A multi-material component joined by a high entropy alloy is provided, as well as methods of making a multi-material component by joining dissimilar materials with high entropy alloys.

An additive manufacturing apparatus is provided and may include at least one build unit; a build platform; and at least one collector positioned on the apparatus such that the at least one collector contacts an outer surface of a build wall as the build wall is formed during a build. Methods are also provided for manufacturing at least one object.

The invention relates to a process for producing a pipe fitting (10), for example a reduction piece, a pipe elbow or a branch, wherein a metallic material (11) is melted by heating, and wherein a plurality of material layers (12) is produced in a successive manner from the melted material (11), wherein the in each case produced material layer (12) is materially bonded to the in each case previous material layer (12), and wherein the pipe fitting (10) is formed from the material layers (12) bonded to one another. The pipe fitting (10) is produced by buildup welding, for example arc welding or beam welding.

An additive manufacturing device is provided with a beam irradiation unit irradiating a conductive powder disposed in a layered shape with a beam, a nondestructive inspection unit detecting a flaw in a surface layer of an additively manufactured article formed of the hardened conductive powder, and an energy control unit controlling energy of the beam. The energy control unit increases energy of a beam when a repairing region set in accordance with results of flaw detection by the nondestructive inspection unit is irradiated with the beam.

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

A method for producing articles from iridium metal nanopowder. This invention relates to the sphere of powder metallurgy and may find application in the production of different articles from iridium. Technically, the object of the invention is development of a new technology. To this aim a method is proposed for the production of articles from iridium based on use of chemically pure metal of not less than 99.99 purity, produced by electron-beam remelting, characterized in that the required material is turned to nanopowder of less than 100 nm dispersity from which seamless articles of various configuration are molded by their compacting at room temperature followed by baking, with the resulting isotropic structure featuring 100-300 nm grain size and strength characteristics being improved by 200-300%.

A component includes a body, and an interface in the body defining a first and second portion of the body made by different melting beam sources of a multiple melting beam source additive manufacturing system during a single build. The component also includes a channel extending through the body. The channel includes an interface-distant area on opposing sides of the interface, each interface-distant area having a first width. The channel also includes an enlarged width area fluidly communicative with the interface-distant areas and spanning the interface, the enlarged width area having a second width larger than the first width. Any misalignment of the melting beams at the interface is addressed by the enlarged width area, eliminating the problem of reduced cooling fluid flow in the channel.

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.

A method and an apparatus for collecting powder samples in real-time in powder bed fusion additive manufacturing may involves an ingester system for in-process collection and characterizations of powder samples. The collection may be performed periodically and uses the results of characterizations for adjustments in the powder bed fusion process. The ingester system of the present disclosure is capable of packaging powder samples collected in real-time into storage containers serving a multitude purposes of audit, process adjustments or actions.

An additive manufacturing apparatus includes: a build drum, the build drum having a peripheral wall defining a worksurface, the build drum being mounted for rotation about a central axis; a drive mechanism operable to rotate the build drum about the central axis, to hold a solidifiable material on the worksurface by centrifugal force; and a material deposition and solidification apparatus, including: a material depositor operable to deposit the solidifiable material on the worksurface; and an apparatus operable to selectively solidify the solidifiable material.