Effect of Compression with Oscillatory Torsion Processing on Structure and Properties of Cu


Article Preview

In this study, commercial Cu was subjected to plastic deformation by compression with oscillatory torsion. Different deformation parameters were adopted to study their effects on the microstructure and mechanical properties of Cu. The deformed microstructure was characterized by using scanning electron microscopy (SEM) equipment with electron backscattered diffraction (EBSD) facility and scanning transmission electron microscopy (STEM). The mechanical properties were determined on an MTS QTest/10 machine equipped with digital image correlation. Can be found, that process performed at high compression rate and high torsion frequency is recommended for the refining grain size. The size of structure elements: average grain size (D) and subgrain size (d) reached 0.42 m and 0.30 m respectively, and the fraction of high angle boundaries was 35%, when the sample was deformed at a torsion frequency f= 1.6 Hz and compression rate v=0.04 mm/s. Deformation at these parameters leads to an improvement in strength properties. The strength properties are about two times greater than the initial state.



Edited by:

Maria Richert




K. Rodak et al., "Effect of Compression with Oscillatory Torsion Processing on Structure and Properties of Cu", Materials Science Forum, Vol. 674, pp. 129-134, 2011

Online since:

February 2011




[1] J. Pawlicki, F. Grosman: Arch. of Civil and Mech. Eng. 4 (2004), p.45.

[2] J. Pawlicki, F. Grosman: Mech. 201 (2003), p.139.

[3] K. Rodak: Archives Materials Sci. 1 (2006), p.29.

[4] K. Rodak, T. Goryczka, Solid State Phenom. 130 (2007), p.111.

[5] F. Grosman, J. Pawlicki, in: Processes with forced deformation path, edited by Harbin Institute of Technology Press, New Forming Technology (2004).

[6] Z. Gronostajski, F. Grosman, K. Jaśkiewicz, J. Pawlicki, in: Effect of variable deformation path on material's force-energy parameters and structure, edited by Committee of Metallurgy of the Polish Academy of Sciences, Research in Polish metallurgy at the beginning of XXI century. (2006).

[7] L. Chevalier, S. Calloch, F. Hild, Y. Marco: European Journ. of Mech. - A/Solids 20 (2001), p.169.

[8] W. H. Huang, C.Y. Yu, P.W. Kao, C.P. Chang: Mat. Science Eng. A 366 (2004), p.221.

[9] F. Dalla Torre, R. Lapovok, J. Sandlin, P.F. Thomson, C.H.J. Davies, E.V. Pereloma: Acta Mater. 52 (2004), p.4819.

[10] R.Z. Valiev, I. V. Alexandrov, Y.T. Zhu, T.C. Lowe: J. Mater. Res. 1 (2002), p.5.

[11] Y.M. Wang, E. Ma: Acta Material. 52 (2004), p.1699.