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Fracture Toughness and Microstructure of Nial-Based Composite with TiC Reinforcement

  • Z. P. Xing (a1) (a2), J. T. Guo (a1), J. Y. Dai (a1), L. G. Yu (a1), Z. Q. Hu (a1), G. Y. An (a2) and Q. Y. Chen (a1)...

Abstract

Fracture toughness of NiAl–based composite reinforced by TiC particulate was measured using single–edge notched three–point bend specimens. The composite was fabricated by HPES (hot pressing aided exothermic synthesis) technique. It is shown that the ambient toughness of stoichiometric NiAl was increased from 5.9 MPa m1/2 to 8.9 MPa m1/2 by incorporating 20 vol.% TiC particulates. From fracture surface analysis along with the high–resolution electron microscopy (HREM) observation, toughening mechanisms of the NiAl–TiC composite were also discussed.

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Fracture Toughness and Microstructure of Nial-Based Composite with TiC Reinforcement

  • Z. P. Xing (a1) (a2), J. T. Guo (a1), J. Y. Dai (a1), L. G. Yu (a1), Z. Q. Hu (a1), G. Y. An (a2) and Q. Y. Chen (a1)...

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