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Ambient‐ and High‐Temperature Properties of Titanium Carbide–Titanium Boride Composites Fabricated by Transient Plastic Phase Processing
Author(s) -
Brodkin Dmitri,
Zavaliangos Antonios,
Kalidindi Surya R.,
Barsoum Michel W.
Publication year - 1999
Publication title -
journal of the american ceramic society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.9
H-Index - 196
eISSN - 1551-2916
pISSN - 0002-7820
DOI - 10.1111/j.1151-2916.1999.tb01815.x
Subject(s) - materials science , microstructure , composite material , thermal shock , boride , titanium , titanium carbide , phase (matter) , equiaxed crystals , toughness , carbide , boron carbide , metallurgy , chemistry , organic chemistry
Ambient‐ and high‐temperature properties of a class of titanium carbide‐titanium boride composites that have been produced by transient plastic phase processing are presented. The composites produced are comprised of Ti 3 B 4 , TiB 2 , and TiC 0.65 at their equilibrium composition (34.5, 30.5, and 34.9 vol%, respectively), and the Ti 3 B 4 phase in these composites occurs either as equiaxed grains or as platelets, depending on the starting mixture composition. Measurements of the ambient‐ and high‐temperature flexure strength and fracture toughness, thermal shock susceptibility, oxidation resistance, and wear resistance of this class of composites are presented. The role of various microstructural parameters—such as the morphology of the Ti 3 B 4 phase, the length scale of the microstructure, and the volume fraction of borides—on these properties has been identified.