Interfacial Phase Growth in Metal Matrix Composites
Abstract
The time dependence of a reinforcement-matrix interfacial layer growth (RMILG) in most metal matrix composites (MMCs) is not t1/2 as described by Fick’s diffusion law. Moreover, the RMILG versus t1/2 could be linear for relatively short and long times, and an anomalous transition behavior exhibits in between. In this paper a dual-phase-lag diffusion (DPLD) model, extending from Fick’s diffusion law, is proposed to characterize the RMILG kinetics. It accounts for two lagging times required for the interdiffusion process between dissimilar materials and the chemical reaction that forms an interfacial compound. This inclusion of the lagging times uniquely represents the four types of growth kinetics and can capture multiple-stage response over the entire RMILG history. Numerical results show that the DPLD modeling agrees very well with experimental data.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Nov 15, 1998
- Source ID
- 10.1115/imece1998-0694
Entities
People
- D. Y. Tzou
- J. E. Beraun
- J. K. Chen
Organizations
- Air Force Research Laboratory
- University of Missouri