Results are presented from a computer study of a promising method of high-rate plastic deformation – Multi-ECAP-Conform (M-ECAP-C) – for obtaining long ultrafine-grained semifinished products (wire rods) of aluminum alloy EN-AW 6101 in a single pressing cycle. It is shown that the distribution of cumulative strain in a semifinished product can be controlled by changing the geometry of the tool. The study examined three geometric variants for the outlet section of the pressing channel and used the results to develop an efficient new channel geometry for pressing by the M-ECAP-C method. The new channel shape makes the strain state of semifinished products more uniform during the stage of stable flow of the material, lowers the pressing forces, and reduces the tensile stresses in the deformation zone.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
G. J. Raab, R. Z. Valiev, T. C. Lowe, and Yu. T. Zhu, “Continuous processing of ultrafine grained Al by ECAPConform,” Mater. Sci. Eng., A 382, 30–34 (2004).
G. I. Raab, “Plastic fl ow at equal channel angular processing in parallel channels,” Mater. Sci. Eng., A 410–411, 230–233 (2005).
G. I. Raab, “Advance ECAP techniques with increased strain per pass,” Ultrafine Grained Materials IV: TMS 2006 Ann. Meet., Y. T. Zhu et al. (eds.), March 12–16, 2006, San Antonio, Texas, U.S., pp. 177–181.
R. Z. Valiev and T. Langdon, “Principles of equal-channel angular pressing as a processing tool for grain refinement,” Prog. Mater. Sci., 51, 881–981 (2006).
K. Nakashima, Z. Horita, M. Nemoto, and T. G. Langdon, “Development of a multi-pass facility for equal-channel angular pressing to high total strains,” Mater. Sci. Eng., A 281, 82–87 (2000).
E. Fakhretdinova, G. Raab, O. Ryzhikov, and R. Valiev, “Processing ultrafine-grained aluminum alloy using Multi-ECAP-Conform technique,” IOP Conf. Ser. Mater. Sci. Eng., 63, 012037 (2014).
V. A. Kolmogorov, Mechanics of Metal-Shaping, Metallurgiya, Moscow (1986).
8. E. I. Fakhretdinova, G. I. Raab, and R. Z. Valiev, “Modeling of metal flow during processing by Multi-ECAP-Conform,” Adv. Eng. Mater. (2015), DOI: 10.1002/adem.201500125.
G. I. Raab, “On the industrial production of ultrafine-grained bulk materials,” Fiz. Tekh. Vys. Davl., 15, No. 1, 72 (2004).
G. I. Raab, “Equal-channel angular pressing in parallel channels,” Proc. TMS, 229 (2005).
G. Raab and R. Lapovok, “Modeling of stress-strain distribution in ECAE by analytical-experimental method,” Ultrafi ne Grained Materials IV: TMS 2006 Ann. Meet., Y. T. Zhu et al. (eds.) (2006), pp. 189–194.
F. Z. Utyashev and G. I. Raab, Deformational Methods of Producing and Treating Ultrafine-Grained and Nanostructured Materials, Gilem, NIK Bashk. Entsikl., Ufa (2013).
G. I. Raab, F. F. Safi n, and R. Z. Valiev, “Modeling the process of equal-channel pressing in accordance with the Conform scheme for a long titanium semifinished product,” Kuzn.-Shtamp. Proizv. Obrab. Mater. Davl., No. 6, 41–44 (2006).
Author information
Authors and Affiliations
Corresponding author
Additional information
Translated from Metallurg, No. 11, pp. 22–27, November, 2015.
Rights and permissions
About this article
Cite this article
Raab, G.I., Fakhretdinova, E.I., Valiev, R.Z. et al. Computer Study of the Effect of Tooling Geometry on Deformation Parameters in the Plastic Shaping of Aluminum Wire Rod by Multi-ECAP-Conform. Metallurgist 59, 1007–1014 (2016). https://doi.org/10.1007/s11015-016-0207-9
Received:
Published:
Issue Date:
DOI: https://doi.org/10.1007/s11015-016-0207-9