Shear-assisted extrusion assemblies are provided. The assemblies can include a billet containing assembly containing a billet comprising a billet outer material and a billet inner material in at least one cross-section; a tool operably engaged with the billet; an extrudate receiving channel configured to receive extrudate from the tool, wherein the extrudate comprises extruded outer material and extruded inner material in at least one cross-section, the extruded outer material being the same material as the billet outer material, and the extruded inner material being the same as the billet inner material. Methods for producing multi-material shear-assisted extrudate are also provided.

Shear-assisted extrusion assemblies are provided. The assemblies can include a billet containing assembly containing a billet comprising a billet outer material and a billet inner material in at least one cross-section; a tool operably engaged with the billet; an extrudate receiving channel configured to receive extrudate from the tool, wherein the extrudate comprises extruded outer material and extruded inner material in at least one cross-section, the extruded outer material being the same material as the billet outer material, and the extruded inner material being the same as the billet inner material. Methods for producing multi-material shear-assisted extrudate are also provided.

A billet adapted for use in a solid phase extrusion process to produce an extrudate, the billet including a billet body formed from Copper or Copper-Silver alloy, where the body defines a longitudinal void that extends along a longitudinal length of the body, powdered Graphene or powdered Carbon nano-tubes or nano-crystalline Carbon powder positioned in the longitudinal void and distributed evenly along the longitudinal length of the body, and where the weight percentage of the Carbon material relative to the metal in the body is between 10 ppm and 250 ppm, and where the billet is configured such that, after extrusion through the solid phase extrusion process to produce the extrudate, the extrudate has consistent conductivity is consistently greater than the conductivity of the Copper or Copper-Silver alloy.

A billet adapted for use in a solid phase extrusion process to produce an extrudate, the billet including a billet body formed from Copper or Copper-Silver alloy, where the body defines a longitudinal void that extends along a longitudinal length of the body, powdered Graphene or powdered Carbon nano-tubes or nano-crystalline Carbon powder positioned in the longitudinal void and distributed evenly along the longitudinal length of the body, and where the weight percentage of the Carbon material relative to the metal in the body is between 10 ppm and 250 ppm, and where the billet is configured such that, after extrusion through the solid phase extrusion process to produce the extrudate, the extrudate has consistent conductivity is consistently greater than the conductivity of the Copper or Copper-Silver alloy.

A metal matrix composite material and associated methods are disclosed. In one example, the metal matrix composite material includes ceramic particles distributed in multiple phases. In selected examples, the metal matrix composite material is formed by a process including applying a rotational force and an axial force to a feedstock at an interface and plasticizing a portion of the feedstock at the interface.

A metal matrix composite material and associated methods are disclosed. In one example, the metal matrix composite material includes ceramic particles distributed in multiple phases. In selected examples, the metal matrix composite material is formed by a process including applying a rotational force and an axial force to a feedstock at an interface and plasticizing a portion of the feedstock at the interface.