A method of additive manufacture is disclosed. The method can include providing an enclosure surrounding a powder bed and having an atmosphere including helium gas. A high flux laser beam is directed at a defined two dimensional region of the powder bed. Powder is melted and fused within the defined two dimensional region, with less than 50% by weight of the powder particles being displaced into any defined two dimensional region that shares an edge or corner with the defined two dimensional region where powder melting and fusing occurs.

A lamination molding apparatus capable of supplying a material powder steadily to a recoater head, is provided. A lamination molding apparatus including a chamber covering a desired molding region and being filled with an inert gas having a desired concentration; a recoater head moving in the chamber to supply a material powder on the molding region to form a material powder layer; and a material supplying unit to supply the material powder to the recoater head; wherein the recoater head includes a material holding section to hold the material powder; and a material discharging opening to discharge the material powder in the material holding section.

A core-shell structured alloy powder for additive manufacturing, an additively manufactured precipitation dispersion strengthened alloy component, and a method for additively manufacturing the component are provided. The alloy powder comprises a plurality of particles, where one or more of the plurality of particles comprise an alloy powder core and an oxygen or nitrogen rich shell disposed on at least a portion of the alloy powder core. The alloy powder core comprises an alloy constituent matrix with one or more reactive elements, where the reactive elements are configured to react with oxygen, nitrogen, or both. The alloy constituent matrix comprises stainless steel, an iron based alloy, a nickel based alloy, a nickel-iron based alloy, a cobalt based alloy, a copper based alloy, an aluminum based alloy, a titanium based alloy, or combinations thereof. The alloy constituent matrix comprises reactive elements present in a range from about 0.01 weight percent to 10 weight percent of a total weight of the alloy powder.

The present disclosure provides various apparatuses, systems, software, and methods for three-dimensional (3D) printing. The disclosure delineates various optical components of the 3D printing system, their usage, and their optional calibration. The disclosure delineates calibration of one or more components of the 3D printer (e.g., the energy beam).

The present disclosure provides various apparatuses, systems, software, and methods for three-dimensional (3D) printing. The disclosure delineates various optical components of the 3D printing system, their usage, and their optional calibration. The disclosure delineates calibration of one or more components of the 3D printer (e.g., the energy beam).

The present disclosure provides various apparatuses, systems, software, and methods for three-dimensional (3D) printing. The disclosure delineates various optical components of the 3D printing system, their usage, and their optional calibration. The disclosure delineates calibration of one or more components of the 3D printer (e.g., the energy beam).

The present disclosure provides various apparatuses, systems, software, and methods for three-dimensional (3D) printing. The disclosure delineates various optical components of the 3D printing system, their usage, and their optional calibration. The disclosure delineates calibration of one or more components of the 3D printer (e.g., the energy beam).

The invention relates to a laser cutting method for cutting a stainless steel workpiece using laser beam generation means comprising a silica fiber with an ytterbium-doped core to generate the laser beam. Preferably, the laser beam generated by the ytterbium-based fiber has a wavelength between 1.07 and 1.09 m, a quality factor of the laser beam is between 0.33 and 8 mm.Math.mrad, and the laser beam has a power of between 0.1 and 25 kW. The assistance gas for the laser beam is chosen from nitrogen, helium, argon and mixtures thereof, and, optionally, it further contains one or more additional compounds chosen from O.sub.2, CO.sub.2, H.sub.2 and CH.sub.4.

A method for the generative production of a three-dimensional component in a processing chamber, wherein the steps of providing a metal starting material in the processing chamber and melting the starting material by inputting energy are repeated multiple times, and wherein a process gas is provided in the processing chamber is disclosed. The method provides for the following steps wherein the hydrogen content of the process gases or of a sample of the process gas is determined; the oxygen content of the process gas or of a sample of the process gas is determined by means of an oxygen sensor and/or the dewpoint of the process gases or of a sample of the process gas is determined; and the value determined in step 2 for the oxygen content and/or the dewpoint is/are corrected with the aid of the value for the hydrogen content determined in step 1.

The invention relates to a method for producing a metallic workpiece in layers by means of additive manufacturing, metallurgical layers of the workpiece being produced by providing a metal material in manufacturing chamber for each metallurgical layer and applying a laser beam to said metal material, and providing a gas atmosphere in the manufacturing chamber during the application of the laser beam to the layers of the metal material, characterized in that a part of the gas atmosphere is drawn off from the manufacturing chamber as a gas stream, at least one parameter of the gas stream and/or the gas atmosphere being determined and being compared with a desired value. Depending on the comparison of the parameter with the desired value the gas stream is fed back to the manufacturing chamber and a process gas is supplied to the manufacturing chamber.