Use of spark plasma sintering for manufacturing superalloy compound components

Abstract

A method of manufacturing a superalloy compound component is provided. The component includes a first component portion primarily consisting of a first superalloy and a second component portion primarily consisting of a second superalloy or of a refractory metal. The method includes using Spark Plasma Sintering for forming the superalloy compound component.

We claim: 
     
         1 . A method of manufacturing a superalloy compound component, comprising:
 providing a first component portion primarily consisting of a first superalloy and a second component portion primarily consisting of a second superalloy or of a refractory metal; and   using Spark Plasma Sintering for forming the superalloy compound component.   
     
     
         2 . The method of  claim 1 , further comprising:
 providing a mould having first and second mould portions each defining an outer shape of the first component portion and the second component portion, respectively, arranging a first metal powder primarily consisting of the first superalloy in the first mould portion, arranging a second metal powder primarily consisting of the second superalloy or of the refractory metal in the second mould portion, and integrally forming the superalloy compound component by Spark Plasma Sintering the first and second metal powders in the mould.   
     
     
         3 . The method of  claim 1 , further comprising:
 providing a first component primarily consisting of the first superalloy and a second component primarily consisting of the second superalloy or of the refractory metal, arranging the first and second components to contact each other before using Spark Plasma Sintering for forming the superalloy compound component,   wherein the first component forms the first component portion, and   wherein the second component forms the second component portion of the superalloy compound component.   
     
     
         4 . The method of  claim 3 , further comprising:
 providing a layer of a superalloy powder in a contact region where the first component contacts the second component.   
     
     
         5 . The method of  claim 4 , wherein the superalloy powder primarily consists of either one of the first superalloy, the second superalloy or a mixture of the first superalloy and the second superalloy. 
     
     
         6 . The method of  claim 1 , wherein the Spark Plasma Sintering is carried out under vacuum. 
     
     
         7 . The method of  claim 1 , wherein the Spark Plasma Sintering includes pressing the first component portion and the second component portion. 
     
     
         8 . The method of  claim 1 , wherein the superalloy compound component is a gas turbine component. 
     
     
         9 . The method of  claim 1 , wherein at least one of the first and the second superalloys is a Ni-based superalloy. 
     
     
         10 . The method of  claim 9 , wherein the Ni-based superalloy comprises at least one of Al and Ti. 
     
     
         11 . The method of  claim 1 , wherein the second superalloy is different from the first superalloy.