Weld filler, use of the weld filler and welding process
The invention relates to a weld filler and to a use of a weld filler which significantly improves the weldability of some nickel-based superalloys and includes the following constituents (in wt %): 17.5%-20.0% chromium (Cr) 10.0%-12.0% cobalt (Co) 9.0%-10.5% molybdenum (Mo) 0.1%-3.3% titanium, in particular 3.0%-3.3% titanium (Ti), 1.4%-1.8% aluminum (Al), 0.04%-0.12% carbon, 0.003%-0.01% boron (B), remainder nickel.
1. A weld filler material, consisting of:
19 wt % chromium;
11 wt % cobalt;
10 wt % molybdenum;
3.0 wt %-3.3 wt % titanium;
1.6 wt % aluminum;
0.09 wt % carbon;
0.005 wt % boron;
0.1 wt % to 2.5 wt % tantalum;
at most 0.35 wt % iron;
at most 0.05 wt % manganese;
at most 0.5 wt % silicon;
at most 0.0075 wt % sulfur;
at most 0.015 wt % phosphorus;
0.01 wt %-0.1 wt % zirconium;
0.25 wt %-0.5 wt % hafnium;
0.05 wt %-0.1 wt % lanthanum; and
remainder nickel.
2. A method for welding a nickel based component, comprising:
subjecting the component to an overageing heat treatment; and
welding the component with a filler material consisting of:
19 wt % chromium,
11 wt % cobalt,
10 wt % molybdenum,
3.0 wt %-3.3 wt % titanium,
1.6 wt % aluminum,
0.09 wt % carbon,
0.005 wt % boron,
0.1 wt % to 2.5 wt % tantalum,
at most 0.35 wt % iron,
at most 0.05 wt % manganese,
at most 0.5 wt % silicon,
at most 0.0075 wt % sulfur,
at most 0.015 wt % phosphorus,
0.01 wt %-0.1 wt % zirconium,
0.25 wt %-0.5 wt % hafnium,
0.05 wt %-0.1 wt % lanthanum, and
remainder nickel.