Hostname: page-component-586b7cd67f-r5fsc Total loading time: 0 Render date: 2024-11-24T09:28:50.814Z Has data issue: false hasContentIssue false
  • English
  • Français

Microstructure evolution and hot deformation behavior of spray-deposited TiAl alloys

Published online by Cambridge University Press:  14 August 2018

Yandong Jia ,
Long Xu ,
Pan Ma ,
Konda Gokuldoss Prashanth ,
Chenghui Yao  and
Gang Wang
Yandong Jia
Affiliation:
Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai 200444, China
Long Xu
Affiliation:
Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai 200444, China
Pan Ma*
Affiliation:
School of Materials Engineering, Shanghai University of Engineering Science, Shanghai 201620, China
Konda Gokuldoss Prashanth
Affiliation:
Department of Manufacturing and Civil Engineering, Norwegian University of Science and Technology, Gjøvik 2815, Norway; Erich Schmid Institute of Materials Science, Austrian Academy of Sciences, Leoben A-8700, Austria; and Department of Mechanical and Industrial Engineering, Tallinn University of Technology, Tallinn 19086, Estonia
Chenghui Yao
Affiliation:
School of Materials Science and Engineering, Harbin Institute of Technology, Harbin 151001, China
Gang Wang*
Affiliation:
Laboratory for Microstructures, Institute of Materials, Shanghai University, Shanghai 200444, China
*
a)Address all correspondence to these authors. e-mail: [email protected]
b)e-mail: [email protected]
Get access

Abstract

Ti–Al alloys are established as promising candidates for aerospace applications due to their lightweight, good elevated temperature strength, and decent corrosion resistance. In this study, a Ti–51Al (at.%) alloy is fabricated by spray deposition. The effects of temperature and strain rate on the deformation behavior of the spray-deposited Ti–Al alloy are investigated. The microstructural evolution of the Ti–Al alloy with different deformation temperatures is discussed in detail. A strain-dependent constitutive equation was proposed to predict the flow stresses at the elevated temperatures for the spray-deposited Ti–Al alloy. The microstructure of the as-deposited Ti–51Al alloy exhibits a α2/γ lamellar-structure with average size 25 ± 2 μm, due to the high cooling rate observed during solidification. The lamellar structure is embedded on a γ matrix. The amount of the α2/γ lamellar-structure reduces gradually with increasing the hot deformation temperature. After hot isostatic pressing at 1523 K, the microstructure is mainly comprised of the γ matrix.

Keywords

spray depositionrapid solidificationγ-TiAl alloymicrostructurehot deformation
Type
Article
Information
Journal of Materials Research , Volume 33 , Issue 18 , 28 September 2018 , pp. 2844 - 2852
Copyright
Copyright © Materials Research Society 2018 

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

Chen, G., Peng, Y.B., Zheng, G., Qi, Z.X., Wang, M.Z., Yu, H.C., Dong, C.L., and Liu, C.T.: Polysynthetic twinned TiAl single crystals for high-temperature applications. Nat. mater. 15, 876 (2016).CrossRefGoogle ScholarPubMed
Palm, M., Engberding, N., Stein, F., Kelm, K., and Irsen, S.: Phases and evolution of microstructures in Ti–60 at.% Al. Acta Mater. 60, 3559 (2012).CrossRefGoogle Scholar
Duarte, L.I., Viana, F., Ramos, A.S., Voeira, M.T., Leinenbach, C., Klotz, U.E., and Vieira, M.F.: Diffusion bonding of gamma-TiAl using modified Ti/Al nanolayers. J. Alloys Compd. 536, S424 (2012).CrossRefGoogle Scholar
Petra, E., Peter, S., Emad, M., Norbert, S., Joachim, K., Svea, M., and Hhlmut, C.: Effect of hot rolling and primary annealing on the microstructure and texture of a β-stabilised γ-TiAl based alloy. Acta Mater. 126, 145 (2017).Google Scholar
Yokoshima, S. and Yamaguchi, M.: Fracture behavior and toughness of PSTcrystals of TiA. Acta mater. 44, 873 (1996).CrossRefGoogle Scholar
Xiao, J., Li, D.S., Li, X.Q., and Deng, T.S.: Constitutive modeling and microstructure change of Ti–6Al–4V during the hot tensile deformation. J. Alloys Compd. 541, 346 (2012).CrossRefGoogle Scholar
Wang, G., Xu, L., Tian, Y.X., Zheng, Z., Cui, Y.Y., and Yang, R.: Flow behavior and microstructure evolution of a P/M TiAl alloy during high temperature deformation. Mater. Sci. Eng., A 528, 6754 (2011).CrossRefGoogle Scholar
Gerling, R., Schimansky, F.P., Wegmann, G., and Zhang, J.X.: Spray forming of Ti48.9Al (at.%) and subsequent hot isostatic pressing and forging. Mater. Sci. Eng., A 326, 73 (2002).CrossRefGoogle Scholar
Wegmann, G., Gerling, R., Schimansky, F.P., and Zhang, J.X.: Spray forming and subsequent forging of γ-titanium aluminide alloys. Mater. Sci. Eng., A 329–331, 99 (2002).CrossRefGoogle Scholar
Attar, H., Bönisch, M., Calin, M., Zhang, L.C., Scudino, S., and Eckert, J.: Selective laser melting of in situ titanium-titanium boride composites: Processing, microstructure and mechanical properties. Acta Mater. 76, 13 (2014).CrossRefGoogle Scholar
Zhang, L.C., Attar, H., Calin, M., and Eckert, J.: Review on manufacture by selective laser melting and properties of titanium based materials for biomedical applications. Mater. Technol. 731, 66 (2016).CrossRefGoogle Scholar
Attar, H., Calin, M., Zhang, L.C., Scudino, S., and Eckert, J.: Manufacture by selective laser melting and mechanical behavior of commercially pure titanium. Mater. Sci. Eng., A 593, 70 (2014).CrossRefGoogle Scholar
Ehtemam-Haghighi, S., Prashanth, K.G., Attar, H., Chaubey, A.K., Cao, G.H., and Zhang, L.C.: Evaluation of mechanical and wear properties of Ti–Nb–7Fe alloys designed for biomedical applications. Mater. Des. 111, 592 (2016).CrossRefGoogle Scholar
Okulov, I.V., Volegov, A.S., Attar, H., Bönisch, M., Ehtemam-Haghighi, S., Calin, M., and Eckert, J.: Composition optimization of low modulus and high-strength TiNb-based alloys for biomedical applications. J. Mech. Behav. Biomed. Mater. 65, 866 (2017).CrossRefGoogle ScholarPubMed
Froes, F.H. and Eylond, D.: Powder metallurgy of titanium alloys. Int. Mater. Rev. 35, 162 (1990).CrossRefGoogle Scholar
Xiao, D.H., Yuan, T.C., Ou, X.Q., and He, Y.H.: Microstructure and mechanical properties of powder metallurgy Ti–Al–Mo–V–Ag alloy. Trans. Nonferrous Met. Soc. China 21, 1269 (2011).CrossRefGoogle Scholar
Schimansky, F.P., Liu, K.W., and Gerling, R.: Spray forming of gamma titanium aluminides. Intermetallics 7, 1275 (1999).CrossRefGoogle Scholar
Liu, K.W., Gerling, R., and Schimansky, F.P.: Microstructure and tensile properties of spray formed gamma Ti48.9 at.% Al. Scr. Mater. 40, 601 (1999).CrossRefGoogle Scholar
Jia, Y.D., Cao, F.Y., Guo, S., Ma, P., Liu, J.S., and Sun, J.F.: Influence of second phases on mechanical properties of spray-deposited Al–Zn–Mg–Cu alloy. Mater. Des. 40, 536 (2012).CrossRefGoogle Scholar
Jia, Y.D., Cao, F.Y., Ma, P., scudino, S., Eckert, J., Sun, J.F., and Wang, G.: Microstructure and thermal conductivity of hypereutectic Al-high Si produced by casting and spray deposition. J. Mater. Res. 31, 2948 (2016).CrossRefGoogle Scholar
Li, H.Z., Li, Z., Zhang, W., Wang, Y., Liu, Y., and Wang, H.J.: High temperature deformability and microstructural evolution of Ti–47Al–2Cr–0.2Mo alloy. J. Alloys Compd. 518, 359 (2010).CrossRefGoogle Scholar
Jin, N.P., Zhang, H., Han, Y., Wu, W.X., and Chen, J.H.: Hot deformation behavior of 7151 aluminum alloy during compression at elevated temperature. Mater. Charact. 60, 530 (2009).CrossRefGoogle Scholar
Liang, X.P., Liu, Y., Li, H.Z., Zhou, C.X., and Xu, G.F.: Constitutive relationship for high temperature deformation of powder metallurgy Ti–47Al–2Cr–2Nb–0.2W alloy. Mater. Des. 37, 40 (2012).CrossRefGoogle Scholar
Kong, F.T., Chen, Y.Y., and Li, B.H.: Influence of yttrium on the high temperature deformability of TiAl alloys. Mater. Sci. Eng., A 499, 53 (2009).CrossRefGoogle Scholar
Jiang, G.T., Tian, S.W., Guo, W.Q., Zhang, G.H., and Zeng, S.W.: Hot deformation behavior and deformation mechanism of two TiAl–Mo alloys during hot compression. Mater. Sci. Eng., A 719, 104 (2018).CrossRefGoogle Scholar
Liu, D.M., Li, X.Z., Su, Y.Q., Guo, J.J., and Fu, H.Z.: Microstructure evolution in directionally solidified Ti–(50, 52) at.% Al alloys. Intermetallics 19, 175 (2011).CrossRefGoogle Scholar
Jung, I.S., Kim, M.C., Lee, J.H., Oh, M.H., and Wee, D.M.: High temperature phase equilibria near Ti–50 at.% Al composition in Ti–Al system studied by directional solidification. Intermetallics 7, 1247 (1999).CrossRefGoogle Scholar
Song, H.J., Lan, H., Bin, L., Hong, Z.Y., Wei, Z., Yu, H.X., and Yong, L.: Simulation of hot compression of Ti–Al alloy. Intermetallics 15, 700 (2007).Google Scholar
Sellars, C.M. and McTegart, W.J.: On the mechanism of hot deformation. Acta Metall. 14, 1136 (1966).CrossRefGoogle Scholar
Zener, C. and Hollomon, J.H.: Effect of strain rate upon plastic flow of steel. J. Appl. Phys. 15, 22 (1944).CrossRefGoogle Scholar
Jia, Y.D., Cao, F.Y., Guo, S., Ma, P., Liu, J.S., and Sun, J.F.: Hot deformation behavior of spray-deposited Al–Zn–Mg–Cu alloy. Mater. Des. 53, 79 (2014).CrossRefGoogle Scholar
Kim, H.Y., Sohn, W.H., and Hong, S.H.: High temperature deformation of Ti–(46–48)Al–2W intermetallic compounds. Mater. Sci. Eng., A 251, 216 (1998).CrossRefGoogle Scholar
Wan, Z.P., Sun, Y., Hu, L.X., and Yu, H.: Dynamic softening behavior and microstructural characterization of TiAl-based alloy during hot deformation. Mater. Charact. 130, 25 (2017).CrossRefGoogle Scholar
Kong, F.T., Cui, N., Chen, Y.Y., Wang, X.P., and Xiong, N.N.: Characterization of hot deformation behavior of as-forged TiAl alloy. Intermetallics 55, 66 (2014).CrossRefGoogle Scholar
Zhang, W., Liu, Y., Li, H.Z., Li, Z., Wang, H., and Liu, B.: Constitutive modeling and processing map for elevated temperature flow behaviors of a powder metallurgy titanium aluminide alloy. J. Mater. Process. Technol. 209, 5363 (2009).CrossRefGoogle Scholar
Mandal, S., Rakesh, V., Sivaprasad, P.V., Venugopal, S., and Kasiviswanathan, K.V.: Constitutive equations to predict high temperature flow stress in a Ti-modified austenitic stainless steel. Mater. Sci. Eng., A 510, 114 (2009).CrossRefGoogle Scholar
Changizian, P., Hanzaki, A.Z., and Roostaei, A.A.: The high temperature flow behavior modeling of AZ81 magnesium alloy considering strain effects. Mater. Des. 39, 384 (2012).CrossRefGoogle Scholar
Wei, D.X., Koizumi, Y.C., Nagasako, M., and Chiba, A.: Refinement of lamellar structures in Ti–Al alloy. Acta Mater. 125, 81 (2017).CrossRefGoogle Scholar
Liu, G.H., Wang, Z.D., Fu, T.L., Li, Y., Liu, H.T., Li, T.R., Gong, M.N., and Wang, G.D.: Study on the microstructure, phase transition and hardness for the TiAleNb alloy design during directional solidification. J. Alloys Compd. 650, 45 (2015).CrossRefGoogle Scholar
Chen, W.R., Zhao, L., and Beddoes, J.: Precipitation hardening of the fully lamellar structure of investment cast Ti–47Al–2Nb–1Mn–0.5Mo–0.5W–0.2 Si alloy. Scr. Mater. 41, 597 (1999).CrossRefGoogle Scholar