High entropy alloys with non-high entropy second phases

Abstract

Embodiments of high entropy alloys which can contain non-high entropy second phases. The high entropy alloys can include a number of different principle elements which can form relatively simple structures, such as FCC or BCC. The high entropy alloys can also include secondary phases such as intermetallics, laves phases, carbide, borides, borocarbides, nitrides, silicides, aluminides, oxides, phosphides, phospates, sulfides, sulfates, hydrides, hydrates, and carbonitrides

What is claimed is: 
     
         1 . A strengthened high entropy alloy comprising:
 a high entropy matrix as defined by a FCC structure, a BCC structure, or a combination of both, wherein the high entropy matrix comprises at least three principal elements each comprising between 5 and 90 wt. % of the matrix; and   one or more secondary non-high entropy phases.   
     
     
         2 . The alloy of  claim 1 , wherein the high entropy matrix comprises at least three principal elements each comprising between 5 and 50 wt. % of the matrix. 
     
     
         3 . The alloy of  claim 1 , wherein the high entropy matrix comprises at least three principal elements each comprising between 5 and 35 wt. % of the matrix. 
     
     
         4 . The alloy of  claim 1 , wherein the one or more secondary non-high entropy phases is selected from the group consisting of intermetallics, laves phases, carbide, borides, borocarbides, nitrides, silicides, aluminides, oxides, phosphides, phospates, sulfides, sulfates, hydrides, hydrates, and carbonitrides 
     
     
         5 . The alloy of  claim 1 , wherein the one or more secondary non-high entropy phase comprises at least 1% of the volume fraction of the alloy. 
     
     
         6 . The alloy of  claim 1 , wherein the one or more secondary non-high entropy phase comprises at least 5% of the volume fraction of the alloy. 
     
     
         7 . The alloy of  claim 1 , wherein the one or more secondary non-high entropy phase comprises at least 20% of the volume fraction of the alloy. 
     
     
         8 . The alloy of  claim 1 , wherein the high entropy matrix comprises 4 or more principal elements. 
     
     
         9 . The alloy of  claim 1 , wherein the high entropy matrix comprises 5 or more principal elements. 
     
     
         10 . The alloy of  claim 1 , wherein the alloy comprises W 20 Ta 16 Nb 24 Mo 20 V 18 C 2 . 
     
     
         11 . A multi-component alloy having both high and non-high entropy phases, the alloy forming a material comprising:
 a high entropy matrix formed from at least three principle elements, the high entropy matrix comprising either one or two simple structures; and   at least one secondary non-high entropy phases;   wherein the high entropy matrix is embedded with the at least one secondary non-high entropy phases.   
     
     
         12 . The alloy of  claim 11 , wherein the one or two simple structures are an FCC structure, a BCC structure, or combinations thereof.