High-Temperature Metal Matrix Composites
S. T. Mileiko
Institute of Solid State Physics, Russian Academy of Sciences, Chernogolovka, 142432 Russia
Keywords: metal matrix composites, creep, creep-rupture strength, high-temperature strength, fracture toughness, heat resistance, oxide fiber, nickel superalloys, molybdenum
Abstract
This paper presents an overview of studies of creep–one of the most important characteristics of high-temperature materials. A structural model of creep and methods of accelerated creep tests are considered, and the effect of structural parameters on the creep resistance is studied. The problem of fracture toughness of metal matrix composites is analyzed. The possibility of designing composites with the necessary balance of high-temperature strength, fracture toughness, and oxidation resistance (heat resistance), in particular, composites operated at temperatures of 1400–1600 °C is demonstrated by the example of a molybdenum oxide composite.
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