Nickel aluminide alloys with improved weldability

Patent · Tue May 09 00:00:00 EDT 1995

OSTI ID:46309

Santella, M L; Goodwin, G M

Weldable nickel aluminide alloys which are essentially free, if not entirely free, of weld hot cracking are provided by employing zirconium concentrations in these alloys of greater than 2.6 wt. % or sufficient to provide a substantial presence of Ni--Zr eutectic phase in the weld so as to prevent weld hot cracking. Weld filler metals formed from these so modified nickel aluminide alloys provide for crack-free welds in previously known nickel aluminide alloys. 5 figs.

• Research Organization: Lockheed Martin Energy Syst Inc
• DOE Contract Number: AC05-84OR21400
• Assignee: Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States)
• Patent Number(s): US 5,413,876/A/
• Application Number: PAN: 7-970,757
• OSTI ID: 46309
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
ALUMINIUM ALLOYS
CHEMICAL COMPOSITION
FILLER METALS
INTERMETALLIC COMPOUNDS
METALLURGICAL EFFECTS
NICKEL ALLOYS
WELDABILITY
ZIRCONIUM
ZIRCONIUM ALLOYS