Abstract: A process for producing a crack-free and dense three-dimensional article of a gamma-prime precipitation-strengthened nickel-base superalloy, with more than 6 wt. % of [2 Al (wt. %)+Ti (wt. %)], which involves: (a) preparing a powder layer of a gamma-prime precipitation-strengthened nickel-based alloy material, with uniform thickness on a SLM apparatus substrate plate, or on a previously processed powder layer; (b) melting the prepared powder layer by scanning with a focused laser beam an article cross section area according to a three-dimensional sliced model with calculated cross sections, stored in the SLM control unit; (c) lowering the substrate plate by one layer thickness; and (d) repeating (a) to (c) until reaching a final cross section according to the three-dimensional sliced model, wherein, for (b), the laser power, focus diameter of the focal spot, and scan speed of the focused laser beam are adjusted to obtain heat dissipation welding.

Abstract: A method for repairing or reconditioning a damaged component includes working the damaged component by removing a damaged region from the damaged component while creating a cutout corresponding to the damaged region so as to provide a worked component. The worked component is measured and a computer-aided design (CAD) model of a replacement piece based on the measuring and is configured to be inserted into the cutout of the worked component is created. The replacement piece is produced based on the CAD model. The replacement piece and the worked component are connected by joining.

Abstract: The invention relates to a method for additively manufacturing an article made of a difficult-to-weld highly-precipitation-strengthened Ni-base super alloy that comprises Al and Ti in the sum of more than 5 wt.-% or a difficult-to weld carbide/solution-strengthened cobalt (Co)-base super alloy, whereby a metal particle mixture of at least a first phase and a second phase is provided as a starting material, said first phase of the mixture being a base material and said second phase of the mixture being a material which is a derivative of the first material and has relative to said material of said first phase an improved weldability, and whereby the metal particle mixture is processed by means of an additive manufacturing process which is one of selective laser melting (SLM), selective laser sintering (SLS), electron beam melting (EBM), laser metal forming (LMF), laser engineered net shape (LENS), or direct metal deposition (DMD).

Abstract: The disclosure refers to a method for manufacturing a three-dimensional article, the method including successively building up the article from a metallic base material by means of an additive manufacturing process, thereby creating an article with a substantial anisotropy of its properties and heat treating the manufactured article at a sufficiently high temperature to reduce the anisotropy significantly by recrystallization and/or grain coarsening.

Abstract: A process for producing a crack-free and dense three-dimensional article of a gamma-prime precipitation-strengthened nickel-base superalloy, with more than 6 wt. % of [2 Al (wt. %)+Ti (wt. %)], which involves: (a) preparing a powder layer of a gamma-prime precipitation-strengthened nickel-based alloy material, with uniform thickness on a SLM apparatus substrate plate, or on a previously processed powder layer; (b) melting the prepared powder layer by scanning with a focused laser beam an article cross section area according to a three-dimensional sliced model with calculated cross sections, stored in the SLM control unit; (c) lowering the substrate plate by one layer thickness; and (d) repeating (a) to (c) until reaching a final cross section according to the three-dimensional sliced model, wherein, for (b), the laser power, focus diameter of the focal spot, and scan speed of the focused laser beam are adjusted to obtain heat dissipation welding.

Abstract: A method for repairing or reconditioning a damaged component includes working the damaged component by removing a damaged region from the damaged component while creating a cutout corresponding to the damaged region so as to provide a worked component. The worked component is measured and a computer-aided design (CAD) model of a replacement piece based on the measuring and is configured to be inserted into the cutout of the worked component is created. The replacement piece is produced based on the CAD model.

Abstract: In a method for repairing and/or upgrading a component (10?), preferably of a gas turbine, especially a blade (10?), which component has been deformed during operation, a simplification with cost advantages is achieved by a first nominal CAD model (M1) of the non-deformed component (10) being made available, by the deformed component (10?) being measured, and by the first CAD-model (M1), with the aid of the data determined on the deformed component (10?), being transformed into a second CAD model (M2) of the deformed component (10?) by morphing. A cutting line, which determines a cut-out in the component (10?), and also an insert piece, which can be inserted in the cut-out, is established in the second CAD model (M2).