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Effect of Carbon Addition on the Microstructure and Mechanical Properties of the In Situ Formed TiAl/Ti2AlC Composites

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Abstract:

TiAl/Ti2AlC composites were successfully fabricated by hot-press-assisted reactive synthesis method from elemental powder mixtures of Ti, Al and C. The effect of C addition on the microstructures and mechanical properties of TiAl/Ti2AlC composites was investigated in detail. The results show that the Rockwell hardness, flexural strength and fracture toughness of the composites are modified by incorporation of in situ formed Ti2AlC. When the C content was 0.44 wt %, the flexural strength and the fracture toughness reach the maximum values of 658.7 MPa and 10.03 MPa•m1/2, respectively. The reinforcing mechanism was also discussed.

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Periodical:

Advanced Materials Research (Volumes 217-218)

Pages:

680-683

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.217-218.680

Citation:

Cite this paper

Online since:

March 2011

Authors:

Jian Feng Zhu, Wen Wen Yang, Yi Ping Gong

Keywords:

In Situ Reaction, Mechanical Property, Microstructure, Ti2AlC, TiAl

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