There is a need for an aluminum-based material to replace titanium in high temperature aerospace applications. A powder metallurgy (P/M) composite system of Al-9Ti reinfored with silicon carbide whiskers and particles was developed for this purpose. Microstructural and mechanical property evaluations of this system were performed to determine high temperature viability. Elevated temperature tensile tests demonstrated strengths of better than 120 MPa at 500 Cel. Processing defects contributed significantly to failure at low temperatures; and these defects coarsened with prolonged high temperature exposure. Subsequent analysis has centered on relating the growth of the defects to the observed mechanical properties.
Microstructural and mechanical property characterization of high temperature Al-9Ti alloy SiC composites
Charakterisierung der Mikrostruktur und mechanischer Eigenschaften des hochtemperaturbeständigen Verbundwerkstoffs aus Al-9Ti-Legierung und SiC
1991
19 Seiten, 11 Bilder, 12 Quellen
Conference paper
English
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