US2018133846A1PendingUtilityA1
Precipitation strengthened nickel based welding material for fusion welding of superalloys
Est. expiryDec 24, 2033(~7.5 yrs left)· nominal 20-yr term from priority
B23K 35/24B23K 35/0227B23K 35/0261C22F 1/10B23K 35/3033C22C 19/057B23K 35/304C22C 19/056B23K 35/30B23K 35/0255B23P 6/00B23K 35/0222C22C 19/05C22C 30/00
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Claims
Abstract
A precipitation strengthened nickel based welding material that comprises 5-15 wt. % Co, 5-25 wt. % Cr, 1-6 wt. % Al, 0.05-0.2 wt. % C, 0.015-0.4 wt. % B, 1-3 wt. % Si, chemical elements selected from among tungsten and molybdenum from about 1 to 20 wt. %, chemical elements selected from among titanium, zirconium, hafnium, tantalum and rhenium from about 1 to 18 wt. % and nickel with impurities to balance, wherein the boron content is inversely proportional to silicon content and decreases from about 0.3 wt. % to about 0.015 wt. % when silicon content increases from about 1 wt. % to about 3 wt. % produces sound high strength and high oxidation resistance crack free welds on precipitation strengthened superalloys and single crystal materials.
Claims
exact text as granted — not AI-modified1 . A method of producing a precipitation strengthened nickel based welding material for fusion welding of superalloys, the method comprising:
combining the following in weight percentages:
Cobalt from about
5 to 15 wt. %
Chromium from about
5 to 25 wt. %
Aluminum from about
1 to 6 wt. %
Carbon from about
0.05 to 0.2 wt. %
Boron from about
0.015 to 0.4 wt. %
Silicon from about
1 to 3 wt. %
a combination of one or more of Tungsten and Molybdenum for
a combined total wt. % from about 1 to 20 wt. %
a combination of one or more of Titanium, Zirconium, Hafnium,
Tantalum and Rhenium for a combined total wt. % from
about 1 to 18 wt. %, and
Nickel with impurities to balance;
wherein the boron content is reduced proportionately from about an initial 0.4 wt. % to about a final 0.015 wt. % with a proportionate increase in the silicon content from about an initial 1 wt. % to about a final 3 wt. % such that the total combined boron and silicon content ranges from about 1.4 wt. % to 3.015 wt. %.
2 . A method of producing precipitation strengthened nickel based welding material for fusion welding of superalloys, the method comprising:
combining the following in weight percentages:
Cobalt from about
8 to 10
wt. %
Chromium from about
14 to 18
wt. %
Molybdenum from about
3 to 5
wt. %
Tungsten from about
3 to 5
wt. %
Titanium from about
3 to 6
wt. %
Zirconium from about
0.04 to 0.06
wt. %
Aluminum from about
2 to 4
wt. %
Carbon from about
0.05 to 0.2
wt. %
Boron from about
0.1 to 0.35
wt. %
Silicon from about
1 to 3
wt. %, and
a combination of one or more of Titanium, Zirconium, Hafnium,
Tantalum and Rhenium for a combined total wt. % from about
1 to 18 wt. %, and
Nickel with impurities to balance;
wherein the boron content is reduced proportionately from about an initial 0.35 wt. % to about a final 0.1 wt. % with a proportionate increase in the silicon content from about an initial 1 wt. % to about a final 3 wt. % such that the total combined boron and silicon content ranges from about 1.35 wt. % to 3.1 wt. %.
3 . The method of precipitation strengthening nickel based welding material for fusion welding of superalloys of claim 1 , wherein the following are combined:
Cobalt from about
11 to 13
wt. %
Chromium from about
6 to 8
wt. %
Molybdenum from about
1 to 3
wt. %
Tungsten from about
4 to 6
wt. %
Zirconium from about
0.01 to 0.03
wt. %
Aluminum from about
5 to 6
wt. %
Carbon from about
0.1 to 0.15
wt. %
Rhenium from about
1 to 3
wt. %
Tantalum from about
5 to 7
wt. %
Boron from about
0.015 to 0.3
wt. %
Silicon from about
1.2 to 1.8
wt. %, and
Nickel with impurities to balance
4 . The method of precipitation strengthening nickel based welding material for fusion welding of superalloys of claim 3 , wherein the boron content is reduced proportionately from about 0.4 wt. % to about 0.1 wt. % with a proportionate increase in the silicon content from about 1 wt. % to about 3 wt. % such that the total boron and silicon content ranges from about 1.4 wt. % to 3.1 wt. %.
5 . The method according to claim 1 , wherein the precipitation strengthened nickel based welding material for fusion welding of superalloys produced is a welding powder.
6 . The method according to claim 1 , wherein the precipitation strengthened nickel based welding material for fusion welding of superalloys produced is a welding wire.
7 . The method according to claim 1 , wherein the precipitation strengthened nickel based welding material for fusion welding of superalloys produced is for use in a repair section of a turbine engine component.
8 . A precipitation strengthened nickel based welding material for fusion welding of superalloys comprised of the following elements in weight percentages:
Cobalt from about
5 to 15 wt. %
Chromium from about
5 to 25 wt. %
Aluminum from about
1 to 6 wt. %
Carbon from about
0.05 to 0.2 wt. %
Boron from about
0.015 to 0.4 wt. %
Silicon from about
1 to 3 wt. %
Selected from among Tungsten and Molybdenum from
about 1 to 20 wt. %
Selected from among Titanium, Zirconium, Hafnium, Tantalum
and Rhenium from about 1 to 18 combined total wt. %, and
Nickel with impurities to balance;
wherein the boron content is reduced proportionately from about an initial 0.4 wt. % to about a final 0.015 wt. % with a proportionate increase in the silicon content from about an initial 1 wt. % to about a final 3 wt. % such that the total combined boron and silicon content ranges from about 1.4 wt. % to 3.015 wt. %.
9 . A precipitation strengthened nickel based welding material for fusion welding of superalloys comprised of the following elements in weight percentages:
Cobalt from about
8 to 10
wt. %
Chromium from about
14 to 18
wt. %
Molybdenum from about
3 to 5
wt. %
Tungsten from about
3 to 5
wt. %
Titanium from about
3 to 6
wt. %
Zirconium from about
0.04 to 0.06
wt. %
Aluminum from about
2 to 4
wt. %
Carbon from about
0.05 to 0.2
wt. %
Boron from about
0.1 to 0.35
wt. %
Silicon from about
1 to 3
wt. %, and
Selected from among Titanium, Zirconium, Hafnium, Tantalum
and Rhenium from about 1 to 18 combined total wt. %, and
Nickel with impurities to balance;
wherein the boron-silicon content is determined wherein the boron content is reduced proportionately from about an initial 0.35 wt. % to about a final 0.1 wt. % with a proportionate increase in the silicon content from about an initial 1 wt. % to about a final 3 wt. % such that the total combined boron and silicon content ranges from about 1.35 wt. % to 3.1 wt. %.
10 . The precipitation strengthened nickel based welding material for fusion welding of superalloys of claim 8 , limited to the following in weight percentages:
Cobalt from about
11 to 13
wt. %
Chromium from about
6 to 8
wt. %
Molybdenum from about
1 to 3
wt. %
Tungsten from about
4 to 6
wt. %
Zirconium from about
0.01 to 0.03
wt. %
Aluminum from about
5 to 6
wt. %
Carbon from about
0.1 to 0.15
wt. %
Rhenium from about
1 to 3
wt. %
Tantalum from about
5 to 7
wt. %
Boron from about
0.015 to 0.3
wt. %
Silicon from about
1.2 to 1.8
wt. %, and
Nickel with impurities to balance
11 . The precipitation strengthened nickel based welding material claimed in claim 10 wherein the boron content reduced proportionately from about 0.4 wt. % to about 0.1 wt. % with a proportionate increase in the silicon content from about 1 wt. % to about 3 wt. % such that the total boron and silicon content ranges from about 1.4 wt. % to 3.1 wt. %.Cited by (0)
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