Each claim states how it is known and cites its evidence.
EstablishedMost widely used and cheapest MMC route; aluminium and magnesium alloys.
Stir casting is described as the most widely used, least expensive and mass-producible route for metal-matrix composites, and is used for aluminium-matrix composites reinforced with silicon carbide, alumina, titania and graphite; liquid-state processing of this kind suits low-melting alloys such as aluminium and magnesium.
Evidence support: Supported by the cited evidence · 2 sources, multiple sources, independence unknown
Evidence: Pallab 2024 · Peer-reviewed; Bisma 2022 · Peer-reviewed
EstablishedHigher melt viscosity, segregation, poor wetting.
In stir casting the added reinforcement raises the viscosity of the melt in proportion to its amount, which makes mixing more difficult, and segregation can leave the cast product with an uneven microstructure; poor wetting of particles by the melt is countered by alloying additions and by preheating the reinforcement and the mould.
Evidence support: Supported by the cited evidence · one source
Evidence: Pallab 2024 · Peer-reviewed
EstablishedReinforcement stirred into molten metal, then cast.
In stir casting, also called vortex or slurry casting, reinforcement particles or short fibres are blended into molten metal through a stirred vortex, and the mixture is then poured into a die or left to solidify in the crucible.
Evidence support: Supported by the cited evidence · 2 sources, multiple sources, independence unknown
Evidence: Pallab 2024 · Peer-reviewed; Bisma 2022 · Peer-reviewed