Journal of Materials Science

, Volume 43, Issue 19, pp 6513–6526 | Cite as

Combustion synthesis/quasi-isostatic pressing of TiC–NiTi cermets: processing and mechanical response

  • E. R. Strutt
  • E. A. Olevsky
  • M. A. MeyersEmail author


TiC–NiTi composites were produced by a technique combining self-propagating high-temperature synthesis (SHS) of elemental powders of Ni, Ti, and C with densification by quasi-isostatic pressing (QIP). In order to create a one-step synthesis/densification process, the Ti + Ni + C reactant material was surrounded in a bed of graphite and alumina particulate before initiation of the combustion reaction. The sample was ignited within the particulate and subjected to a uniaxial load immediately after passage of the combustion wave. The constitutive response, composition and resulting structures of the composites with varying volume fractions of NiTi are characterized. Powder mixtures prepared anticipating the formation of stoichiometric TiC result in the formation of composites with a eutectic matrix of Ni3Ti and NiTi. This titanium impoverishment of the matrix is consistent with the formation of nonstoichiometric TiCx during the combustion reaction. The Ni3Ti phase can be suppressed by anticipating the formation of TiC0.7 and adjusting the chemical content of the reactant mixture to include additional titanium. These cermets combine the high hardness of the ceramic phase with the possible shape memory and superelastic effects of NiTi.


Titanium Carbide Combustion Wave Ni3Ti Ni3Ti Phase NiTi Matrix 



This research was supported by the U.S. Army Research Office MURI Program on Ultradynamic Performance Materials under contracts DAAH04-95-1-0236 and DAAH04-96-1-0376. The help and guidance provided by Dr. J. C. LaSalvia is greatly acknowledged. The TEM was performed in collaboration with Dr. T. Radetic at the National Center for Electron Microscopy, Lawrence Berkeley National Laboratory, University of California, Berkeley, CA 94720. Mr. Y. Seki provided the great help with the preparation of the manuscript. We thank the National Center for Electron Microscopy, Lawrence Berkeley Laboratory, for the use of their facilities.


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Copyright information

© Springer Science+Business Media, LLC 2008

Authors and Affiliations

  1. 1.Materials Science and Engineering ProgramUniversity of CaliforniaSan Diego, La JollaUSA
  2. 2.Department of Mechanical EngineeringSan Diego State UniversitySan DiegoUSA
  3. 3.Departments of Mechanical and Aerospace Engineering and NanoengineeringUniversity of CaliforniaSan Diego, La JollaUSA

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