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High Temperature Mechanical Behavior of SiCf/Ti–Al Composites

Published online by Cambridge University Press:  01 January 1992

H.Y. Chou
Affiliation:
Materials R&D Center, CSIST, P.O. Box 90008–8, Lungtan, Taiwan, R.O.C.
S.C. Yang
Affiliation:
Materials R&D Center, CSIST, P.O. Box 90008–8, Lungtan, Taiwan, R.O.C.
K.L. Wang
Affiliation:
Materials R&D Center, CSIST, P.O. Box 90008–8, Lungtan, Taiwan, R.O.C.
C.I. Chen
Affiliation:
Materials R&D Center, CSIST, P.O. Box 90008–8, Lungtan, Taiwan, R.O.C.
S.E. Hsu
Affiliation:
Materials R&D Center, CSIST, P.O. Box 90008–8, Lungtan, Taiwan, R.O.C.
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Abstract

Titanium aluminide was reinforced by AVCO SCS–6 continuous SiC fibers in unidirectional or 0°/+45°/–45° direction to make SiCf/Ti–A1 composites through hot-pressing of Ti and A1 powder mixture. The toughness of the composites is greatly improved at room temperature. The typical tensile elongation is over 0.8%. The room temperature strength of the composite can be sustained up to about 700°C. The processes developed in this study have two merits: (1) Ti and A1 powders instead of Ti–A1 powder can be directly used as raw materials, and (2) the mechanical properties of composites can be tailored in a similar fashion as those of conventional composites.

Type
Research Article
Copyright
Copyright © Materials Research Society 1995

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