Solid–liquid reaction synthesis and simultaneous densification of polycrystalline Ti2AlC
-
Xiaohui Wang
Abstract
A novel solid – liquid reaction synthesis and simultaneous densification process was developed to fabricate Ti2AlC material using the stoichiometric mixture of Ti, Al and graphite powders as starting materials. This method is a one-step process for the preparation of dense poycrystalline Ti2AlC. Moreover, it provides the advantages of low synthesis temperature, short reaction time and simultaneous synthesis and densification. The microstructure evolution during the high temperature processing was described and the properties of polycrystalline Ti2AlC prepared by this method at 1400 °C were investigated. The results showed that Ti2AlC exhibited metallic electrical conductivity and high mechanical properties. The electrical conductivity of Ti2AlC at room temperature was 4.42⨯106 Ω– 1 ⨯ m– 1 and increased with decreasing temperature. The Vickers hardness of Ti2AlC was 2.8 GPa. No indentation cracks were observed and the microdamage is confined in the immediate vicinity of the indent indicating that Ti2AlC is damage tolerant. The flexural strength and the fracture toughness were 275 MPa and 6.5 MPa ⨯ m1/2, respectively.
-
This work was supported by the National Outstanding Young Scientist Foundation under Grant No. 59925208, the National Science Foundation of China (NSFC) under Grant No. 59772021, 50072034 and ‘863’ program.
References
1 Pietzka, M.A.; Schuster, J.C.: J. Phase Equilibria 15 (1994) 392.10.1007/BF02647559Search in Google Scholar
2 Zhou, Y.C.; Sun, Z.M.: Phys. Rev. B 61(2000) 12570.10.1103/PhysRevB.61.12570Search in Google Scholar
3 Jeitschko, W.; Nowotny, H.; Benesovky, F.: Monatsh. Chem. 94 (1963) 672.10.1007/BF00913068Search in Google Scholar
4 Ivchenko, V.I.; Lesnaya, M.I.; Nemchenko, V.F.; Kosolapova, T.Ya.: Poroshk. Metall.5 (1976) 45.Search in Google Scholar
5 Barsoum, M.W.; Ali, M.; El-Raghy, T.: Metall. Mater. Trans. A 31 (2000) 1857.10.1007/s11661-006-0243-3Search in Google Scholar
6 Barsoum, M.W.; Brodkin, D.; Elraghy, T.: Scripta Mater. 36 (1997) 535.10.1016/S1359-6462(96)00418-6Search in Google Scholar
7 Zhou, Y.C.; Sun, Z.M.; Chen, S.Q.; Zhang, Y.; Mater. Res. Innovat. 2 (1998) 142.10.1007/s100190050076Search in Google Scholar
8 Li, J.F.; Sata, F.;Watanabe, R.: J. Mater. Sci. Lett. 18 (1999) 1595.10.1023/A:1006664416845Search in Google Scholar
9 Zhou, Y.C.; Sun, Z.M.: Mater. Res. Innovat. 2 (1999) 360.10.1007/s100190050114Search in Google Scholar
10 Lis, J.; Miyamoto, Y.; Pampuch, R.; Tanihata, K.: Mater. Lett. 22 (1995) 163.10.1016/0167-577X(94)00246-0Search in Google Scholar
11 El-Raghy, T.; Zavaliangos, A.; Barsoum, M.; Kalidindi, S.: J. Am. Ceram. Soc. 80 (1997) 513.10.1111/j.1151-2916.1997.tb02861.xSearch in Google Scholar
12 Low, I. M.: J. Europ. Ceram. Soc. 18 (1998) 709.10.1016/S0955-2219(97)00201-XSearch in Google Scholar
13 Gao, N.F.; Miyamoto, Y.; Zhang, D.: J. Mater. Sci. 34 (1999) 4385.10.1023/A:1004664500254Search in Google Scholar
14 Barsoum, M.W.; El-Raghy, T.: J. Am. Ceram. Soc. 79 (1996) 1953.10.1111/j.1151-2916.1996.tb08018.xSearch in Google Scholar
© 2002 Carl Hanser Verlag, München
Articles in the same Issue
- Frontmatter
- Editorial
- Editorial
- Aufsätze/Articles
- Microstructure and texture of ausformed NiTi
- Anisotropic high cycle fatigue behaviour of duplex stainless steels: influence of microstresses
- Liquid and solid inclusions at advancing steel solidification fronts
- Structural differences between the nanocrystalline soft magnetic Fe73.5Si13.5B9Nb3Cu1 and Fe86Zr7B6Cu1 alloys
- The dependence of hot deformation-recrystallisation properties of Al-6063 (Etial-60) alloy on homogenisation practice
- Relaxation of residual stress in AISI 347 welded pipe: a time-of-flight neutron diffraction study
- Excellent plasticity revealed in high purity Si steels by the addition of Cr
- Phase formation and reaction kinetics in the vanadium– tin system
- Microstructure and mechanical properties of Cu–Ag microcomposites for conductor wires in pulsed high-field magnets
- Solid–liquid reaction synthesis and simultaneous densification of polycrystalline Ti2AlC
- Dislocation glide on non-compact crystal planes in copper
- Residual stresses in Cu–Fe –TiC sintered materials after grinding and after shot peening
- Mitteilungen/Notifications
- Instructions to authors
- Richtlinien für autoren
- Personen
- Bücher/Books
- Tagungen/Conferences
- Corrigendum
- Corrigendum
Articles in the same Issue
- Frontmatter
- Editorial
- Editorial
- Aufsätze/Articles
- Microstructure and texture of ausformed NiTi
- Anisotropic high cycle fatigue behaviour of duplex stainless steels: influence of microstresses
- Liquid and solid inclusions at advancing steel solidification fronts
- Structural differences between the nanocrystalline soft magnetic Fe73.5Si13.5B9Nb3Cu1 and Fe86Zr7B6Cu1 alloys
- The dependence of hot deformation-recrystallisation properties of Al-6063 (Etial-60) alloy on homogenisation practice
- Relaxation of residual stress in AISI 347 welded pipe: a time-of-flight neutron diffraction study
- Excellent plasticity revealed in high purity Si steels by the addition of Cr
- Phase formation and reaction kinetics in the vanadium– tin system
- Microstructure and mechanical properties of Cu–Ag microcomposites for conductor wires in pulsed high-field magnets
- Solid–liquid reaction synthesis and simultaneous densification of polycrystalline Ti2AlC
- Dislocation glide on non-compact crystal planes in copper
- Residual stresses in Cu–Fe –TiC sintered materials after grinding and after shot peening
- Mitteilungen/Notifications
- Instructions to authors
- Richtlinien für autoren
- Personen
- Bücher/Books
- Tagungen/Conferences
- Corrigendum
- Corrigendum
