Control of Interface Properties of Light Metal Composites through In-situ Metallurgical Processing

The properties of continuously reinforced aluminum composites have been notoriously unpredictable and prone to extreme scatter. Early results from MIT studies that preceded this study showed that matrix metallurgy was important in yet to be understood ways. As MMCC and MIT researchers working in col...

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Bibliographische Detailangaben
Hauptverfasser:	Cornie, James A, Seleznev, Maxim L, Zhang, Shi-yu, Ryals, Mark A
Format:	Report
Sprache:	eng
Schlagworte:	ALLOYS ALUMINUM COMPOSITE MATERIALS CONTINUITY CONTROL DELAMINATION EQUILIBRIUM(GENERAL) FIBERS Inorganic Chemistry INTERFACES Laminates and Composite Materials LIGHTWEIGHT MECHANICAL PROPERTIES METAL MATRIX COMPOSITES METALLURGY Metallurgy and Metallography Physical Chemistry PRECIPITATION PROCESSING REINFORCING MATERIALS SBIR SCATTERING SURFACE PROPERTIES TOUGHNESS
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Beschreibung
Zusammenfassung:	The properties of continuously reinforced aluminum composites have been notoriously unpredictable and prone to extreme scatter. Early results from MIT studies that preceded this study showed that matrix metallurgy was important in yet to be understood ways. As MMCC and MIT researchers working in collaboration investigated the phenomena, we discovered that controlled equilibrium precipitation on the fiber surface could be used to control interfacial delamination, long recognized as necessary for toughening of continuously reinforced metal matrix composites. This report summarizes our present understanding of this phenomena and points the way toward applying deep metallurgical understanding to the use of commercial alloys to optimize the mechanical behavior of continuously reinforced MMCs. jg p.9