Fabrication of TiAl/B4C Composites from an Al-Ti-B4C System Reinforced by TiC, TiB2 In Situ

Li Hua Dong; Wei Ke Zhang; Jian Li; Yan Sheng Yin

doi:10.4028/www.scientific.net/AMR.79-82.477

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 79-82Fabrication of TiAl/B4C Composites from an...

Fabrication of TiAl/B₄C Composites from an Al-Ti-B₄C System Reinforced by TiC, TiB₂ In Situ

Abstract:

Near full dense B4C ceramic matrix composites were fabricated from Ti-Al-B4C system by combining high energy milling with hot pressing sintering. The effect of different content of Ti-Al on the mechanical properties and microstructure of the as-prepared composites was investigated. A TiAl/B4C composite, whose typical bending strength and fracture toughness are 437.3 MPa and 4.85 MPa•m1/2, respectively, was made. The sintering mechanism and reinforcement mechanism were discussed with the assistant of X-Ray diffraction and electron microscopy.

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Periodical:

Advanced Materials Research (Volumes 79-82)

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477-480

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.79-82.477

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Online since:

August 2009

Authors:

Li Hua Dong, Wei Ke Zhang, Jian Li, Yan Sheng Yin

Keywords:

Boron Carbide, Reactive Hot Pressed Sintering, TiAl

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