Disclosed is a conductive ink composition and a manufacturing method thereof. The composition includes about 50 to about 99 wt % copper nanoparticles and about 1 to about 50 wt % tin. Copper nanoparticles are atomized and suspended in a tin bath, wherein the copper nanoparticles are evenly dispersed within the bath through sonification. The composition is cooled, extracted, and formed into a filament for use as a conductive ink. The ink has a resistivity of about 46.2×E−9 Ω*m to about 742.5×E−9 Ω*m. Once in filament form, the tin-copper mix will be viable for material extrusion, thus allowing for a lower cost, electrically conductive traces to be used in additive manufacturing.

A scandium-containing aluminium powder alloy, wires and materials including said alloy, and a method for producing the scandium-containing aluminium powder alloy, the wires and materials, the proportion of scandium in the scandium-containing aluminium powder alloy being elevated, are disclosed. At least one element is selected from the group consisting of the lanthanum group except for Ce, Y, Ga, Nb, Ta, W, V, Ni, Co, Mo, Li, Th, Ag.

A scandium-containing aluminium powder alloy, wires and materials including said alloy, and a method for producing the scandium-containing aluminium powder alloy, the wires and materials, the proportion of scandium in the scandium-containing aluminium powder alloy being elevated, are disclosed. At least one element is selected from the group consisting of the lanthanum group except for Ce, Y, Ga, Nb, Ta, W, V, Ni, Co, Mo, Li, Th, Ag.

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.

An aluminum alloy material which has high yield strength and excellent electric and thermal conductivity and can have a constant break elongation even when the aluminum alloy material has a small diameter. The aluminum alloy material has an alloy composition including 0.05 to 1.50 mass % of Fe, at least one of 0.01 to 0.15 mass % of Si, 0.01 to 0.30 mass % of Cu and 0.01 to 1.50 mass % of Mg, and a remainder made up by Al and unavoidable impurities, and has a fibrous metallic structure in which a plurality of crystal grains extend in line in one direction. The average value of maximum dimensions of the plurality of crystal grains in a direction perpendicular to the length direction is 800 nm or less in a cross section parallel to the aforementioned one direction, and there is no specific void of which the maximum dimension in a direction perpendicular to the length direction is 1.0 μm or more as observed at a center part of the cross section in the thickness direction or the abundance of the specific voids is 10 or less per 10000 μm.sup.2.

A powder for producing a superconducting component. The powder includes Nb.sub.xSn.sub.y, where 1≤x≤6 and 1≤y≤5. The powder does not have any separate NbO phases and/or SnO phases.

A powder for the production of a superconducting component. The powder includes Nb.sub.xSn.sub.y, where 1≤x≤6 and 1≤y≤5, and three-dimensional agglomerates having a particle size D90 of less than 400 μm, as determined via a laser light scattering. The three-dimensional agglomerates have primary particles which have an average particle diameter of less than 15 μm, as determined via a scanning electron microscopy, and pores of which at least 90% have a diameter of from 0.1 to 20 μm, as determined via a mercury porosimetry.

A carbon nanotube composite wire 2 includes: a carbon nanotube 6; and a sintered layer 8 attached to a surface of the carbon nanotube 6. The sintered layer 8 includes a large number of silver flakes 14. These silver flakes 14 are bonded to each other by sintering. Flat surfaces 16 of silver flakes 14 partly overlap, or are partly in contact with, flat surfaces 16 of other adjacent silver flakes 14. An electrically conductive network is formed by these silver flakes 14 being adjacent to each other.

A carbon nanotube composite wire 2 includes: a carbon nanotube 6; and a sintered layer 8 attached to a surface of the carbon nanotube 6. The sintered layer 8 includes a large number of silver flakes 14. These silver flakes 14 are bonded to each other by sintering. Flat surfaces 16 of silver flakes 14 partly overlap, or are partly in contact with, flat surfaces 16 of other adjacent silver flakes 14. An electrically conductive network is formed by these silver flakes 14 being adjacent to each other.

In various embodiments, additive manufacturing is utilized to fabricate three-dimensional metallic parts using metallic alloy wire as a feedstock material.