Skip to main content Accessibility help
×
Home

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

  • Yaohua Zhu (a1), Suet To (a1), Xianming Liu (a2), Guoliang Hu (a3) and Qing Xu (a3)...

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).

Copyright

Corresponding author

a)Address all correspondence to these authors. e-mail: yaohuazhu@hotmail.com

References

Hide All
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).
2.Conrad, H.: Effects of electric current on solid-state phase transformations in metals. Mater. Sci. Eng., A 287, 227 (2000).
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).
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).
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).
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).
7.Troitskii, O.A.: Electromechanical effect in metals. Zh. Eksp. Teor. Fiz. 10, 18 (1969).
8.Sprecher, A.F., Mannan, S.L., and Conrad, H.: On the mechanisms for the electroplastic effect in metals. Acta Metall. 34, 1145 (1986).
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).
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).
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).
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).
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).
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).
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).
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.
17.Gumbsch, P. and Gao, H.J.: Dislocations faster than the speed of sound. Science 283, 965 (1998).
18.Hao, T., Tanimoto, H., and Mizubayashi, H.: Transformation to nanocrystallines in amorphous alloys induced by resonant electropulsing. Mater. Trans. 46, 2898 (2005).
19.Mizubayashi, H., Takarashi, T., and Nakamoto, K.: Nanocrystalline transformation and inverse transformation in metallic glasses induced by electropulsing. Mater. Trans. 48, 1665 (2007).
20.Dolinsky, Y. and Elprin, T.: Thermodynamics of phase transformations in current-carrying conductors. Phys. Rev. B 47(22), 14778 (1993).

Keywords

Metrics

Full text views

Total number of HTML views: 0
Total number of PDF views: 0 *
Loading metrics...

Abstract views

Total abstract views: 0 *
Loading metrics...

* Views captured on Cambridge Core between <date>. This data will be updated every 24 hours.

Usage data cannot currently be displayed