Journal Published Online: 01 July 1994
Volume 16, Issue 3

Unidirectional Tensile Stress-Strain Response of BP-SiC Fiber Reinforced Ti-6Al-4V



The BP C/TiB2 coated SiC fiber reinforced Ti-6Al-4V composite has been studied experimentally and analytically. A good understanding of the material's room temperature mechanical properties has been achieved. The tests include longitudinal tension and transverse tension with both monotonic loading and cyclic loading cases. Micromechanical models have also been developed and give good correlation with test results for longitudinal and transverse tension. Loading-unloading-reloading tests enabled the interfacial strength to be determined. The transverse cyclic loading case was modeled and the friction coefficient at the failed interface was evaluated. In addition, the effect of the C/TiB2 coating on the transverse tensile properties was studied. The low stiffness carbon with anisotropic thermal properties reduced the interfacial radial residual stresses, and therefore decreased the composite stress at interfacial debonding. The composite transverse modulus was also reduced by the coating. Possible ways of improving the material properties are considered.

Author Information

Li, DS
University of Bristol, Bristol, U.K.
Wisnom, MR
University of Bristol, Bristol, U.K.
Pages: 9
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Stock #: CTR10411J
ISSN: 0884-6804
DOI: 10.1520/CTR10411J