Abstract: To obtain layered heat-resistant composites with oxide fibers, a solid-phase method was used. The composite was a multilayer matrix of a viscous-plastic alloy Nb–C–Al and intermetallic compounds of niobium with aluminum, reinforced with Al2O3-oxide sapphire fibers. Fibers were obtained by the Stepanov method. Composites of the desired configuration were formed in the process of diffusion welding of multilayer packets assembled from U-shaped elements and the same aluminum elements with sapphire fibers inside. The microstructure of composites was investigated. The first results of mechanical tested.