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Title: Alloy powder mixture for brazing of superalloy articles

Abstract

An improved braze material is described for brazing at least one superalloy substrate comprising: a high melt component having at least one metallic powder consisting essentially of, by weight, about 4 to 18.5 percent cobalt, about 4.5 to 14 percent chromium, about 3 to 6.2 percent aluminum, 0 to about 5 percent titanium, 0 to about to 4 percent molybdenum, about 3.8 to 13.7 percent tantalum, about 4 to 11 percent tungsten, 0 to about 0.5 percent niobium, 0 to about 12 percent rhenium, 0 to about 1.55 percent hafnium, 0 to about 0.3 percent yttrium, boron and silicon only as impurities, with the balance being nickel and other incidental impurities; and a low melt component having at least one metallic powder consisting essentially of, by weight, about 3.9 to 25 percent cobalt, about 4.6 to 22 percent chromium, 0 to about 12.2 percent aluminum, 0 to about 11.5 percent titanium, 0 to about 2 percent molybdenum, 0 to about 5.4 percent tantalum, 0 to about 7 percent tungsten, 0 to about 3 percent niobium, 0 to about 1.5 percent rhenium, 0 to about 1.1 percent hafnium, 0 to about 10 percent silicon, 0 to about 2.3 percent boron, whereinmore » the total amount of silicon plus boron is at least 0.5 percent, with the balance being nickel and incidental impurities; wherein the high melt component and the low melt component together comprise a bulk composition range consisting essentially of, by weight, about 3 to 13.5 percent cobalt, about 2.8 to 15 percent chromium, about 3 to 7.5 percent aluminum, 0 to about 5 percent titanium, 0 to about 2.5 percent molybdenum, about 2.5 to 6.9 percent tantalum, about 3 to 8 percent tungsten, 0 to about 1.5 percent niobium, 0 to about 6 percent rhenium, 0 to about 1.5 percent hafnium, 0 to about 2.2 percent silicon, 0 to about 1 percent boron, with the balance being nickel and impurities; wherein the bulk composition range comprises less than about 2.2 total weight percent of elements selected from boron and silicon.« less

Inventors:
; ;
Publication Date:
OSTI Identifier:
6101625
Patent Number(s):
US 5240491; A
Application Number:
PPN: US 7-726495
Assignee:
General Electric Co., Cincinnati, OH (United States)
Resource Type:
Patent
Resource Relation:
Patent File Date: 8 Jul 1991
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; BRAZING ALLOYS; HEAT RESISTING ALLOYS; BRAZING; ALUMINIUM ALLOYS; CHEMICAL COMPOSITION; CHROMIUM ALLOYS; COBALT ALLOYS; HAFNIUM ALLOYS; IMPURITIES; MIXTURES; MOLYBDENUM ALLOYS; NIOBIUM ADDITIONS; POWDERS; RHENIUM ALLOYS; TANTALUM ALLOYS; TITANIUM ALLOYS; TUNGSTEN ALLOYS; YTTRIUM ADDITIONS; ALLOYS; DISPERSIONS; FABRICATION; HEAT RESISTANT MATERIALS; JOINING; MATERIALS; NIOBIUM ALLOYS; WELDING; YTTRIUM ALLOYS; 360101* - Metals & Alloys- Preparation & Fabrication

Citation Formats

Budinger, D E, Ferrigno, S J, and Murphy, W H. Alloy powder mixture for brazing of superalloy articles. United States: N. p., 1993. Web.
Budinger, D E, Ferrigno, S J, & Murphy, W H. Alloy powder mixture for brazing of superalloy articles. United States.
Budinger, D E, Ferrigno, S J, and Murphy, W H. Tue . "Alloy powder mixture for brazing of superalloy articles". United States.
@article{osti_6101625,
title = {Alloy powder mixture for brazing of superalloy articles},
author = {Budinger, D E and Ferrigno, S J and Murphy, W H},
abstractNote = {An improved braze material is described for brazing at least one superalloy substrate comprising: a high melt component having at least one metallic powder consisting essentially of, by weight, about 4 to 18.5 percent cobalt, about 4.5 to 14 percent chromium, about 3 to 6.2 percent aluminum, 0 to about 5 percent titanium, 0 to about to 4 percent molybdenum, about 3.8 to 13.7 percent tantalum, about 4 to 11 percent tungsten, 0 to about 0.5 percent niobium, 0 to about 12 percent rhenium, 0 to about 1.55 percent hafnium, 0 to about 0.3 percent yttrium, boron and silicon only as impurities, with the balance being nickel and other incidental impurities; and a low melt component having at least one metallic powder consisting essentially of, by weight, about 3.9 to 25 percent cobalt, about 4.6 to 22 percent chromium, 0 to about 12.2 percent aluminum, 0 to about 11.5 percent titanium, 0 to about 2 percent molybdenum, 0 to about 5.4 percent tantalum, 0 to about 7 percent tungsten, 0 to about 3 percent niobium, 0 to about 1.5 percent rhenium, 0 to about 1.1 percent hafnium, 0 to about 10 percent silicon, 0 to about 2.3 percent boron, wherein the total amount of silicon plus boron is at least 0.5 percent, with the balance being nickel and incidental impurities; wherein the high melt component and the low melt component together comprise a bulk composition range consisting essentially of, by weight, about 3 to 13.5 percent cobalt, about 2.8 to 15 percent chromium, about 3 to 7.5 percent aluminum, 0 to about 5 percent titanium, 0 to about 2.5 percent molybdenum, about 2.5 to 6.9 percent tantalum, about 3 to 8 percent tungsten, 0 to about 1.5 percent niobium, 0 to about 6 percent rhenium, 0 to about 1.5 percent hafnium, 0 to about 2.2 percent silicon, 0 to about 1 percent boron, with the balance being nickel and impurities; wherein the bulk composition range comprises less than about 2.2 total weight percent of elements selected from boron and silicon.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1993},
month = {8}
}