Affiliation:
1. Harbin Institute of Technology
Abstract
Two ZrB2-based composites were fabricated by hot-pressing with vacuum.
ZrB2+20vol%SiC and ZrB2+20vol%SiC+8vol%TiB2 were selected as the starting compositions. The microstructures and phase constitutions of the composites were investigated and compared to these of monolithic ZrB2 material. For the ZrB2-based composites, with the addition of SiC particles, the excessive growth of ZrB2 materials is restricted and grain structure is refined. Meanwhile the
fracture modes are changed, namely, from transgranular to mixed inter/transgranular. Strengthening mechanism is grain refining and the toughening mechanism is crack deflection, crack branching and grain refining. The role of TiB2 as an addition to the ZrB2 matrix was also examined and discussed.
Publisher
Trans Tech Publications, Ltd.
Subject
Mechanical Engineering,Mechanics of Materials,General Materials Science
Reference8 articles.
1. K. Upadhya, J. -M. Yang and W.P. Hoffman: American Ceramic Society Bulletin Vol. 76 (1997), p.51.
2. M. Gasch, D. Ellerby and E. Irby, S. Beckman, M. Gusman and S. Johnson: Journal of Materials Science Vol. 39 (2004), p.5925.
3. F. Monteverde, S. Guicciardi and A. Bellosi: Materials Science and Engineering Vol. 346 (2003), p.310.
4. F. Monteverde and A. Bellosi: Scripta Materialia Vol. 46(2002), p.223.
5. F. Monteverde and A. Bellosi: Journal of Materials Research Vol. 19 (2004), p.3576.
Cited by
8 articles.
订阅此论文施引文献
订阅此论文施引文献，注册后可以免费订阅5篇论文的施引文献，订阅后可以查看论文全部施引文献