Intermetallic matrix composites

Appllca.tlons. The principal appHcations of nickel-base superalloys are in gas turbines, where they are utilized as blades, disks, and sheet metal parts. Abcraft gas turbines utilized in both commercial and military service depend upon superalloys for parts exposed to peak metal temperatures in excess of 1000°C. Typical gas turbine engines produced in the United States in 1990 utilized nickel and cobalt-base superalloys for 46% of total engine weight (41). However, programs for future aerospace propulsion systems emphasize the need for lightweight materials having greater heat resistance. For such apphcations, intermetallics matrix composites and ceramic composites are expected to be needed. 

Ananth, C.R. and Chandra, N. (1995). Numerical modelling of fiber push-out test in metallic and intermetallic matrix composites mechanics of failure process. J. Composite Mater. 29, 1488-1514. 

A. G. Evans, The Mechanical Properties of Reinforced Ceramic, Metal and Intermetallic Matrix Composites, Mat. Sci. Eng., A143, 63-76 (1991). 

Koch C. Intermetallic matrix composites prepared by mechanical alloying. A review. Mater. Sci. Eng. A 1998 224 39-48. 

K. Vedula Strength, Ductility and Toughness of Intermetallic Matrix Composites. In O. Izu-mi (ed.) Proc. Int. Symp. Intermetallic Compounds - Structure and Mechanical Properties (J IMIS-6). Tlie Japan Institute of Metals, Sendai (1991) 901-926. 

S. Mazdiyasni, D. B. Miracle Survey of Eutectic Systems as Potential Intermetallic Matrix Composites for High Temperature Application. In D. L. Anton, P. L. Martin, D. B. Miracle et al. Intermetallic Matrix Composites. MRS, Pittsburgh (1990) 155-162. 

Potential applications exist for metallic (MMCs) and intermetallic matrix composites (IMCs) in next generation aerospace propulsion systems for advanced commercial subsonic airaaft and high speed civil transport. These applications require stiff, strong and light materials that operate at higher temperatures with long lifetimes [48]. 

J. Doychak, Metal- and intermetallic- matrix composites for aerospace propulsion and power systems, J. of Metals, June Issue, 46-51 (1992). 

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