Heat treatment process

Abstract

A method of treating a wrought IN718 part comprising treating the part to a solution having a temperature of at least 980° C. for a time sufficient to remove precipitant present on the part.

What is claimed is:  
     
         1 . A method of treating a wrought IN718 part comprising heat treating the part with solution treatment at a temperature of at least 980° C. for a time sufficient to remove precipitant present on the part.  
     
     
         2 . The method of  claim 1  wherein the precipitant dissolves in the solution to form a single-phase solid solution.  
     
     
         3 . The method of  claim 1  further comprising quenching the part after solution treatment.  
     
     
         4 . The method of  claim 1  further comprising aging the part after solution treatment.  
     
     
         5 . The method of  claim 1  further comprising forming the part by forging, rolling, or extruding prior to solution treatment.  
     
     
         6 . The method of  claim 5  further comprising cooling the part aftyer forming the part.  
     
     
         7 . The method of  claim 1  wherein the solution treatment temperature is about 980° C. to about 1010° C.  
     
     
         8 . The method of  claim 1  further comprising heat treating the part with solution treatment for at least one hour.  
     
     
         9 . The method of  claim 8  further comprising heat treating the part with solution treatment for at least one hour to about 8 hours.  
     
     
         10 . A method of treating a wrought IN718 part comprising forming the part by forging, rolling, or extruding IN718 material; heat treating the part with solution treatment for at least about 980° C.; quenching the part in water or oil; and aging the part.  
     
     
         11 . The method of  claim 10  wherein the solution treatment temperature is about 980° C. to about 1010° C.  
     
     
         12 . The method of  claim 10  further comprising heat treating the part with solution treatment for at least one hour.  
     
     
         13 . The method of  claim 12  further comprising heat treating the part with solution treatment for at least one hour to about 8 hours.