S. Ranganath et al., MICROSTRUCTURE AND DEFORMATION OF TIB+TI2C REINFORCED TITANIUM MATRIXCOMPOSITES, Materials science and technology, 12(3), 1996, pp. 219-226
A novel technique known as combustion assisted synthesis was utilised
for the fabrication of titanium carbide + titanium boride reinforced t
itanium matrix composites. This technique resulted in a homogeneous di
stribution of rodlike (TiB) and equiaxed (Ti2C) reinforcements in a fi
ne grained (1-2 mu m) titanium matrix, with a clean matrix/particle in
terface. The deformation behaviour of the composites and the control s
ample of titanium were studied in the temperature range 298-873 K and
strain rate range 2 x 10(-5)-2 x 10(-2) s(-1). Tests indicated that th
e composites were more deformable in compression and the values of yie
ld strength of the composites increased with volume fraction of reinfo
rcements, being approximately x 3-5 that of he control titanium. Fract
ographic analysis indicated that the composites failed in tension due
to particle cracking, whereas the failure mode of the control titanium
was dimpled fracture.