MANUFACTURING A COMPONENT OF SINGLE CRYSTAL OR DIRECTIONALLY SOLIDIFIED MATERIAL

摘要

The present invention relates to a method for manufacturing a component (10) of a single crystal or a directionally solidified material, said component (10) being manufactured having a predefined shape (12), comprising at least the following steps: superimposing at least a powder layer (14) of a powder of a first material onto at least a surface (16) of a substrate (18) out of a second, single crystal or directionally solidified, material; transforming the powder layer (14) into a substrate layer (20) with a new surface (22) of the substrate (18) by altering at least a physical condition of the first material of the powder by applying energy to the powder layer (14); wherein said substrate layer (20) is becoming a part of the substrate (18); wherein the second, single crystal or directionally solidified, material of the substrate (18) has a grain orientation (24) and the material of the substrate layer (20) has a grain orientation (26); wherein the material of the substrate layer (20) adopts the same grain orientation (24) as the grain orientation (26) of the substrate (18) during the transforming process and wherein the steps are repeated till the component (10) has grown layer by layer into the predefined shape (12) while a process temperature (Tp) is maintained below a melting temperature (Tm) of at least the first material and the component (10) has been manufactured thereby.