Effect of Severe Plastic Deformation on Microstructure and Properties of Polycrystalline Aluminium Al99.5

Open access

Abstract

Polycrystalline aluminium Al99.5 was deformed through the combination of equal-channel angular pressing (ECAP) by B route (4, 8 and 16 passes) and then by the hydrostatic extrusion (HE) using the cumulative way of deformation, just to the achieving the final wire diameter d = 3 mm. The microstructure of samples was investigated by means light microscopy (LM). Additionally the microhardness measurement and the tensile test were performed to determine the level of aluminium hardening. The texture was determined by using the Brucker Advance D8 equipment.

The aim of the research was to determine the influence of severe plastic deformation exerted in the process of equal-channel angular pressing (ECAP) and hydrostatic extrusion (HE) on the microstructure and properties of polycrystalline aluminium Al99.5.

The microstructure observations both after the HE process and the combination of ECAP + HE revealed the elongated to the extrusion direction grains and numerous bands and shear bands. The bands and shear bands most clearly revealed at the perpendicular section. The performed investigations showed that with the increase of the deformation the aluminium level hardening increase. The highest properties of tensile strength - UTS = 218 MPa and microhardness level HV0.1 = 46 were obtained after 8 ECAP + HE.

[1] V.M. Segal, Mat. Sci. Eng. A 197, 157 (1995).

[2] K.J. Kim, D.Y. Yang, J.W. Yoon, Mat. Sci. Eng. A 527, 7927 (2012).

[3] J. Richert, M. Richer t, Aluminium 62/8, 604 (1986).

[4] M. Richert, Archives of Materials Sciences 26/4, 235 (2005).

[5] T. Hebesberger, A. Vorhauer, H.P. Stuwe, R. Pippan, in M.J. Zehetbauer, R.Z. Valiev (Ed.), Influence of the processing parameters at High Pressure Torsion, Proceedings of the Conference ”Nanomaterials by Severe Plastic Deformation NANOSPD2”, Vienna, Austria (2002).

[6] M. Lewandowska, K.J. Kurzydłowski, Journal of Materials Science 43, 7299 (2008).

[7] L. Olejnik, M. Kulczyk, W. Pachla, A. Roso - chowski, International Journal of Material Forming 2, 621 (2009).

[8] K.J. Kurzydłowski, Materials Science Forum 503-504, 341 (2006).

[9] M.W. Richert, B. Leszczynska- Madej, W. Pachla, J. Skiba, Archives of Metallurgy 57/4, 911 (2012).

[10] B. Leszczynska- Madej, M. Richert, Ore metals R - 54/10, 619 (2009).

[11] M. Richert, J. Richert, A. Hotlos, W. Pachla, J. Skiba, Journal of Achievements in Materials and Manufacturing Engineering 44/1, 50 (2011).

[12] M. Kulczyk, W. Pachla, A. Swiderska- Sroda, N. Krasilnikov, R. Diduszko, A. Mazur, W. Lo - jkowski, K.J. Kurzydłowski, Solid State Phenomena 114, 51 (2006).

[13] K.T. Park, J. Kwon, W.J. Kim, Y.S. Kim, Materials Science and Engineering A316/145, 145 (2001).

Archives of Metallurgy and Materials

The Journal of Institute of Metallurgy and Materials Science and Commitee on Metallurgy of Polish Academy of Sciences

Journal Information


IMPACT FACTOR 2016: 0.571
5-year IMPACT FACTOR: 0.776

CiteScore 2016: 0.85

SCImago Journal Rank (SJR) 2016: 0.347
Source Normalized Impact per Paper (SNIP) 2016: 0.740

Cited By

Metrics

All Time Past Year Past 30 Days
Abstract Views 0 0 0
Full Text Views 143 138 9
PDF Downloads 63 61 5