Precipitation strengthened nickel based welding material for fusion welding of superalloys
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.
1. 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
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 Titanium, Zirconium, Hafnium, Tantalum and Rhenium from about 1 to 18 combined total wt. %, and
Nickel with impurities to balance.
2. 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 is a welding powder.