High-temperature-resistant component and process for producing the high-temperature-resistant component

Abstract

A high-temperature component made of a nickel super-alloy has the following composition in wt %: 11-13% of Cr, 3-5% of W, 0.5-2.5% of Mo, 3-5% of Al, 3-5% of Ti, 3-7% of Ta, 1-5% of Re and a remainder of nickel.

1 . A high-temperature-resistant component, comprising:  
     a nickel-base superalloy having a composition including the following elements, in percent by weight:  
     
       
         
               
               
             
                   
               
                   
               
                 11-13% 
                 chromium 
               
                 3-5% 
                 tungsten 
               
                 0.5-2.5% 
                 molybdenum 
               
                 3-5% 
                 aluminum 
               
                 3-5% 
                 titanium 
               
                 3-7% 
                 tantalum 
               
                  0-12% 
                 cobalt 
               
                 0-1% 
                 niobium 
               
                 0-2% 
                 hafnium 
               
                 0-1% 
                 zirconium 
               
                   0-0.05% 
                 boron 
               
                   0-0.2% 
                 carbon 
               
                 1-5% 
                 rhenium, and 
               
                   
               
                   
               
           
              
              
             
             
              
              
              
              
              
              
              
              
              
              
              
              
              
              
              
             
          
         
       
     
     a remainder of Ni and impurities.  
   
   
       2 . The component according to  claim 1 , wherein the rhenium has a content of at least 2% by weight.  
   
   
       3 . The component according to  claim 1 , which further comprises ruthenium having a content of from 0.1% to 5% by weight.  
   
   
       4 . The component according to  claim 3 , wherein the ruthenium has a maximum content of 3% by weight.  
   
   
       5 . The component according to  claim 1 , wherein the ruthenium in said superalloy has a minimum content of 0.5% by weight.  
   
   
       6 . A gas turbine blade, comprising:  
     a nickel-base superalloy having a composition including the following elements, in percent by weight:  
     
       
         
               
               
             
                   
               
                   
               
                 11-13% 
                 chromium 
               
                 3-5% 
                 tungsten 
               
                 0.5-2.5% 
                 molybdenum 
               
                 3-5% 
                 aluminum 
               
                 3-5% 
                 titanium 
               
                 3-7% 
                 tantalum 
               
                  0-12% 
                 cobalt 
               
                 0-1% 
                 niobium 
               
                 0-2% 
                 hafnium 
               
                 0-1% 
                 zirconium 
               
                   0-0.05% 
                 boron 
               
                   0-0.2% 
                 carbon 
               
                 1-5% 
                 rhenium, and 
               
                   
               
                   
               
           
              
              
             
             
              
              
              
              
              
              
              
              
              
              
              
              
              
              
              
             
          
         
       
     
     a remainder of Ni and impurities.  
   
   
       7 . A process for producing a component, which comprises:  
     casting the component according to  claim 1  in a conventional casting process.  
   
   
       8 . A process for producing a component, which comprises:  
     cooling the superalloy according to  claim 1  to solidify directionally or in monocrystalline form; and  
     carrying out the cooling step in vacuo with a liquid cooling metal or with a liquid inorganic salt.