Gamma/gamma' hardened cobalt-based superalloy, powder and component

Abstract

A cobalt-based superalloy is provided that allows for the production of components that are easy to cast, easy to weld and can be used also at very elevated temperatures.

1 . A cobalt-based superalloy having at least (in at. %):
 tungsten (W): 8.5%-9.5%, in particular 9%,   aluminum (Al): 8.5%-9.5%, in particular 9%,   nickel (Ni): 18%-23%, in particular 20%-21%,   titanium (Ti): 1.5%-2.5%, in particular 2%,   tantalum (Ta): 1.5%-2.5%, in particular 2%,   chromium (Cr): 5%-7%, in particular 6%, optionally   hafnium (Hf): 0.05%-0.15%, in particular 0.1%,   boron (B): 0.005%-0.015%, in particular 0.01%, and   carbon (C): 0.05%-0.15%, in particular 0.1%.   
     
     
         2 . The cobalt-based superalloy as claimed in  claim 1 , which consists of tungsten (W), aluminum (Al), nickel (Ni), titanium (Ti), tantalum (Ta), chromium (Cr) and optionally hafnium (Hf), boron (B), and/or carbon (C). 
     
     
         3 . The cobalt-based superalloy as claimed in  claim 1 , which consists of tungsten (W), aluminum (Al), nickel (Ni), titanium (Ti), tantalum (Ta), chromium (Cr), hafnium (Hf), boron (B) and carbon (C). 
     
     
         4 . The cobalt-based superalloy as claimed in  claim 1 , which consists of tungsten (W), aluminum (Al), nickel (Ni), titanium (Ti), tantalum (Ta), chromium (Cr), hafnium (Hf) and carbon (C). 
     
     
         5 . The cobalt-based superalloy as claimed in  claim 1 , which consists of tungsten (W), aluminum (Al), nickel (Ni), titanium (Ti), tantalum (Ta), chromium (Cr) and carbon (C). 
     
     
         6 . The cobalt-based superalloy as claimed in  claim 1 , which consists of tungsten (W), aluminum (Al), nickel (Ni), titanium (Ti), tantalum (Ta), chromium (Cr), hafnium (Hf) and boron (B). 
     
     
         7 . The cobalt-based superalloy as claimed in  claim 1 , which consists of tungsten (W), aluminum (Al), nickel (Ni), titanium (Ti), tantalum (Ta), chromium (Cr) and boron (B). 
     
     
         8 . The cobalt-based superalloy as claimed in  claim 1 , which consists of tungsten (W), aluminum (Al), nickel (Ni), titanium (Ti), tantalum (Ta), chromium (Cr) and hafnium (Hf). 
     
     
         9 . The cobalt-based superalloy as claimed in  claim 1 , which consists of tungsten (W), aluminum (Al), nickel (Ni), titanium (Ti), tantalum (Ta), chromium (Cr), boron (B) and carbon (C). 
     
     
         10 . A powder having an alloy as claimed in  claim 1 . 
     
     
         11 . A component, having an alloy as claimed in  claim 1 , made of a powder as claimed in  claim 10 . 
     
     
         12 . The component as claimed in  claim 11 , having a columnar or single-crystal structure, in particular columnar structures. 
     
     
         13 . The component as claimed in  claim 11 , having a single-crystal structure.