Evidence for stable stoichiometric Ti2C at the interface in TiC particulate reinforced Ti alloy composites

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DOIResolve DOI: http://doi.org/10.1016/S1359-6454(99)00453-X
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TypeArticle
Journal titleActa Materialia
Volume48
Issue7
Pages14431450; # of pages: 8
SubjectCarbides; Interfacial stability; Low energy electron microscopy; Neutron scattering; Titanium
AbstractTi-6%Al-4%V composites containing 20?vol.% TiC particles were sintered at temperatures between 1273 and 1773?K for holding times of up to 20?h. Neutron diffraction and low voltage field emission gun scanning electron microscopy were used to investigate the development of the interfacial reaction region between the reinforcement and matrix. It has been observed that there is an interaction zone surrounding each particle caused by the diffusion of carbon from the reinforcement to the titanium alloy matrix. The extent of this reaction increases with increasing processing temperature and holding time. The single phase formed at the interfacial boundary between the particles and the matrix was determined from lattice parameter measurements to be stoichiometric Ti2C. The significance of these findings are discussed in terms of previous work on interfacial characterization of TiC particulate reinforced Ti-6%Al-4%V composites.
Publication date
AffiliationNational Research Council Canada; NRC Canadian Neutron Beam Centre
Peer reviewedNo
NPARC number12338868
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Record identifiere48f0076-084c-4a8f-80be-5729763bf2cf
Record created2009-09-11
Record modified2016-05-09
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