Hostname: page-component-78c5997874-94fs2 Total loading time: 0 Render date: 2024-11-05T05:24:17.220Z Has data issue: false hasContentIssue false
  • English
  • Français

Effect of Mn content on the microstructure and mechanical properties of (Ti,Mn)Al/Al2O3 in situ composites prepared by hot pressing

Published online by Cambridge University Press:  06 June 2013

Fen Wang ,
Kun Zhang ,
Jianfeng Zhu  and
Lan Ye
Fen Wang
Affiliation:
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, School of Material Science and Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, 710021, China
Kun Zhang*
Affiliation:
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, School of Material Science and Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, 710021, China
Jianfeng Zhu
Affiliation:
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, School of Material Science and Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, 710021, China
Lan Ye
Affiliation:
Key Laboratory of Auxiliary Chemistry & Technology for Chemical Industry, Ministry of Education, School of Material Science and Engineering, Shaanxi University of Science & Technology, Xi’an, Shaanxi, 710021, China
*
a)Address all correspondence to this author. e-mail: sifan279318474@yahoo.cn; sifan279318474@163.com
Get access

Abstract

(Ti,Mn)Al/Al2O3 composites were successfully synthesized by reactive hot pressing from Ti–Al–TiO2–MnO2 system. The effect of Mn coming from the Al–MnO2 reaction on the microstructure and mechanical properties of (Ti,Mn)Al/Al2O3 in situ composites was investigated in detail. The results show that the as-prepared products are mainly composed of (Ti,Mn)Al matrix (including a little of Ti3Al) and Al2O3 particles, together with a few amount of Al77.5Mn22.5 phases. The (Ti,Mn)Al matrix is refined and the in situ generated Al2O3 particles distribute uniformly on the boundaries of (Ti,Mn)Al by incorporation of Mn. The (Ti,Mn)Al/Al2O3 composite with 1.92 wt% Mn possesses the best mechanical properties. Compared with Mn-free samples obtained from Ti–Al–TiO2 system, the hardness, flexural strength, and fracture toughness are enhanced by 53.46%, 76.49%, and 64.21%, respectively. The strengthening and toughening mechanisms were also discussed specifically.

Type
Articles
Information
Journal of Materials Research , Volume 28 , Issue 12 , 28 June 2013 , pp. 1574 - 1581
Copyright
Copyright © Materials Research Society 2013 

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

References

REFERENCES

Xiang, L.Y., Wang, F., Zhu, J.F., and Wang, X.F.: Mechanical properties and microstructure of Al2O3/TiAl in situ composites doped with Cr2O3. Mater. Sci. Eng., A 528(9), 3337 (2011).CrossRefGoogle Scholar
Peng, L.M., Li, Z., Li, H., Wang, J.H., and Gong, M.: Microstructural characterization and mechanical properties of TiAl-Al2Ti4C2-Al2O3-TiC in situ composites by hot-press-aided reaction synthesis. J. Alloys Compd. 414(1–2), 100 (2006).CrossRefGoogle Scholar
Heshmati-Manesh, S., Nili Ahmadabadi, M., Ghasemiarmaki, H., and Jafarian, H.R.: Effect of initial microstructure and further thermomechanical processing on microstructural evolution in a Ti-47Al-2Cr alloy J. Alloys Compd. 436(1–2), 200 (2007).CrossRefGoogle Scholar
Shu, S.L., Qiu, F., Xing, B., Jin, S.B., Wang, Y.W., and Jiang, Q.C.: Study of effect of Mn addition on the mechanical properties of Ti2AlC/TiAl composites through first principles study and experimental investigation. Intermetallics 28, 65 (2012).CrossRefGoogle Scholar
Yeh, C.L. and Li, R.F.: Formation of TiAl/Ti5Si3 and TiAl/Al2O3 in situ composites by combustion synthesis. Intermetallics 16(1), 64 (2008).CrossRefGoogle Scholar
Claussen, N., Garcia, D.E., and Janssen, R.: Reaction sintering of alumina-aluminide alloys (3A). J. Mater. Res. 11(11), 2884 (1996).CrossRefGoogle Scholar
Wang, Y.H., Lin, J.P., He, Y.H., Lu, X., Wang, Y.L., and Chen, G.L.: Microstructure and mechanical properties of high Nb containing TiAl alloys by reactive hot pressing. J. Alloys Compd. 461(1–2), 367 (2008).CrossRefGoogle Scholar
Kim, Y.W.: Microstructural evolution and mechanical properties of a forged gamma titanium aluminide alloy. Acta. Metall. 40(6), 1121 (1992).CrossRefGoogle Scholar
Wang, X.F., Wang, F., Zhu, J.F., and Xiang, L.Y.: Reinforcing and toughening of TiAl composites by doping Sm2O3. Trans. Nonferrous Met. Soc. China 21(6), 1263 (2011).CrossRefGoogle Scholar
Chen, Y.Y., Niu, H.Z., Kong, F.T., and Xiao, S.L.: Microstructure and fracture toughness of a β phase containing TiAl alloy. Intermetallics 19(10), 1405 (2011).CrossRefGoogle Scholar
Van Meter, M.L., Kampe, S.L., and Christodoulou, L.: Mechanical properties of near-γ titanium aluminides reinforced with high volume percentages of TiB2. Scr. Mater. 34(8), 1251 (1996).CrossRefGoogle Scholar
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(1–2), 85 (2001).CrossRefGoogle Scholar
Forouzanmehr, N., Karimzadeh, F., and Enayati, M.H.: Synthesis and characterization of TiAl/α-Al2O3 nanocomposite by mechanical alloying. J. Alloys Compd. 478(1–2), 257 (2009).CrossRefGoogle Scholar
Chen, J.X. and Zhou, Y.C.: Strengthening of Ti3AlC2 by incorporation of Al2O3. Scr. Mater. 50(6), 897 (2004).CrossRefGoogle Scholar
Travitzkya, N., Gotmanb, I., and Claussen, N.: Alumina–Ti aluminide interpenetrating composites: Microstructure and mechanical properties. Mater. Lett. 57(22–23), 3422 (2003).CrossRefGoogle Scholar
Shena, Y.F., Zou, Z.G., Xiao, Z.G., Liu, K., Long, F., and Wu, Y.: Properties and electronic structures of titanium aluminides–alumina composites from in-situ SHS process. Mater. Sci. Eng., A 528(4–5), 2100 (2011).CrossRefGoogle Scholar
Du, Y.J., Li, S.Y., Zhang, K., and Lu, K.: BN/Al composite formation by high-energy ball milling. Scr. Mater. 36(1), 7 (1997).CrossRefGoogle Scholar
Emamy, M., Mahta, M., and Rasizadeh, J.: Formation of TiB2 particles during dissolution of TiAl3 in Al–TiB2 metal matrix composite using an in situ technique. Compos. Sci. Technol. 66(7–8), 1063 (2006).CrossRefGoogle Scholar
Ai, T.T.: Microstructure and mechanical properties of in-situ synthesized Al2O3/TiAl composites. Chin. J. Aeronaut. 21(6), 559 (2008).Google Scholar
Zhou, L.G., Dong, L., He, L.L., and Zhang, C.B.: Ab initio pseudopotential calculations on the effect of Mn doped on lattice parameters of L10 TiAl. Intermetallics 8(5–6), 637 (2000).CrossRefGoogle Scholar
Mao, S.X., McMinn, N.A., and Wu, N.Q.: Processing and mechanical behaviour of TiAl/NiAl intermetallic composites produced by cryogenic mechanical alloying. Mater. Sci. Eng., A 363(1–2), 275 (2003).CrossRefGoogle Scholar
Lin, Z.J., Li, M.S., and Zhou, Y.C.: Tem investigations on layered ternary ceramics. J. Mater. Sci. Technol. 32(2), 145 (2007).Google Scholar
Yu, Z.Q., Wu, G.H., Sun, D.L., and Jiang, L.T.: Coating of Y2O3 additive on Al2O3 powder and its effect on the wetting behaviour in the system Al2O3p/Al. Mater. Lett. 57(20), 3111 (2003).CrossRefGoogle Scholar
Contreras, A., Bedolla, E., and Pérez, R.: Interfacial phenomena in wettability of TiC by Al-Mg alloys. Acta. Mater. 52(4), 985 (2004).CrossRefGoogle Scholar
Bohn, R., Klassen, T., and Bormann, R.: Room temperature mechanical behavior of silicon-doped TiAl alloys with grain sizes in the nano- and submicron-range. Acta Mater. 49(2), 299 (2001).CrossRefGoogle Scholar
Paradkar, A.G., Kamat, S.V., Gogia, A.K., and Kashyap, B.P.: On the validity of Hall-Petch equation for single-phase β Ti-Al-Nb alloys undergoing stress-induced martensitic transformation. Mater. Sci. Eng., A 520(1–2), 168 (2009).CrossRefGoogle Scholar
Zhu, J.F, Yang, W.W., Yang, H.B., and Wang, Fen: Effect of Nb2O5 on the microstructure and mechanical properties of TiAl based composites produced by hot pressing. Mater. Sci. Eng., A 528(21), 6642 (2011).CrossRefGoogle Scholar