Effect of Ceramic Content on the Compression Properties of TiB2-Ti2AlC/TiAl Composites

Metals

Shili Shu¹  Cunzhu Tong²  Feng Qiu¹  Qichuan Jiang¹ 

[1] Key Laboratory of Automobile Materials (Ministry of Education), Department of Materials Science and Engineering, Jilin University, Changchun 130025, China; E-Mail:;State Key Laboratory of Luminescence and Applications, Changchun Institute of Optics, Fine Mechanics and Physics, Chinese Academy of Sciences, Changchun 130012, China; E-Mail:

关键词: TiAl;    intermetallics;    composite;    compression properties;   

DOI  :  10.3390/met5042200

来源: mdpi

【 摘 要 】

In situ synthesized TiB₂-reinforced TiAl composites usually possess high strength. However, it is very expensive to use B powder to synthesize TiB₂ particles. Moreover, the strength enhancement of TiB₂/TiAl composite is generally at the cost of plasticity. In this study, in situ dual reinforcement TiB₂-Ti₂AlC/TiAl composites were fabricated by using B₄C powder as the B and C source, which greatly reduces the potential production cost. The 6 vol. % TiB₂-Ti₂AlC/TiAl composite fabricated by using the Ti-Al-B₄C system shows greatly improved compressive properties, i.e., 316 MPa and 234 MPa higher than those of TiAl alloy and with no sacrifice in plasticity.

【 授权许可】

CC BY   
© 2015 by the authors; licensee MDPI, Basel, Switzerland.