Development of Intelligent Processing Methodology for Intermetallic Matrix Composites
Abstract
The project aims at development of processing technologies for a broad, new family of in-situ metal matrix composites based upon the innovative use of multi-lithic reinforcement strategies. Intermetallic matrix composites (IMCs), reinforced with a dispersed ceramic phase, will be incorporated into metallic matrices to serve as reinforcing entities within the resulting multi-lithic reinforced composite (MRC). IMC-reinforcement in metallic matrices is particularly novel since they can be created to possess low temperature strengths normally unique to structural ceramics, and retain a metallic-like ability to be deformed at high temperatures. When combined with creative processing methodologies, such composites will offer an unprecedented degree of microstructural and property design capability. When specifically applied to light-metal matrices, the composites will possess the normally elusive combination of high specific strength, thermomechanical stability, economy of processing, and increased use-temperature capability. While the concept of an IMC-reinforced metal matrix composite can be broadly extended to a wide range of conceivable processing methodologies and composite geometries, deformation processing techniques has been selected for this effort as the approach whereby the best properties of both the IMC and matrix components can be most efficiently and synergistically applied. For example, through the imposition of high temperature, powder-based extrusion, an aligned MRC can be created if the metal matrix and the IMC-reinforcement deform commensurably. The specific objectives of this study are to: Identify most significant MRC material system(s) for advanced navy propulsion systems.
Document Details
- Document Type
- Technical Report
- Publication Date
- Nov 04, 1997
- Accession Number
- ADA331470