Light alloy composite production by liquid metal infiltration

Liquid metal infiltration of a ceramic fibre preform offers a cost-effective net-shape production route for the preparation of light alloy composite materials. However, incomplete infiltration and shrinkage on solidification can produce serious defects, degrading the mechanical properties of the cas...

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Bibliographic Details
Published in:Composites 1994-05, Vol.25 (5), p.380-392
Main Authors: Zhang, Z., Long, S., Flower, H.M.
Format: Article
Language:English
Subjects:
Applied sciences
casting facility
Exact sciences and technology
Fibre reinforced metals
liquid metal infiltration
melt flow behaviour
metal-matrix composites
Metals. Metallurgy
modelling
non-infiltration defects
Powder metallurgy. Composite materials
Production techniques
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Summary:Liquid metal infiltration of a ceramic fibre preform offers a cost-effective net-shape production route for the preparation of light alloy composite materials. However, incomplete infiltration and shrinkage on solidification can produce serious defects, degrading the mechanical properties of the cast component. Additionally, chemical interactions between the liquid metal and the ceramic can alter the matrix alloy chemistry and microstructure, and produce poor metal/ceramic interface structures. Understanding the infiltration process, the heat and mass flow and chemical interactions, as functions of process conditions, is essential to the production of composites with low defect densities and minimized chemical interactions. A specially designed, highly instrumented casting facility has been constructed to carry out quantitative studies of liquid metal infiltration of ceramic preforms. The facility is described and its application to the study of composite casting is discussed.
ISSN:0010-4361
1878-7134
DOI:10.1016/S0010-4361(94)80008-1