A simple model for interfacial phase growth in metal matrix composites

The time dependence for a reinforcement-matrix interfacial layer (RMIL) growth in most metal matrix composites (MMCs) is often not t 1/2 ( t denoting time) as described by Fick's law. Moreover, the RMIL thickness ( h) versus t 1/2 could exhibit multiple-stage responses; more precisely, the enti...

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Bibliographic Details
Published in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2000-01, Vol.31 (7), p.727-731
Main Authors: Chen, J.K, Beraun, J.E
Format: Article
Language:English
Subjects:
A. Metal matrix composite
Applied sciences
Exact sciences and technology
Fibre reinforced metals
Interfacial phase growth
Metals. Metallurgy
Powder metallurgy. Composite materials
Production techniques
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Summary:The time dependence for a reinforcement-matrix interfacial layer (RMIL) growth in most metal matrix composites (MMCs) is often not t 1/2 ( t denoting time) as described by Fick's law. Moreover, the RMIL thickness ( h) versus t 1/2 could exhibit multiple-stage responses; more precisely, the entire growth is controlled by t m with variable m. In this paper, a diffusion model, which accounts species loss from chemical reactions, is proposed to characterize the RMIL growth. The resulting relationship between the thickness and time is very simple: h=a ln(bt+c). The three parameters all have a physical meaning and can be easily calibrated. The model is validated with the existing experimental results from seven different MMC systems.
ISSN:1359-835X
1878-5840
DOI:10.1016/S1359-835X(00)00035-X