EGIZABAL, Pedro; GARCÍA DE CORTÁZAR, Maider; DOUIN, Joël; TORREGARAY, Amaia; LAHAYE, Michel; VINCENT, Cécil; SILVAIN, Jean-François

doi:10.1002/adem.201000031

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EGIZABAL, Pedro
INASMET-Tecnalia (SPAIN)

GARCÍA DE CORTÁZAR, Maider
INASMET-Tecnalia (SPAIN)

DOUIN, Joël
Centre d'élaboration de matériaux et d'études structurales [CEMES]

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Advanced Engineering Materials. 2010-06, vol. 12, n° 6, p. 504-508

Wiley-VCH Verlag

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The paper describes the influence of 5 wt % titanium diboride (TiB2) particles on the microstructure of an Al-Cu alloy produced by plaster casting process. The elaboration route leads to a composite material with 1% of in situ TiB2 particles and 4% ex situ of TiB2 particles. The comparison of the reinforced alloy with the corresponding non-reinforced counterpart makes clear that the presence of TiB2 particles has a large influence in the observed microstructure. The presence of TiB2 particles decreases the grain sizes and the porosity level. It is also found that TiB2 particles play an important role in the precipitation events of Al2Cu precipitates that are formed during solidification at the TiB2/aluminum matrix interfaces.< Leer menos

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Interface

Scanning/transmission electron microscopy

Casting

Metal-matrix composites (MMCs)

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Microstructural analysis of the reinforced Al-Cu5mgti/Tib2 5 wt% Alloy for Investment casting applications

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