Microstructure and Mechanical Properties of TiB2/Al Composites

Shuai Chen; Yu Tao Zhao; Hua Jin

doi:10.4028/www.scientific.net/AMR.399-401.2266

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 399-401Microstructure and Mechanical Properties of...

Microstructure and Mechanical Properties of TiB₂/Al Composites

Abstract:

Abstract:TiB₂/Al composites were prepared by the melt in situ reaction fabrication using Al-3B master alloy and Ti powder as the reactive materials. The phase composition and the microstructure of the as-prepared composites were investigated by XRD, SEM. The results indicate that the reinforcements are TiB2 and a small amount of Al₃Ti. TiB₂ particles are in the shape of irregular polygon or rectangle, and its size is 0.5-2μm. Compared with the matrix material, the ultimate tensile strength, microhardness of as-prapred composites increase by 51%, 68.8%, 85.2%, and 33.4%, 43.8%, 55%, respectively. However, the elongation decrease with the volume fraction of the reinforcements increased.

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Periodical:

Advanced Materials Research (Volumes 399-401)

Pages:

2266-2270

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.399-401.2266

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Online since:

November 2011

Authors:

Shuai Chen, Yu Tao Zhao, Hua Jin

Keywords:

Microhardness, Microstructure, TiB₂Particle, Ultimate Tensile Strength (UTS)

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