The invention relates to a method for producing a layer composite and to a layer composite produced according to the following method steps - providing at least one layer made of a metal and/or a metal alloy and/or at least one layer made of a metal which forms a mixed crystal together with a refractory metal, - stacking the layers in an alternating manner so as to form a layer stack while forming contact surfaces, and - diffusion welding the layers in the layer stack in the absence of an oxidizing atmosphere at a temperature between 0.4 and 0.9 times the melting temperature of the metal and at a pressure with a directional component oriented orthogonally to the contact surfaces, wherein - the respective level of the pressure and/or the temperature varies during the diffusion welding process.
