In-situ TiAl-based matrix composites reinforced with ceramic particles can improve the deficiency of lightweight TiAl-based alloys at high temperatures and facilitate their industrial applications using well-known and widely applied processing technologies. Carbide particles show a significant role in toughening and reinforcing of TiAl-based matrix composites. Among various techniques applied for processing of in-situ composites, precise casting is of large industrial interest for the production of complex shaped components such as turbocharger wheels or turbine blades. This paper reviews developments in cast in-situ TiAl-based matrix composites reinforced with carbide particles concentrating on the last four years and drawing examples from the three most widely researched systems with near (TiAl), duplex and fully lamellar α2(Ti3Al) + (TiAl) matrices. The effect of processing techniques on microstructure and high temperature mechanical properties of designed composite systems is presented and discussed.Keywords: TiAl, composites, casting; mechanical properties, microstructure
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