Abstract
Structure and phase composition of 1420 (Al-Mg-Li-Zr) alloy obtained by equal channel angular pressing during mechanical tensile testing and annealing within the temperature range 423–723 K were studied by means of TEM and XRDA. It was revealed that structural changes of the alloy after the mechanical tests corresponded to two stages of the deformation. The alloy structure was unstable due to its non-equilibrium nature and came to the equilibrium state during the annealing. Changes in the grain size and phase composition during the alloy annealing resulted in a significant decrease of its hardness.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
I. V. ALEXANDROV, Y. T. ZHU, T. C. LOWE and R. Z. VALIEV, Powder Metall. 41 (1998) 11; (1994) 1631.
B. B. STRAUMAL, B. BARETZKY, A. A. MAZILKIN, F. PHILLIPP, O. A. KOGTENKOVA, M. N. VOLKOV and R. Z. VALIEV, Acta Materialia 52 (2004) 4469.
V. M. SEGAL, Mater. Sci. Eng. A 197 (1995) 157.
R. Z. VALIEV, N. A. KRASILNIKOV and N. K. TSENEV, Mater. Sci. Eng. A 137 (1991) 35.
K. PARK, H. KWON, W. KIM and Y. KIM, ibid. 316 (2001) 145.
N. TSUJI, Y. SAITO, H. UTSUNOMIYA and S. TANIGAWA, Scripta Mater. 40 (1999) 795.
R. Z. VALIEV, D. A. SALIMONENKO, N. K. TSENEV, P. B. BERBON and T. G. LANGDON, ibid. 37 (1997) 1945.
S. KOMURA, P. B. BERBON, M. FURUKAWA, Z. HORITA, M. NEMOTO and T. G. LANGDON, ibid. 38 (1998) 1851.
M. M. MYSHLYAEV, V. V. SHPEIZMAN and M. M. KAMALOV, Phys. Sol. State 43 (2001) 2099.
T. G. LANGDON, Metall. Trans. 13A (1982) 689.
M. FURUKAWA, Y. IWAHASHI, Z. HORITA, M. NEMOTO and T. G. LANGDON, Mat. Sci. Eng. A 257 (1998) 328.
“Electron Microscopy of Thin Crystals”, edited by P. B. Hirsch, A. Howie, R. B. Nicholson, D. W. Pashley and M. J. Whelan, (Butterworths, London, 1965).
T. B. MASSALSKI et al. (eds.), “Binary Alloy Phase Diagrams”. (ASM International, Materials Park, OH, 1993) p. 127.
J. N. FRIDLYANDER, K. V. CHUISTOV, A. L. BERESINA and N. I. KOLOBNEV, Aluminum—Lithium Alloys (Structure and Properties), (Naukova Dumka, Kiev, 1992) p. 192.
J. C. M. LI, in “Electron Microscopy and Strength of Crystals” edited by G. Thomas and J. Washburn (N.Y., 1963) p. 713.
S. SEREZARA, G. COCCO, G. FAGHERAZZI and L. SCHIFFINI, Phil. Mag. 35 (1977) 378.
Author information
Authors and Affiliations
Corresponding author
Rights and permissions
About this article
Cite this article
Mazilkin, A.A., Myshlyaev, M.M. Microstructure and thermal stabilityof superplastic aluminium—lithium alloy after severe plastic deformation. J Mater Sci 41, 3767–3772 (2006). https://doi.org/10.1007/s10853-006-2637-4
Received:
Accepted:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s10853-006-2637-4