Experimental Investigations of the Al 6082 Alloy Subjected to Equal-Channel Angular Pressing

Abstract:

The interest in bulk nanostructured materials (NSM), processed by methods of severe plastic deformation (SPD), is justified by their unique physical and mechanical properties. Equalchannel angular pressing (ECAP) is one of the methods of severe plastic deformation (SPD) that produces ultra fine-grained material. Due to the cyclic nature of the process, it is difficult to produce specimens with a high length to diameter ratio. Ratios of 6-7 have been reported in the literature to date. Longer specimens, however, are useful since the homogenous part is larger and the relative size of end effects is smaller. A new method was developed to obtain length to diameter ratios as high as 8-10. This new technique was developed using the multi-pass finite element simulation. The as-received alloy used in this study was the 6082 commercial Al-Mg-Si alloy. High strength and high ductility phenomenon that was found recently in materials after SPD were reached with the route C. The induced anisotropy of specimens after ECAP was monitored.

• Periodical: Materials Science Forum (Volumes 473-474)
• Pages: 129-134
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.473-474.129
• Online since: January 2005
• Authors: György Krallics, Dmitry Malgyn, Arpad Fodor
• Keywords: Ductility, Equal-Channel Angular Pressing (ECAP), High Length to Diameter Ratio, High-Strength

References

[1] R.Z. Valiev, R.K. Islamgaliev, I.V. Alexandrov, Progr. Mater. Sci. 2000, 45, pp.103-189.

[2] P.B. Berbon, N.K. Tsenev, R.Z. Valiev, M. Furukawa, Z Horita, M. Nemoto, T.G. Langdon, Metall. Mater. Trans. 1998, 29A, pp.2237-2243.

DOI: 10.1007/s11661-998-0101-6

[3] Y. Iwahashi, Z. Horita, M. Nemoto, T.G. Langdon, Metall. Mater. Trans. 1998, 29A, pp.2053-2510.

[4] Z. Horita, D. Smith, M. Nemoto, R.Z. Valiev, T.G. Langdon, Mater. Research Soc. 1998, 13, pp.446-450.

[5] P.B. Berbon, M. Furukawa, Z. Horita, M. Nemoto, N. K Tsenev, R.Z. Valiev, T.G. Langdon, Mater. Sci. 1996, 217-222, pp.1013-1018.

DOI: 10.4028/www.scientific.net/msf.217-222.1013

[6] J.Y. Suh, H.S. Kim, J.W. Park, J.Y. Chang, Scripta Mater. 44 (2001) pp.677-681.

[7] H.S. Kim, Mater. Sci. Eng., A315 (2001) pp.122-128.

[8] S.L. Semiatin, D.P. Delo, E.B. Shell, Acta Mater. 48 (2000) pp.1841-1851.

[9] D.P. Delo, S.L. Semiatin, Metallurgical and Material transaction A, 30A, (1999), pp.1391-1402.

[10] H.S. Kim, M.H. Seo, S.H. Hong, Mater. Sci. Eng., A291 (2000) pp.86-90.

[11] H.S. Kim, S.H. Hong, M.H. Seo ,J. Mater. Res., Vol. 16 Nr. 3 (2001) pp.856-864.

[12] H.S. Kim, M.H. Seo, S.H. Hong, J. Mat. Proc. Techn., 130-131, (2002) pp.497-503.

[13] S.J. Oh, S.B. Kang, Mater. Sci. Eng., A343 (2003), pp.107-115.

[14] J.R. Bowlen, A. Gholinia, S.M. Roberts, P.B. Prangnell, Mater. Sci. Eng., A287 (2000), pp.87-99.

[15] L. Zuyan, W. Zhongjin, J. Mat. Proc. Techn, 94 (1999) pp.193-196.

[16] Z.Y. Liu, Z. Wang, E. Wang, Mater. Sci. Eng., A262 (1999), pp.137-140.

[17] H.S. Kim, Mater. Sci. Eng, A328 (2002) pp.317-323.

[18] Gy. Krallics, Z. Szeles, D. Malgyn Materials Science Forum Vols. 414-415 (2003). pp.439-444.

[19] MSC. SuperForm Command Reference, Version 2002 (2001) MSC Software Corporation.

[20] R. Valiev, Adv. Eng. Mat., 5 (2003) No. 5, pp.296-300.

[21] R. Valiev, I.V. Alexandrov, Y.T. Zhu, T.C. Lowe, J. Mat. Res., Vol. 17, No. 1 (2002) pp.5-8.

[22] Y. Wang, M. Chen, F. Zhou, E. Ma, Nature Vol 419 (2002) pp.912-914.

[23] G. Krallics, D. Malgin, G.I. Raab, I.V. Alexandrov, Ultrafine Grained Materials III conference (2004).