Microstructure and Mechanical Properties of Al2O3/NiAl In Situ Composites by Hot-Press-Aided Reaction Synthesis

Guo Quan Qi; Feng Shou Shangguan; Li Neng Yang; Qiang Bai; Gang Wu

doi:10.4028/www.scientific.net/AMR.581-582.548

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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 581-582Microstructure and Mechanical Properties of...

Microstructure and Mechanical Properties of Al₂O₃/NiAl In Situ Composites by Hot-Press-Aided Reaction Synthesis

Abstract:

Al₂O₃/NiAl composites were successfully fabricated by hot-press-assisted exothermic dispersion method with elemental powder mixtures of Ni, Al, NiO. The content of Al₂O₃ on the microstructures and mechanical properties of Al₂O₃/NiAl composites has been characterized. The results show that the Vickers hardness, flexural strength and fracture toughness of the composites increase with increasing Al₂O₃ content. When the Al₂O₃ content is 15 wt %, the flexural strength and the fracture toughness peaked at 765 MPa and 9.67 MPa•m ^1/2, respectively. The improvement of mechanical properties is associated with a more homogeneous and finer microstructure developed by addition of Al₂O₃.

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Periodical:

Advanced Materials Research (Volumes 581-582)

Pages:

548-551

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.581-582.548

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Online since:

October 2012

Authors:

Guo Quan Qi, Feng Shou Shangguan, Li Neng Yang, Qiang Bai, Gang Wu

Keywords:

Al₂O₃/NiAl Composites, In Situ Reaction, Mechanical Property, Microstructure

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References

[1] M. Yamaguchi, H. Inui, K. Ito, High-temperature structural intermetallics, Acta Mater. 48(2000)307-322.

DOI: 10.1016/s1359-6454(99)00301-8

Google Scholar

[2] A. Lasalmonie, Intermetallics: why is it so difficult to introduce them in gas turbine engines Intermetallics. 14(2006)1123-1129.

DOI: 10.1016/j.intermet.2006.01.064

Google Scholar

[3] D.C. Dunand, A. Mortensen, J.L. Sommer, Synthesis of bulk and reinforced nickel aluminides by reactive infiltration, Metallurgical and Materials Transactions. 24(1993) 2161-2170.

DOI: 10.1007/bf02648590

Google Scholar

[4] J.T. Guo, Y.H. Qi, G.S. Li, W.T. Wu, Tensile properties and microstructure of in situ NiAl–Cr (Zr) eutectic composite, Composite Structures. 64(2003) 323-327.

DOI: 10.1016/j.compstruct.2003.09.031

Google Scholar

[5] G. Sauthoff, Multiphase intermetallic alloys for structural applications, Intermetallics. 8(2000)1101-1109.

DOI: 10.1016/s0966-9795(00)00045-5

Google Scholar

[6] C.H.J. Henager, J.L. Brimhall, Solid State Displacement Reaction Synthesis of Interpenetrating- Phase Ni-Al/Al2O3 Composites, Scripta Metall. Mater. 29(1993) 1597-1602.

Google Scholar

[7] B.S.S. Daniel, V.S.R. Murthy, G.S. Murty, Metal-ceramic composites via in-situ methods, J. Mater. Pro. Tec. 68(1997) 132-155.

DOI: 10.1016/s0924-0136(96)00020-9

Google Scholar

[8] X. Zhu, T. Zhang, V. Morris, D. Marchant, Combustion synthesis of NiAl/Al2O3 composites by induction heating, Intermetallics. 18(2010) 1197-1204.

DOI: 10.1016/j.intermet.2010.03.009

Google Scholar

[9] V. Udhayabanu, K.R. Ravi, V. Vinod, B.S. Murty, Synthesis of in-situ NiAl-Al2O3 nanocomposite by reactive milling and subsequent heat treatment, Intermetallics. 16 (2010) 353–358.

DOI: 10.1016/j.intermet.2009.08.006

Google Scholar

[10] A.F. Whitehouse, T.W. Clyne, Effects of reinforcement content and shape on cavitation and failure in metal-matrix composites, Composite. 24(1993) 256-261.

DOI: 10.1016/0010-4361(93)90172-5

Google Scholar