The need for high performance materials in aerospace, automotive and industrial components operating at temperatures in the range of 1100–1500°C has led to a surge in the research and development of the refractory metal silicide based intermetallics, multiphase alloys and composites. The silicides of Mo, W, Ti, Nb and Cr are attractive for high melting points, strength retention and ductile behaviour, combined with reasonable to excellent oxidation resistance at elevated temperatures. The major limitation to the widespread use of structural silicides is their inherent brittleness and poor fracture toughness at room temperature, which may be improved further by suitable alloying or tailoring composite microstructures or use of innovative processing routes. The high temperature deformation behaviour of the structural silicides is complex, and depends on the composition and alloy content, crystal structure, character of bonding and orientation, microstructural constitution (nature of phases present ...

A. B. Gokhale

Papers

The Nb-Si (Niobium-Silicon) system

The Mo-Si (Molybdenum-Silicon) system

The Cr−Si (Chromium-Silicon) system

The Ge-Mn (Germanium-Manganese) system

The Mn-Si (Manganese-Silicon) system