Abstract
A suitable combustion synthesis and densification process was designed to fabricate dense NiAl/TiB2 composites from Ni−Al−Ti−B system. Combustion synthesis processing and microstructure characteristics of products were studied in detail. The results show that the amount of TiB2 ceramics has a great influence on the combustion synthesis processing and microstructure; with the increase of the amount of TiB2 ceramics, the combustion temperature and combustion velocity increase rapidly. The volume of synthesized products and the grain size of ceramics particle size are also affected by the amount of TiB2 ceramics. TiB2 ceramics fiber can be produced in this synthesis system. The dense NiAl/TiB2 composites with residual porosity of no more than 1% are fabricated by the combustion synthesis and hot pressing, the mechanical properties of the dense NiAl/TiB2 composites increase with increase of the amount of TiB2 ceramics.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Lee In-Gyu Ghosh Amit K, Ray Ranjan, Jha Sunil. High-temperature Deformation of B2 NiAl-base alloys.Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 1995, 26A(3): 615
Bowman R R, Misra A K, Amold S M. Processing and Mechanical Properties of Al2O3 Fiber-reinforced NiAl Composites.Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 1994, 25A(9): 2017
Cheng Tianyl. Microstructures and Metastable Phases Produced in Cold Sintered Blocks by Mechanical Alloying of NiAl−TiB2.Journal of Materials Science, 1996, 31 (16): 4433
**ng Z P, Guo J T, Han Y F, Yu L G. Grain Growth in NiAl−Al2O3 in situ Composites.Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science, 1997, 28A (4): 1079
Benchu Mei and Runzhang Yuan. Investigation on Ni3Al Matrix Ccomposites Strengthened by TiC.Journal of Materials Research, 1993, 8(11): 2830
Z A Muzir. Synthesis of High Temperature Mateerials by Selfpropagating Combustion Methods.Am. Ceram. Sco. Bull., 1988, 67(2): 342
A G Merzhanov. Worldwide Evolution and Present Status of SHS as a Branch of Modern R&D.Inter. J. SHS, 1997, 6(2): 119
A G Merzhanov. Ten Research Direction in the Future of SHS,Inter. J. SHS, 1995, 4(4): 323
Z A Muzir. Reaction Synthesis Process: Mechanisms and Characteristics.Metall. Trans. A, 1992, 23(A): 7
Author information
Authors and Affiliations
Additional information
WANG Wei-min: Born in 1966
Funded by the State “863 plan” (No. 2001AA333020)
Rights and permissions
About this article
Cite this article
Wei-min, W., Zheng-yi, F., Hao, W. et al. Combustion synthesis and densification of NiAl/TiB2 Composites. J. Wuhan Univ. Technol.-Mat. Sci. Edit. 17, 4–9 (2002). https://doi.org/10.1007/BF02852623
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02852623