High strength multi-component alloy

Abstract

A high strength multi-component alloy contains multi-principal elements and is formulated under a design concept different from the prior art. The multi-component alloy contains Fe, Co, Ni, Cr, Cu and Al as main elements. Each main element of the multi-component alloy is in the range of about 5 to about 35 atom % based on the total number of atoms of the alloy. The multi-component alloy has high strength at high temperature.

What is claimed is:  
     
         1 . A high strength multi-component alloy, expressed in terms of atoms based on the total number of atoms of the alloy, comprising: 
 a % Fe, 5≦a≦35;    b % Co, 5≦b≦35;    c % Ni, 5≦c≦35;    d % Cr, 5≦d≦35;    e % Cu, 5≦e≦35; and    f % Al, 5≦f≦35;    wherein a+b+c+d+e+f≦100.    
     
     
         2 . The high strength multi-component alloy of  claim 1 , further comprises at least a secondary element other than Fe, Co, Ni, Cr, Cu and Al, in an amount within the range of 0.01-4.5 atom % based on the total number of atoms of the alloy.  
     
     
         3 . The high strength multi-component alloy of  claim 2 , wherein the secondary element is selected from the group consisting of molybdenum, tungsten, niobium, tantalum, scandium, titanium, vanadium, manganese, zirconium, boron, carbon, nitrogen and silicon.  
     
     
         4 . The high strength multi-component alloy of  claim 1 , wherein the respective atomic percentages of Fe, Co, Ni, Cr and Cu are 13-19% based on the total number of atoms of the alloy.  
     
     
         5 . A high strength multi-component alloy, expressed in terms of atoms based on the total number of atoms of the allow composition, comprising: 
 a % Fe, 5≦a≦35;    b % Co, 5≦b≦25;    c % Ni, 5≦c≦35;    d % Cr, 5≦d≦25;    e % Cu, 5≦e≦25; and    f % Al, 5≦f≦35;    wherein a+b+c+d+e+f≦100.    
     
     
         6 . The high strength multi-component alloy of  claim 5 , further comprises at least a secondary element other than Fe, Co, Ni, Cr, Cu and Al, in an amount within the range of 0.01-4.5 atom % based on the total number of atoms of the alloy.  
     
     
         7 . The high strength multi-component alloy of  claim 5 , wherein the secondary element is selected from the group consisting of molybdenum, tungsten, niobium, tantalum, scandium, titanium, vanadium, manganese, zirconium, boron, carbon, nitrogen and silicon.