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Static electropulsing-induced phase transformations of a cold-deformed ZA27 alloy

Published online by Cambridge University Press:  26 July 2011

Yaohua Zhu ,
Suet To ,
Xianming Liu ,
Guoliang Hu  and
Qing Xu
Yaohua Zhu*
Affiliation:
State Key Laboratory in Ultra-precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong 852, People’s Republic of China
Suet To*
Affiliation:
State Key Laboratory in Ultra-precision Machining Technology, Department of Industrial and Systems Engineering, The Hong Kong Polytechnic University, Hong Kong 852, People’s Republic of China
Xianming Liu
Affiliation:
Hefei National Laboratory for Physical Science at Microscale, University of Science and Technology of China, Hefei 230026, People’s Republic of China
Guoliang Hu
Affiliation:
Graduate School at Shenzhen, Tsinghua University, Guangdong 518055, People’s Republic of China
Qing Xu
Affiliation:
Graduate School at Shenzhen, Tsinghua University, Guangdong 518055, People’s Republic of China
*
a)Address all correspondence to these authors. e-mail: yaohuazhu@hotmail.com
b)e-mail: mfsto@inet.polyu.edu.hk
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Abstract

Static electropulsing-induced phase transformations of a cold-drawn ZA27 alloy wire were studied by using x-ray diffraction, backscattered scanning electron microscopy, and electron backscattered diffraction (EBSD) techniques. By using EBSD, phases with close microstructure are discriminated, based on transmission electron microscopy determined lattice parameters of phases. Thus, it was quantitatively detected that electropulsing tremendously accelerated phase transformations in two stages: (i) η′S and ε′T decomposed sequentially (in a way of quenching) and (ii) ε′T and η′S formed via reverse decompositions (in a way of up-quenching).

Keywords

AlloyElectromigrationPhase transformation
Type
Articles
Information
Journal of Materials Research , Volume 26 , Issue 14 , 28 July 2011 , pp. 1696 - 1701
Copyright
Copyright © Materials Research Society 2011

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References

REFERENCES

1.Onodera, Y. and Hirano, K.I.: The effect of direct electric current on precipitation in a bulk Al-4%Cu alloy. J. Mater. Sci. 11, 809 (1976).CrossRefGoogle Scholar
2.Conrad, H.: Effects of electric current on solid-state phase transformations in metals. Mater. Sci. Eng., A 287, 227 (2000).CrossRefGoogle Scholar
3.Zhou, Y.Z., Zhang, W., Sui, M.L., Li, D.X., He, G.H., and Guo, J.D.: Influence of electropulsing on nucleation during phase transformation. J. Mater. Res. 17, 921 (2002).CrossRefGoogle Scholar
4.Zhu, Y.H., To, S., Lee, W.B., Liu, X.M., Jiang, Y.B., and Tang, G.Y.: Electropulsing-induced phase transformations in a Zn-Al based alloy. J. Mater. Res. 24, 2661 (2009).CrossRefGoogle Scholar
5.To, S., Zhu, Y.H., Lee, W.B., Tang, G.Y., Liu, X.M., and Jiang, Y.B.: Effects of dynamic electropulsing on phase transformation of a Zn-Al based alloy. Mater. Trans. 50, 1105 (2009).CrossRefGoogle Scholar
6.Gromov, V.E., Zuev, L.B., and Tsellermar, V.Y.: Laws of electric stimulation of plastic development of metals and alloys at various structural level. Russ. Phys. J. 39, 257 (1996).CrossRefGoogle Scholar
7.Troitskii, O.A.: Electromechanical effect in metals. Zh. Eksp. Teor. Fiz. 10, 18 (1969).Google Scholar
8.Sprecher, A.F., Mannan, S.L., and Conrad, H.: On the mechanisms for the electroplastic effect in metals. Acta Metall. 34, 1145 (1986).CrossRefGoogle Scholar
9.Yang, D. and Conrade, H.: Exploratory study into the effects of an electric field and high current density electropulsing on plastic deformation. Intermetallics 9, 943 (2001).CrossRefGoogle Scholar
10.Zhu, Y.H., To, S., Lee, W.B., Liu, X.M., Jiang, Y.B. and Tang, G.Y.: Effects of dynamic electropulsing on microstructure and elongation of a Zn-Al alloy. Mater. Sci. Eng., A 501, 125 (2009).CrossRefGoogle Scholar
11.Zhu, Y.H.: General rule of phase decomposition in Zn-Al based alloys. II: On effect of external stress on phase transformation. Mater. Trans. JIM 45, 3083 (2004).CrossRefGoogle Scholar
12.Zhu, Y.H., Man, H.C., Dorantes-Rosales, H.J., and Lee, W.B.: Ageing characteristics of furnace cooled eutctoid Zn-Al based alloy. J. Mater. Sci. 38, 2925 (2003).CrossRefGoogle Scholar
13.Zhu, Y.H., To, S., Lee, W.B., Zhang, S.J., and Cheung, C.F.: Ultra-precision raster milling-induced phase transformation and plastic deformation at the surface of a Zn-Al- based alloy. Scr. Mater. 62, 101 (2010).CrossRefGoogle Scholar
14.Jiang, Y.B., Tang, G.Y., Shek, C.H., Zhu, Y.H., Guan, L., Wang, S.N., and Xu, Z.H.: The effect of electropulsing treatment on the solid solution behavior of aged AZ61 alloy strip. J. Mater. Res. 23, 2685 (2008).CrossRefGoogle Scholar
15.Zhu, Y.H., To, S., and Liu, X.M.: Use of EBSD to study electropulsing induced reverse phase transformations in a Zn-Al alloy (ZA22). J. Microsc. 242, 62 (2011).CrossRefGoogle Scholar
16.Conrad, H. and Sprecher, A.F.: The electroplastic effect in metals, in Dislocation in Solids, edited by Nabarro, F.R.N. (Elsevier, Amsterdam, 2009), p. 497.Google Scholar
17.Gumbsch, P. and Gao, H.J.: Dislocations faster than the speed of sound. Science 283, 965 (1998).CrossRefGoogle Scholar
18.Hao, T., Tanimoto, H., and Mizubayashi, H.: Transformation to nanocrystallines in amorphous alloys induced by resonant electropulsing. Mater. Trans. 46, 2898 (2005).CrossRefGoogle Scholar
19.Mizubayashi, H., Takarashi, T., and Nakamoto, K.: Nanocrystalline transformation and inverse transformation in metallic glasses induced by electropulsing. Mater. Trans. 48, 1665 (2007).CrossRefGoogle Scholar
20.Dolinsky, Y. and Elprin, T.: Thermodynamics of phase transformations in current-carrying conductors. Phys. Rev. B 47(22), 14778 (1993).CrossRefGoogle Scholar