Modelling of Strain Field in Extrusion by Die Geometry
The strain distributions within the deformation zone and the total strain in the extruded product cross-sections for A1Cu4Mg alloy were determined. The visioplasticity method was used in calculations. The plane indirect mode of extrusion was performed with variable die geometry. The strain distribution within the deformation zone can be affected by the shape of the die and in this way, the material structure can be controlled. The range of deformation zone depends on the die used. The most uniform strain distribution and material structure were obtained when the so-called convex-faced die was applied.
W. LIBURA and J. ZASADZIŃSKI, The influence of strain gradient on material structure during extrusion of the ALCu4Mg alloy, J. Mat. Proc. Technol., Elsevier, 34, 517- 524, 1992.
S. KIKUCHI, M. SUKIMOTO and K. NAKANISHI, Analysis of metal flow and recrystallization behaviour and application of the results to commercial production, Proc. Fourth Int. Aluminum Extr. Seminar, Chicago, 2, 343-355, 1988.
K.H. BECKER, H. LIPPMANN and E. TEUBL, Plastic behaviour of metals and strain localization, Naturwissenschaften, 2, 633-639, 1985.
W. BOCHNIAK and A. KORBEL, Some new energy-saving technological solutions in metal forming, Proc. Int. Congress on Metallurgy and Materials Technology, Sao Paulo, 1994 [in press].
E.G. THOMSEN, C.T. YANG and J.B. BIERBOWER, An experimental investigation of mechanics of plastic deformation of metals, Univ. of Calif. Publ. Engng., 5, 4, 89-144, 1954.
A. SHABAIK and S. KOBAYASHI, Computer application to the visioplasticity method, Trans. ASME, 89B, 5, 339-346, 1967.
T. BEDNARSKI, A new method in visioplasticity, Proc. Conf. "Przeróbka Plastyczna 93", Metallurgical Committee of Polish Academy of Sciences, Krynica, 5-20, 1993.
W. LIBURA, Analysis of the strain field and material structure during extrusion of alluminium alloys [in Polish], Wyd. AGH, Dissertations and Monographies, 17, 1994.
J. ZASADZIŃSKI and W. LIBURA, Force parameters in extrusion of metals through convex dies, Proc. Fourth ICTP, Adv. Techn. Plast., 1, 605-608, Beijin 1993.
Copyright © 2014 by Institute of Fundamental Technological Research
Polish Academy of Sciences, Warsaw, Poland