Abstract
Ti-6Al-4V-2Ni is being considered as a composite matrix material because of its potential for a lower consolidation temperature and reduced reaction product formation compared with conventional Ti-6A1-4V. Stress/strain-rate measurements of Ti-6Al-4V-2Ni in sheet form provided data for calculation of diffusion bonding parameters required for efficient consolidation. These data were used as consolidation parameters for fabrication of SiC (SCS-6) reinforced Ti-6Al-4V-2Ni. The composite with 10.5 vol pct SiC exhibits room temperature tensile strength approximately 80 pct of that observed for conventional Ti-6Al-4V/SiC having 35 to 40 vol pct SiC. Scanning and transmission electron microscopy revealed that the fiber-matrix reaction zone is roughly one-half the thickness of that found in SiC-reinforced Ti -6A1-4V, and that it consists of TiC and Ti5Si3. Nickel does not enter into the reaction zone products, but rather promotes the formation of Ti2Ni in the matrix.
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Rhodes, C.G., Ghosh, A.K. & Spurling, R.A. Ti-6Al-4V-2Ni as a matrix material for a SiC-reinforced composite. Metall Trans A 18, 2151–2156 (1987). https://doi.org/10.1007/BF02647087
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DOI: https://doi.org/10.1007/BF02647087