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Distinctive characteristics of solid-state reactions in mechanically alloyed Ti–Al–Si–C powder mixtures

Published online by Cambridge University Press:  03 March 2011

J.B. Zhou  and
K.P. Rao
J.B. Zhou
Affiliation:
Department of Manufacturing Engineering & Engineering Management,City University of Hong Kong, Kowloon, Hong Kong
K.P. Rao*
Affiliation:
Department of Manufacturing Engineering & Engineering Management,City University of Hong Kong, Kowloon, Hong Kong
*
a) Address all correspondence to this author. e-mail: mekprao@cityu.edu.hk
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Abstract

Ti–Al–Si–C powder mixtures of two different compositions, namely, 58Ti–30Al–6Si–6C (at.%) and 50Ti–15Al–20Si–15C (at.%), were mechanically alloyed to investigate the solid-state reactions during such a process. The mechanically alloyed powders were characterized as a function of milling time by x-ray diffraction (XRD), scanning electron microscopy, energy-dispersive spectrometry, and transmission electron microscopy (TEM). XRD results showed that solid solutions of Ti were formed for a powder mixture of 58Ti–30Al–6Si–6C in about 20 h of milling, whereas Ti5(Al,Si)3 and Ti(Al,Si)C compounds started to form in the powder mixture of 50Ti–15Al–20Si–15C within just 5 h of milling. TEM observations demonstrated that the particle sizes were of nano and submicron scale in both cases. This investigation indicated that in mechanically alloyed Ti–Al–Si–C powder mixtures, the main solid-state reactions are due to interdiffusion and mechanically induced self-propagating reaction.

Keywords

Mechanical alloyingPowder metallurgyStability
Type
Articles
Information
Journal of Materials Research , Volume 20 , Issue 2 , February 2005 , pp. 375 - 385
Copyright
Copyright © Materials Research Society 2005

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References

REFERENCES

1.Koch, C.C.: Intermetallic matrix composites prepared by mechanical alloying—A review. Mater. Sci. Eng. A 244, 39 (1998).CrossRefGoogle Scholar
2.Senkov, O.N., Cavusoglu, M. and Froes, F.H.: Synthesis and characterization of a TiAl/Ti5Si3 composite with a submicrocrystalline structure. Mater. Sci. Eng. A 300, 85 (2001).Google Scholar
3.Bohn, R., Fanta, G., Klassen, T. and Bormann, R.: Submicron-grained multiphase TiAlSi alloys: Processing, characterization, and microstructural design. J. Mater. Res. 16, 1850 (2001).CrossRefGoogle Scholar
4.Zhang, G., Blenkinsop, P.A. and Wise, M.L.H.: Phase transformations in HIPped Ti–48Al–2Mn-2Nb powder during heat-treatments. Intermetallics 4, 447 (1996).Google Scholar
5.Gouma, P.I., Davey, S.J. and Loretto, M.H.: Microstructure and mechanical properties of a TiAl-based powder alloy containing carbon. Mater. Sci. Eng. A 241, 151 (1998).Google Scholar
6.Ramaseshan, R., Kakitsuji, A., Seshadri, S.K., Nair, N.G., Mabuchi, H., Tsuda, H., Matsui, T. and Morii, K.: Microstructure and some properties of TiAl–Ti2AlC composites produced by reactive processing. Intermetallics 7, 571 (1999).Google Scholar
7.Park, H.S., Huang, S.K., Lee, C.M., Yoo, Y.C., Nam, S.W. and Kim, N.J.: Microstructural refinement and mechanical properties improvement of elemental powder metallurgy processed Ti-46.6AI-1.4Mn-2Mo alloy by carbon addition. Metall. Mater. Trans. A 32, 251 (2001).CrossRefGoogle Scholar
8.Patankar, S.N., Xiao, S.Q., Lewandowski, J.J. and Heuer, A.H.: Mechanism of mechanical alloying of MoSi2. J. Mater. Res. 8, 1311 (1993).Google Scholar
9.Gaffet, E. and Malhouroux-Gaffet, N.: Nanocrystalline MoSi2 phase formation induced by mechanically activated annealing. J. Alloys Compd. 205, 27 (1994).Google Scholar
10.Liu, L., Padella, F., Guo, W. and Magini, M.: Solid state reactions induced by mechanical alloying in metal–silicon (metal = Mo, Nb) systems. Acta Metall. Mater. 43, 3755 (1995).Google Scholar
11.Froes, F.H., Senkov, O.N. and Baburaj, E.G.: Synthesis of nanocrystalline materials — An overview. Mater. Sci. Eng. A 301, 44 (2001).Google Scholar
12.Villars, P., Prince, A. and Okamoto, H.: Handbook of Ternary Alloy Phase Diagrams, Vol. 4, (ASM International, Materials Park, Ohio, 1995), p. 4315.Google Scholar
13.Villars, P., Prince, A. and Okamoto, H.: Handbook of Ternary Alloy Phase Diagrams, Vol. 3, (ASM International, Materials Park, Ohio, 1995), p. 2905.Google Scholar
14.Suryanarayana, C.: Mechanical alloying and milling. Progr. Mater. Sci. 46, 1 (2001).Google Scholar
15.Lü, L. and Lai, M.O.: In Mechanical Alloying (Kluwer Academic Publishers, New York, 1998), p. 88.Google Scholar
16.Klassen, T., Oehring, M. and Bormann, R.: The early stages of phase formation during mechanical alloying of Ti–Al. J. Mater. Res. 9, 47 (1994).Google Scholar
17.Suryanarayana, C., Chen, G.H., Frefer, A. and Froes, F.H.: Structural evolution of mechanical alloyed Ti–Al alloys. Mater. Sci. Eng. A 158, 93 (1992).CrossRefGoogle Scholar
18.Oehring, M., Klassen, T. and Bormann, R.: Formation of metastable Ti–Al solid solutions by mechanical alloying and ball milling. J. Mater. Res. 8, 2819 (1993).CrossRefGoogle Scholar
19.Guan, Z.Q., Pfullmann, Th., Oehring, M. and Bormann, R.: Phase formation during ball milling and subsequent thermal decomposition of Ti–Al–Si powder blends. J. Alloys Compd. 252, 245 (1997).CrossRefGoogle Scholar
20.Rao, K.P. and Zhou, J.B.: Characterization of mechanically alloyed Ti–Al–Si powder blends and their subsequent thermal stability. Mater. Sci. Eng. A 338, 282 (2002).Google Scholar
21.King, H.W.: Quantitative size-factors for metallic solid solutions. J. Mater. Sci. 1, 79 (1966).Google Scholar
22.Leonard, R.T. and Koch, C.C.: X-ray intensity decrease from absorption effects in mechanically milled systems. Scripta Mater. 36, 41 (1997).Google Scholar
23.Barrett, C.S. and Massalski, T.B.: Structure of Metals (Pergaman Press, Oxford, U.K., 1980), p. 621.Google Scholar
24.Yan, Z.H., Oehring, M. and Bormann, R.: Metastable phase formation in mechanically alloyed and ball milled Ti–Si. J. Appl. Phys. 72, 2478 (1992).Google Scholar
25.Oehring, M., Yan, Z.H., Klassen, T. and Bormann, R.: Competition between stable and metastable phases during mechanical alloying and ball milling. Phys. Status. Solidi. 131, 671 (1992).Google Scholar
26.Liu, Z.G., Guo, J.T., Ye, L.L., Li, G.S. and Hu, Z.Q.: Formation mechanism of TiC by mechanical alloying. Appl. Phys. Lett. 65, 2666 (1994).Google Scholar
27.El-Eskandarany, M.S.: Synthesis of nanocrystalline titanium carbide alloy powders by mechanical solid state reaction. Metall. Mater. Trans. A 27, 2374 (1996).Google Scholar
28.Choi, C.J.: Preparation of ultrafine TiC–Ni cermet powders by mechanical alloying. J. Mater. Proc. Tech. 104, 127 (2000).Google Scholar
29.Krasnowski, M., Witek, A. and Kulik, T.: The FeAl–30%TiC nanocomposite produced by mechanical alloying and hot-pressing consolidation. Intemetallics 10, 371 (2002).CrossRefGoogle Scholar
30.Krivoroutchko, K., Kulik, T., Matyja, H., Portnoy, V.K. and Fadeeva, V.I.: Solid state reactions in Ni–Al–Ti–C system by mechanical alloying. J. Alloys Compd. 308, 230 (2000).Google Scholar
31.Zhou, L.Z., Guo, J.T. and Fan, G.J.: Synthesis of NiAl–TiC nanocomposite by mechanical alloying elemental powders. Mater. Sci. Eng. A 249, 103 (1998).CrossRefGoogle Scholar
32.Schlesinger, M.E.: Thermodynamics of solid transition-metal silicides. Chem. Rev. 90, 607 (1990).Google Scholar
33.Rapp, R.A. and Zheng, X.: Thermodynamic consideration of grain refinement of aluminum alloys by titanium and carbon. Metall. Trans. A 22, 3071 (1991).Google Scholar
34.Pelleg, J. and Shor, Y.: Formation of C54 TiSi2 in a cosputtered (Ti+Si) blanket film in the presence of a TiN capping layer. Microelectron. Eng. 69, 65 (2003).Google Scholar
35.Joardar, J., Pabi, S.K. and Murty, B.S.: Estimation of entrapped powder temperature during mechanical alloying. Scripta Mater. 36, 1199 (2004).Google Scholar
36.Yen, B.K. and Aizawa, T.: Reaction synthesis of titanium silicides via self-propagating reaction kinetics. J. Am. Ceram. Soc. 81, 1953 (1998).Google Scholar
37.Ma, E., Pagan, J., Cranford, G. and Atzmon, M.: Evidence for self-sustained MoSi2 formation during room-temperature high-energy ball milling of elemental powders. J. Mater. Res. 8, 1836 (1993).Google Scholar
38.Camplell, S.J. and Kaczmarek, W.A.: Mössbauer effect studies of materials prepared by mechanochemical methods, in Mössbauer Spectroscopy Applied to Magnetism and Materials Science, Vol. 2, edited by Long, G.J. and Grandjean, F. (Plenum Press, New York, 1996), p. 288.Google Scholar