In various embodiments, wire composed at least partially of arc-melted refractory metal material is utilized to fabricate three-dimensional parts by additive manufacturing.

In various embodiments, wire composed at least partially of arc-melted refractory metal material is utilized to fabricate three-dimensional parts by additive manufacturing.

In various embodiments, three-dimensional layered metallic parts are substantially free of gaps between successive layers, are substantially free of cracks, and have densities no less than 97% of the theoretical density of the metallic material.

In various embodiments, three-dimensional layered metallic parts are substantially free of gaps between successive layers, are substantially free of cracks, and have densities no less than 97% of the theoretical density of the metallic material.

In various embodiments, three-dimensional layered metallic parts are substantially free of gaps between successive layers, are substantially free of cracks, and have densities no less than 97% of the theoretical density of the metallic material.

In various embodiments, three-dimensional layered metallic parts are substantially free of gaps between successive layers, are substantially free of cracks, and have densities no less than 97% of the theoretical density of the metallic material.

A method for converting wire rod of nonferrous metals and alloys thereof to wire with high elongation and in the annealed state, wherein the reduction in diameter in order to pass from wire rod to wire is carried out by way of a plastic deformation process. The temperature of the metal subjected to plastic deformation is controlled in order to have, at the end of the plastic deformation process, the wire at a temperature higher than or equal to the recrystallization temperature. This avoids the thermal treatment of annealing, necessary in conventional production techniques, achieving a considerable saving in production costs and a wire with characteristics similar to those of a wire subjected to annealing.

A method for converting wire rod of nonferrous metals and alloys thereof to wire with high elongation and in the annealed state, wherein the reduction in diameter in order to pass from wire rod to wire is carried out by way of a plastic deformation process. The temperature of the metal subjected to plastic deformation is controlled in order to have, at the end of the plastic deformation process, the wire at a temperature higher than or equal to the recrystallization temperature. This avoids the thermal treatment of annealing, necessary in conventional production techniques, achieving a considerable saving in production costs and a wire with characteristics similar to those of a wire subjected to annealing.

A tungsten wire is a tungsten wire containing tungsten or a tungsten alloy, a diameter of the tungsten wire is at most 100 μm, and a total number of torsional rotations to breakage per length of 50 mm of the tungsten wire (10) is greater than or equal to 250×exp(−0.026×D) when a tension that is 50% of a breakage tension of the tungsten wire is applied as a load, D denoting the diameter of the tungsten wire.

A tungsten wire is a tungsten wire containing tungsten or a tungsten alloy, a diameter of the tungsten wire is at most 100 μm, and a total number of torsional rotations to breakage per length of 50 mm of the tungsten wire (10) is greater than or equal to 250×exp(−0.026×D) when a tension that is 50% of a breakage tension of the tungsten wire is applied as a load, D denoting the diameter of the tungsten wire.