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This paper reviews our current research activities on developing new multiphase metallic materials for structural applications with a temperature capability beyond 1,200ºC. Two promising material systems have been chosen: fi rst, alloys in the system Mo-Si-B which have demonstrated potential due to their high melting point of around 2,000ºC and due to the formation of a protecting borosilicate glass layer on the surface at temperatures exceeding 900ºC; and second, novel Co-Re-based alloys which have been chosen as a model system for complete miscibility between the elements cobalt and rhenium, offering the possibility of continuous increases of the melting point of the alloy through rhenium additions.

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