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Title: Nickel aluminide alloys with improved weldability

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.
Inventors:
;
Issue Date:
OSTI Identifier:
46309
Assignee:
Martin Marietta Energy Systems, Inc., Oak Ridge, TN (United States) PTO; SCA: 360101; PA: EDB-95:077464; SN: 95001384503
Patent Number(s):
US 5,413,876/A/
Application Number:
PAN: 7-970,757
Contract Number:
AC05-84OR21400
Resource Relation:
Other Information: PBD: 9 May 1995
Research Org:
Lockheed Martin Energy Syst Inc
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; NICKEL ALLOYS; WELDABILITY; ALUMINIUM ALLOYS; ZIRCONIUM ALLOYS; ZIRCONIUM; METALLURGICAL EFFECTS; INTERMETALLIC COMPOUNDS; FILLER METALS; CHEMICAL COMPOSITION

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