Fabrication of high-entropy alloy wire and multi-principal element alloy wire

Abstract

In various embodiments, metallic wires are fabricated by combining one or more powders of substantially spherical metal particles with one or more powders of non-spherical particles within one or more optional metallic tubes. The metal elements within the powders (and the one or more tubes, if present) collectively define a high entropy alloy of five or more metallic elements or a multi-principal element alloy of four or more metallic elements.

What is claimed is: 
     
         1 .- 92 . (canceled) 
     
     
         93 . A metallic alloy wire preform comprising four or more metallic elements, the wire preform comprising an assemblage of (i) one or more first metal powders each comprising one or more of the metallic elements, wherein particles of each first metal powder are substantially spherical, and (ii) one or more second metal powders each comprising one or more of the metallic elements, wherein particles of each second metal powder are non-spherical. 
     
     
         94 . The wire preform of  claim 93 , wherein the four or more metallic elements comprise at least four of Nb, Ta, Mo, W, Ti, Hf, V, Zr, Al, or Cr. 
     
     
         95 . The wire preform of  claim 93 , wherein at least one first metal powder is an elemental powder consisting essentially of one of the metallic elements. 
     
     
         96 . The wire preform of  claim 93 , wherein at least one first metal powder is an alloy powder consisting essentially of two or more of the metallic elements. 
     
     
         97 . The wire preform of  claim 93 , wherein at least one second metal powder is an elemental powder consisting essentially of one of the metallic elements. 
     
     
         98 . The wire preform of  claim 93 , wherein at least one second metal powder is an alloy powder consisting essentially of two or more of the metallic elements. 
     
     
         99 . The wire preform of  claim 93 , wherein the non-spherical particles of at least one second metal powder are angular flakes. 
     
     
         100 . The wire preform of  claim 93 , further comprising one or more metallic tubes surrounding the one or more first metal powders and the one or more second metal powders, each metallic tube comprising at least one of the metallic elements. 
     
     
         101 . An alloy wire comprising four or more metallic elements and extending along an axial direction, the wire comprising an assemblage of (i) one or more first metal powders each comprising one or more of the metallic elements, wherein at least some particles of at least one first metal powder are substantially spherical, and (ii) one or more second metal powders each comprising one or more of the metallic elements, wherein at least some particles of at least one second metal powder are elongated in the axial direction and extend at least partially around particles of the one or more first metal powders. 
     
     
         102 . The wire of  claim 101 , wherein at least some particles of at least one first metal powder are elongated in the axial direction. 
     
     
         103 . The wire of  claim 101 , wherein particles of at least one first metal powder are less ductile than particles of at least one second metal powder. 
     
     
         104 . The wire of  claim 101 , wherein particles of all of the first metal powders are less ductile than particles of all of the second metal powders. 
     
     
         105 . The wire of  claim 101 , wherein the one or more first metal powders comprise at least one of Mo or W. 
     
     
         106 . The wire of  claim 101 , wherein the one or more second metal powders comprise at least one of Ta or Nb. 
     
     
         107 . The wire of  claim 101 , wherein the four or more metallic elements comprise at least four of Nb, Ta, Mo, W, Ti, Hf, V, Zr, Al, or Cr. 
     
     
         108 . The wire of  claim 101 , wherein at least one first metal powder is an elemental powder consisting essentially of one of the metallic elements. 
     
     
         109 . The wire of  claim 101 , wherein at least one first metal powder is an alloy powder consisting essentially of two or more of the metallic elements. 
     
     
         110 . The wire of  claim 101 , wherein at least one second metal powder is an elemental powder consisting essentially of one of the metallic elements. 
     
     
         111 . The wire of  claim 101 , wherein at least one second metal powder is an alloy powder consisting essentially of two or more of the metallic elements. 
     
     
         112 . The wire of  claim 101 , further comprising one or more metallic tubes surrounding the one or more first metal powders and the one or more second metal powders, each metallic tube comprising at least one of the metallic elements.