A method for producing a new or repairing a used and damaged turbine blade crown made of a gamma prime (γ') precipitation hardened nickel base superalloy with a volume fraction of more than 25 % of gamma-prima phase, the method comprising the step of: a) providing a turbine blade comprising a dense inner layer including cooling channels designed for guiding a cooling medium to the open porous outer layer, which cooling channels either end at the interface to the open porous outer layer or partly or fully penetrate the open-porous outer layer; b) filling with a polymeric substance and an inorganic filler material the cooling channels; c) building upon the dense inner layer an open-porous outer layer, wherein the building of the outer layer is performed by selective laser melting of layerwise deposited metal powder with a laser beam; d) applying a subsequent heat treatment step for further adjustment of the microstructure and for burning out the polymeric substance and an inorganic introduced into the cooling channels before the selective laser melting step of building of the outer layer; e) applying onto the open porous surface a thermal barrier coating layer is onto the open porous outer layer; wherein the selective laser melting processing parameters are selectively adjusted to locally tailor the microstructure and porosity of the produced article; wherein the tailored microstructure comprises in-situ generated second phase particles, preferably hard-phase particle or solid lubricants, which are at least partly generated by supplying during the selective laser melting processing a reactive gas; wherein during the selective laser melting processing the composition of the reactive gas is actively changed. a) providing a turbine blade comprising a dense inner layer including cooling channels designed for guiding a cooling medium to the open porous outer layer, which cooling channels either end at the interface to the open porous outer layer or partly or fully penetrate the open-porous outer layer; b) filling with a polymeric substance and an inorganic filler material the cooling channels; c) building upon the dense inner layer an open-porous outer layer, wherein the building of the outer layer is performed by selective laser melting of layerwise deposited metal powder with a laser beam; d) applying a subsequent heat treatment step for further adjustment of the microstructure and for burning out the polymeric substance and an inorganic introduced into the cooling channels before the selective laser melting step of building of the outer layer; e) applying onto the open porous surface a thermal barrier coating layer is onto the open porous outer layer; wherein the selective laser melting processing parameters are selectively adjusted to locally tailor the microstructure and porosity of the produced article; wherein the tailored microstructure comprises in-situ generated second phase particles, preferably hard-phase particle or solid lubricants, which are at least partly generated by supplying during the selective laser melting processing a reactive gas; wherein during the selective laser melting processing the composition of the reactive gas is actively changed.