; metal; processes; composition; readily; tailored; melted; form; defined; weld; deposit; substantially; corresponds; joined; metallic alloys; metallic alloy; intermetallic alloys; nickel-iron aluminides; intermetallic alloy; nickel aluminide; elevated temperatures; elevated temperature; iron aluminide; titanium aluminide; normally employed; component contains; nickel aluminides; welding wires; preferably including; nickel-iron aluminide; mechanically forming; iron aluminides; conventional metal; weld deposit; welding wire; alloy weld; /219/