MICROSTRUCTURE AND DEFORMATION OF TIB+TI2C REINFORCED TITANIUM MATRIXCOMPOSITES

Citation
S. Ranganath et al., MICROSTRUCTURE AND DEFORMATION OF TIB+TI2C REINFORCED TITANIUM MATRIXCOMPOSITES, Materials science and technology, 12(3), 1996, pp. 219-226
Citations number
34
Categorie Soggetti
Metallurgy & Metallurigical Engineering","Material Science
ISSN journal
02670836
Volume
12
Issue
3
Year of publication
1996
Pages
219 - 226
Database
ISI
SICI code
0267-0836(1996)12:3<219:MADOTR>2.0.ZU;2-I
Abstract
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.