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Microstructure and Tensile Properties of In Situ Synthesized (TiB+TiC)/Ti-6Al-4V Composites

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Abstract:

In this paper, Ti-6Al-4V matrix composites reinforced with 5% or 10% TiB and TiC were in situ synthesized by common casting and hot-forging technology utilizing the reaction between titanium and B4C. The phase constituents were identified by XRD while transus temperatures were determined by DSC and metallography. The evolution of microstructures was studied by optical microscopy. The effects of reinforcements on the microstructures, tensile properties and fractures at room temperature were discussed. The results show that yield strength and ultimate tensile strength increased significantly while ductility decreased with reinforcements increasing. Fracture type turned to brittle when reinforcements increased.

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Periodical:

Key Engineering Materials (Volume 351)

Pages:

201-207

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.351.201

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Online since:

October 2007

Authors:

Jun Qiang Lu, Wei Jie Lu, Yang Liu, Ji Ning Qin, Di Zhang

Keywords:

In Situ Synthesis, Mechanical Property, Microstructure, Ti Matrix Composite, TiB, TiC

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© 2007 Trans Tech Publications Ltd. All Rights Reserved

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