Microstructures and Mechanical Properties of B4C-TiB2 Composite Prepared by Hot Pressure Sintering

Abstract:

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B4C-TiB2 composite was prepared using hot pressure sintering. The microstructures and mechanical properties of the B4C-TiB2 composite were investigated. The B4C-TiB2 composite with 43 mass % TiB2 showed the optimized properties. The relative density, hardness, flexural strength and fracture toughness of that were 98.2 %, 25.9 GPa, 458 MPa and 8.7 MPa•m1/2, respectively. A number of toughening mechanisms, including fine grain, crack deflection and grain pull-out, were observed during microstructural analysis of the composite. The fracture mode of the B4C-TiB2 composite was greatly affected by the existence of the second phase of TiB2.

Info:

Periodical:

Key Engineering Materials (Volumes 434-435)

Edited by:

Wei Pan and Jianghong Gong

Pages:

50-53

DOI:

10.4028/www.scientific.net/KEM.434-435.50

Citation:

X. Y. Yue et al., "Microstructures and Mechanical Properties of B4C-TiB2 Composite Prepared by Hot Pressure Sintering ", Key Engineering Materials, Vols. 434-435, pp. 50-53, 2010

Online since:

March 2010

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Price:

$35.00

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