Modeling and production of high strength Al strips by equal channel multi angular pressing method
الموضوعات :Peyman Keshtiban 1 , Mohammad Zadshakouyan 2 , Ghader Faraji 3
1 - Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran
2 - Department of Mechanical Engineering, University of Tabriz, Tabriz, Iran
3 - Department of Mechanical Engineering, University College of Engineering, University of Tehran, Tehran 11155-4563, Iran
الکلمات المفتاحية: Experiment, Finite Element, Severe plastic deformation, Equal channel multi angular pressing, sheet,
ملخص المقالة :
Equal channel multi angular pressing (ECMAP) process is the efficient method to enhance the productivity of ultra-fine grained (UFG) materials, by increasing process continuity and as a result decreasing process required time. Comparing repetitive ECAP method, in the same period, the number of passes can be done by ECMAP. In this article, ECMAP of AL strips in two typical annealed and as received conditions studied, and route C was selected as multi pressing route. Values of equivalent plastic strain (PEEQ) and micro-hardness in the cross section of ECMAPed strips obtained both by FE simulations and practical tests, correspondingly. These values also used for obtaining the inhomogeneity of produced ECMAPed strips. Furthermore, mechanical property for both as received and annealed strips before and after pressing, studied experimentally. Also, load-displacement curve during ECMAP process obtained by FEM. For FEM results validation, PEEQ calculated by the analytical method, too. Results show that there is good conformity between FE, analytical and practical results.
References
[1] S. Arab, A. Akbarzadeh, "The effect of equal channel angular pressing process on the microstructure of az31 mg alloy strip shaped specimens", J. Magnesium Alloys, Vol. 1, No. 2, 2013, pp. 145-149.
[2] J.Y. Park, D.N. Lee, "Deformation and annealing textures of equal-channel angular pressed 1050 al alloy strips", Mater. Sci. Eng., A, Vol. 497, No. 1, 2008, pp. 395-407.
[3] K. Nakashima, Z. Horita, M. Nemoto, T.G. Langdon, "Development of a multi-pass facility for equal-channel angular pressing to high total strains", Mater. Sci. Eng., A, Vol. 281, No. 1, 2000, pp. 82-87.
[4] H.S. Kim, "Finite element analysis of deformation behaviour of metals during equal channel multi-angular pressing", Mater. Sci. Eng., A, Vol. 328, No. 1, 2002, pp. 317-323.
[5] J. Jung, S.C. Yoon, H.-J. Jun, H.S. Kim, "Finite element analysis of deformation homogeneity during continuous and batch type equal channel angular pressing", J. Mater. Eng. Perform., Vol. 22, No. 11, 2013, pp. 3222-3227.
[6] G. Faraji, A. Babaei, M.M. Mashhadi, K. Abrinia, "Parallel tubular channel angular pressing (ptcap) as a new severe plastic deformation method for cylindrical tubes", Mater. Lett., Vol. 77, No. 2012, pp. 82-85.
[7] G. Faraji, M. Mousavi Mashhadia, "Plastic deformation analysis in parallel tubular channel angular pressing (ptcap)", J. Adv. Mater. Pro., Vol. 1, No. 4, 2013, pp. 23-32.
[8] G. Faraji, M.M. Mashhadi, S.-H. Joo, H.S. Kim, "The role of friction in tubular channel angular pressing", Rev. Adv. Mater. Sci, Vol. 31, No. 2012, pp. 12-18.
[9] G. Faraji, M. Mashhadi, A. Dizadji, M. Hamdi, "A numerical and experimental study on tubular channel angular pressing (tcap) process", J. Mech. Sci. Technol., Vol. 26, No. 11, 2012, pp. 3463-3468.
[10] G. Faraji, P. Yavari, S. Aghdamifar, M.M. Mashhadi, "Mechanical and microstructural properties of ultra-fine grained az91 magnesium alloy tubes processed via multi pass tubular channel angular pressing (tcap)", J. Mater. Sci. Technol., Vol. 30, No. 2, 2014, pp. 134-138.
[11] F. Fereshteh-Saniee, M. Asgari, M. Barati, S.M. Pezeshki, "Effects of die geometry on non-equal channel lateral extrusion (necle) of az80 magnesium alloy", TTrans. Nonferrous Met. Soc. China, Vol. 24, No. 10, 2014, pp. 3274-3284.
[12] A. Shokuhfar, O. Nejadseyfi, "The influence of friction on the processing of ultrafine-grained/nanostructured materials by equal-channel angular pressing", J. Mater. Eng. Perform., Vol. 23, No. 3, 2014, pp. 1038-1048.
[13] Y. Iwahashi, Z. Horita, M. Nemoto, T.G. Langdon, "An investigation of microstructural evolution during equal-channel angular pressing", Acta Mater., Vol. 45, No. 11, 1997, pp. 4733-4741.
[14] N. El Mahallawy, F.A. Shehata, M.A. El Hameed, M.I.A. El Aal, H.S. Kim, "3d fem simulations for the homogeneity of plastic deformation in al–cu alloys during ecap", Mater. Sci. Eng., A, Vol. 527, No. 6, 2010, pp. 1404-1410.
[15] R. Smerd, S. Winkler, C. Salisbury, M. Worswick, D. Lloyd, M. Finn, "High strain rate tensile testing of automotive aluminum alloy sheet", Int. J. Impact Eng., Vol. 32, No. 1, 2005, pp. 541-560.
