Abstract: A Ni-based superalloy composition to be used for powder-based additive manufacturing (AM) technology, such as selective laser melting (SLM) or electron beam melting (EBM). The cracking susceptibility during an AM process is considerably reduced by controlling the amount of elements, especially Hf, that form low-melting eutectics.

Abstract: A Ni-base superalloy composition to be used for powder-based additive manufacturing (AM) technology, such as selective laser melting (SLM) or electron beam melting (EBM). The cracking susceptibility during an AM process is considerably reduced by controlling the amount of elements, especially Hf, that form low-melting eutectics.

Abstract: A Ni-base superalloy composition to be used for powder-based additive manufacturing (AM) technology, such as selective laser melting (SLM) or electron beam melting (EBM). The cracking susceptibility during an AM process is considerably reduced by controlling the amount of elements, especially Hf, that form low-melting eutectics.

Abstract: A method for manufacturing a mechanical component by additive manufacturing which includes at least one layering sequence of depositing a powder material and locally melting and resolidifying the powder material. In each layering sequence, a solid layer of solidified material is formed, wherein the solid layers jointly form a solid body. An annealing sequence subsequent to at least one layering sequence includes, locally heating at least a region of the solid body in effecting a local heat input to the immediately beforehand manufactured solid layer which was formed by the immediately precedent layering sequence, with temperature being is maintained below a melting temperature of the material.

Abstract: A method for manufacturing a mechanical component by additive manufacturing which includes at least one layering sequence of depositing a powder material and locally melting and resolidifying the powder material. In each layering sequence, a solid layer of solidified material is formed, wherein the solid layers jointly form a solid body. An annealing sequence subsequent to at least one layering sequence includes, locally heating at least a region of the solid body in effecting a local heat input to the immediately beforehand manufactured solid layer which was formed by the immediately precedent layering sequence, with temperature being is maintained below a melting temperature of the material.

Abstract: A Ni-base superalloy composition to be used for powder-based additive manufacturing (AM) technology, such as selective laser melting (SLM) or electron beam melting (EBM). The cracking susceptibility during an AM process is considerably reduced by controlling the amount of elements, especially Hf, that form low-melting eutectics.

Abstract: The invention relates to a method of post-built up heat treatment of an additively manufactured high strength component made of a gamma-prime strengthened superalloy based on Ni or Co or Fe or combinations thereof. An application of a rapid heating-up rate of 25 to 60° C./min in a specific temperature range during the first post-built heat treatment after additive manufacturing avoids or at least minimizes the gamma-prime precipitation in the component during heat-up. This results in crack-free components/articles compared to significant cracking present in conventionally heat treated components.

Abstract: Methods are disclosed for treating a base materials in a form of metallic powder made of super alloys based on Ni, Co, Fe or combinations thereof, or made of TiAl alloys, which treated powder can be used for additive manufacturing, such as for Selective Laser Melting of three-dimensional articles.

Abstract: The application relates to the technology of producing three-dimensional articles by powder-based additive manufacturing, such as selective laser melting or electron beam melting. Especially, it refers to a high oxidation resistant and high gamma-prime precipitation containing Ni-base super alloy powder on basis of IN738LC with a modified chemical composition. Such powder has the following chemical composition (in wt.-%): 15.7-16.3 Cr, 8.0-9.0 Co, 1.5-2.0 Mo, 2.4-2.8 W, 1.5-2.0 Ta, 3.2-3.7 Al, 2.2-3.7 Ti, 0.6-1.1 Nb, 0.09-0.13 C, 0.007-0.012 B, 0.0045?Zr<0.03, 0.001?Si<0.03, remainder Ni and unavoidable residual elements and in addition a powder size distribution between 10 and 100 ?m and a spherical morphology. As an advantage nearly crack free three-dimensional articles can be produced with more productive process parameters and without complicated and time consuming variations of the addive manufacturing processes (e.g. pre-heating) and/or post processing (e.g. hot isostatic pressing HIP).

Abstract: A method for producing a metallic component comprises the steps of first preparing a component by means of an additive manufacturing process, and second exposing said manufactured component to a heat treatment. Improved properties of the resulting component are achieved by said heat treatment comprising a zone annealing step.

Abstract: The invention relates to a method for manufacturing a component, especially for gas turbines and other thermo machinery. The method includes providing a data set defining the component for being used in an additive manufacturing process; manufacturing said component by means of said additive manufacturing process according to said data set; and subjecting said manufactured component to a heat treatment (HT) in order to change the microstructure of the manufactured component.

Abstract: The invention relates to a method for producing a three-dimensional article or at least a part of such an article made of a gamma prime (??) precipitation hardened nickel base superalloy with a high volume fraction (>25%) of gamma-prima phase which is a difficult to weld superalloy, or made of a cobalt base superalloy, or of a non-castable or difficult to machine metal material by means of selective laser melting (SLM), in which the article is produced by melting of layerwise deposited metal powder with a laser beam characterized in that the SLM processing parameters are selectively adjusted to locally tailor the microstructure and/or porosity of the produced article or a part of the article and therefore to optimize desired properties of the finalized article/part of the article.

Abstract: The invention relates to a method of post-built up heat treatment of an additively manufactured high strength component made of a gamma-prime strengthened superalloy based on Ni or Co or Fe or combinations thereof. An application of a rapid heating-up rate of 25 to 60° C./min in a specific temperature range during the first post-built heat treatment after additive manufacturing avoids or at least minimizes the gamma-prime precipitation in the component during heat-up. This results in crack-free components/articles compared to significant cracking present in conventionally heat treated components.