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Microstructure evolution of large-scale titanium slab ingot based on CAFE method during EBCHM

Published online by Cambridge University Press:  17 May 2017

Qian-Li Liu ,
Xiang-Ming Li  and
Ye-Hua Jiang
Qian-Li Liu
Affiliation:
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Xiang-Ming Li*
Affiliation:
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
Ye-Hua Jiang
Affiliation:
School of Materials Science and Engineering, Kunming University of Science and Technology, Kunming 650093, China
*
a) Address all correspondence to this author. e-mail: Lixm@kmust.edu.cn
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Abstract

The purpose of this work is, based on CAFE method, to study the microstructure evolution and optimize the quality of the large-scale titanium slab ingot during EBCHM. The nucleation parameters of the microstructure simulation of titanium ingot are determined based on one of the actual experimental results. For the determined parameters, our theoretical results are agreement with other experimental results. The effects of pouring temperature and pulling speed on the microstructure are presented based on CAFE method. The quantitative analyses of the simulated results show that with the pulling speed increasing, the number of grains decreases, whereas the mean grain radius increases under identical thermal condition; with the pouring temperature increasing, the mean grain radius increases under the given pulling speed. Our results are very important to obtain the optimal structure of the ingots by controlling pulling speed and pouring temperature.

Keywords

microstructure evolutionlarge-scale titanium slab ingotnucleation parametersCAFE method

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Type
Articles
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Journal of Materials Research , Volume 32 , Issue 16 , 28 August 2017 , pp. 3175 - 3182
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Copyright
Copyright © Materials Research Society 2017 

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Footnotes

Contributing Editor: Jürgen Eckert

References

REFERENCES

Boyer, R.R.: An overview on the use of titanium in the aerospace industry. Mater. Sci. Eng., A 213, 103–114 (1996).Google Scholar
Seok, S., Onal, C.D., Cho, K.J., and Wood, R.J.: A peristaltic soft robot with antagonistic nickel titanium coil actuators. IEEE ASME Trans. Mechatron. 18, 1485–1497 (2013).Google Scholar
Mitchell, A.: The electron beam melting and refining of titanium alloys. Mater. Sci. Eng., A 263, 217–223 (1999).Google Scholar
Vutova, K. and Donchev, V.: Electron beam melting and refining of metals: Computational modeling and optimization. Materials 6, 4626–4640 (2013).Google Scholar
Tatsuhiko, T., Kanayama, H., and Onoye, T.: Temperature measurement of molten metal surface in electron beam melting of titanium alloys. ISIJ Int. 32, 593–599 (1992).Google Scholar
Liu, Q.L., Li, X.M., and Jiang, Y.H.: Research progress of electron beam clod hearth melting for titanium and titanium alloys. Hot Work. Technol. 45, 9–14 (2016).Google Scholar
Wood, J.R.: Producing Ti-6Al-4V plate from single-melt EBCHM ingot. JOM 54, 56–58 (2002).CrossRefGoogle Scholar
Vutova, K., Koleva, E., and Mladenov, G.: Simulation of thermal transfer process in cast ingot at electron beam melting and refining. Int. Rev. Mech. Eng. 5, 257–265 (2009).Google Scholar
Koleva, E., Vutova, K., and Mladenov, G.: The role of ingot crucible thermal contact in mathematical modelling of the heat transfer during electron beam melting. Vacuum 62, 189–196 (2001).Google Scholar
Kalinyuka, A.N., Triguba, N.P., Zamkova, V.N., and Ivasishin, O.M.: Microstructure, texture, and mechanical properties of electron-beam melted Ti–6Al–4V. Mater. Sci. Eng., A 346, 178–188 (2003).Google Scholar
Atwood, R.C., Lee, P.D., and Minisandram, R.S.: Multiscale modelling of microstructure formation during vacuum arc remelting of titanium 6-4. J. Mater. Sci. 39, 7193–7197 (2004).Google Scholar
Rappaz, M. and Gandin, Ch.A.: Probabilistic modelling of microstructure formation in solidification processes. Acta Metall. Mater. 41, 345–360 (1993).CrossRefGoogle Scholar
Wu, S.P., Liu, D.R., Guo, J.J., Li, C.Y., and Su, Y.Q.: Numerical simulation of microstructure evolution of Ti–6Al–4V alloy in vertical centrifugal casting. Mater. Sci. Eng., A 426, 240–249 (2006).Google Scholar
Gandin, Ch.A. and Rappaz, M.: A coupled finite element-cellular automaton model for the prediction of dendritic grain structures in solidification processes. Acta Metall. Mater. 42, 2233–2246 (1994).Google Scholar
Gandin, Ch.A., Rappaz, M., and Tintillier, R.: Three-dimensional probabilistic simulation of solidification grain structures: Application to superalloy precision castings. Metall. Mater. Trans. A 24, 467–479 (1993).Google Scholar
Carozzani, T., Digonnet, H., and Gandin, C.: 3D CAFE modeling of grain structures: Application to primary dendritic and secondary eutectic solidification. Modell. Simul. Mater. Sci. Eng. 20, 15010–15028 (2012).Google Scholar
Rappaz, M., Gandin, C.A., Desbiolles, J.L., and Thévoz, P.: Prediction of grain structures in various solidification processes. Metall. Mater. Trans. A 27, 695–705 (1996).CrossRefGoogle Scholar
Tian, F.J., Li, Z.G., and Song, J.X.: Solidification of laser deposition shaping for TC4 alloy based on cellular automation. J. Alloys Compd. 676, 542–550 (2016).Google Scholar
Burbelko, A., Falkus, J., Kapturkiewicz, W., Sołek, K., Drożdż, P., and WróbeL, M.: Modeling of the grain structure formation in the steel continuous ingot by cafe method. Arch. Metall. Mater. 57, 379–384 (2012).Google Scholar
Liu, Q.L., Li, X.M., Chen, X.F., Geng, N.T., and Jiang, Y.H.: Numerical simulation of electron beam cold hearth melting for the large scale titanium slab ingot during solidification process. Spec. Cast. Nonferrous Alloys 3, 244–249 (2017).Google Scholar
Kurz, W., Giovanola, B., and Trivedi, R.: Theory of microstructural development during rapid solidification. Acta Metall. Mater. 34, 823–830 (1986).Google Scholar
Kou, H.C., Zhang, Y.J., Li, P.F., Hu, R., Li, J.S., and Zhou, L.: Numerical simulation of titanium alloy ingot solidification structure during VAR process based on three-dimensional CAFE method. Rare Met. Mater. Eng. 43, 1537–1542 (2014).Google Scholar
Wang, J.L., Wang, F.M., Zhao, Y.Y., Zhang, J.M., and Ren, W.: Numerical simulation of 3D-microstructures in solidification processes based on the CAFE method. Int. J. Miner., Metall. Mater. 16, 640–645 (2009).Google Scholar
Liu, Q.L., Li, X.M., and Jiang, Y.H.: Numerical simulation of EBCHM for the large-scale TC4 alloy slab ingot during the solidification process. Vacuum 141, 1–9 (2017).Google Scholar
Rappaz, M., Charbon, Ch., and Sasikumar, R.: About the shape of eutectic grains solidifying in a thermal gradient. Acta Metall. Mater. 42, 2365–2374 (1994).CrossRefGoogle Scholar