Abstract: A nozzle includes a nozzle member includes a first passage, a second passage surrounding the first passage and configured to eject powder and fluid from an end portion, a diffusion room apart from the end portion and configured to supply the powder and the fluid to the second passage, and a supply path to supply the powder and the fluid to the diffusion room. A first inner surface of the nozzle member includes a first curved surface in a conical shape having a diameter decreasing toward the end portion. A second inner surface of the nozzle member includes a second curved surface in a conical shape having a diameter decreasing toward the end portion. The second passage is formed between the first curved surface and the second curved surface. The diffusion room is formed between the first inner surface and the second inner surface.

Abstract: An additive manufacturing device includes a table that supports an additive manufactured object, and a manufacturing unit including a first nozzle that is movable with respect to the table and a second nozzle that is movable with respect to the table and also movable with respect to the first nozzle. The manufacturing unit discharges powder from at least one of the first nozzle and the second nozzle, and emits an energy beam from at least one of the first nozzle and the second nozzle to melt or sinter the powder to additively manufacture the object supported on the table.

Abstract: An additive manufacturing device includes a table that supports an additive manufactured object, and a manufacturing unit including a first nozzle that is movable with respect to the table and a second nozzle that is movable with respect to the table and also movable with respect to the first nozzle. The manufacturing unit discharges powder from at least one of the first nozzle and the second nozzle, and emits an energy beam from at least one of the first nozzle and the second nozzle to melt or sinter the powder to additively manufacture the object supported on the table.

Abstract: An additive manufacturing apparatus according to one embodiment includes a support surface, a manufacturing unit, and a control unit. The support surface can support an object that is additively manufactured. The manufacturing unit includes a nozzle that moves relative to the support surface, ejects powder, and outputs an energy ray to melt or sinter the powder, thereby forming a layer of the object. The manufacturing unit can change the orientation of the nozzle. The control unit can change a layer forming condition for the nozzle in accordance with a change in the orientation of the nozzle.

Abstract: A dissimilar material joined three-dimensional laminated and shaped object is shaped using a three-dimensional laminating and shaping apparatus. The three-dimensional laminating and shaping apparatus includes a material supplier that supplies materials of a three-dimensional laminated and shaped object to a shaping surface, an irradiator that irradiates the materials with a light beam, and a controller that controls the material supplier. The three-dimensional laminated and shaped object is a joined member obtained by joining dissimilar materials. The controller controls the material supplier to form a graded composition of the materials in a boundary region between the dissimilar materials of the three-dimensional laminated and shaped object.

Abstract: A dissimilar material joined three-dimensional laminated and shaped object is shaped using a three-dimensional laminating and shaping apparatus. The three-dimensional laminating and shaping apparatus includes a material supplier that supplies materials of a three-dimensional laminated and shaped object to a shaping surface, an irradiator that irradiates the materials with a light beam, and a controller that controls the material supplier. The three-dimensional laminated and shaped object is a joined member obtained by joining dissimilar materials. The controller controls the material supplier to form a graded composition of the materials in a boundary region between the dissimilar materials of the three-dimensional laminated and shaped object.

Abstract: A three-dimensional laminated and shaped object having a graded composition is accurately shaped. A three-dimensional laminating and shaping apparatus for shaping a three-dimensional laminated and shaped object having a graded composition by laminating a plurality of kinds of materials includes a material supplier that supplies the materials while executing a scan, an irradiator that irradiates the materials with a beam, and a controller that controls the material supplier. The controller controls the material supplier to supply, to a predetermined scanning area of a material scanning area, a necessary amount of a predetermined material for laminating one layer of the three-dimensional laminated and shaped object at a predetermined number of times.

Abstract: A raw powder having a composition containing, in weight percent, B: 2.2 to 3.0%; Si: 3.0 to 5.0%; Mo: 18 to 25%; Cu: 1 to 15%, the balance of Ni and unavoidable impurities, with a weight ratio of Mo content to B content being from 7 to 9, is produced using a molten metal spraying method, and the raw powder is then sintered, thereby a corrosion-resistant and wear-resistant Ni-based alloy is produced.