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Microstructural Analysis of the Reinforced Al‐Cu5mgti/Tib 2 5 wt % Alloy for Investment Casting Applications
Author(s) -
Egizabal Pedro,
García de Cortazar Maider,
Douin Joël,
Torregaray Amaia,
Lahaye Michel,
Vincent Cécil,
Silvain JeanFrangois
Publication year - 2010
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201000031
Subject(s) - materials science , microstructure , alloy , titanium diboride , metallurgy , investment casting , casting , precipitation , aluminium , porosity , titanium , composite material , ceramic , mold , physics , meteorology
The paper describes the influence of 5 wt % titanium diboride (TiB 2 ) 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 TiB 2 particles and 4% ex situ of TiB 2 particles. The comparison of the reinforced alloy with the corresponding non‐reinforced counterpart makes clear that the presence of TiB 2 particles has a large influence in the observed microstructure. The presence of TiB 2 particles decreases the grain sizes and the porosity level. It is also found that TiB 2 particles play an important role in the precipitation events of Al 2 Cu precipitates that are formed during solidification at the TiB 2 /aluminum matrix interfaces.