Effect of Heat Treatment Combined with High Pressure Torsion Process on Microstructure and Hardness of AlMg5Si2Mn Alloy


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This study evaluated the effect of a heat treatment on the potential application of AlMg5Si2Mn die casting alloy as a substitute for wrought aluminium alloy products. The proposed heat treatment was intended to increase the workability of the AlMg5Si2Mn alloy, which is typically not malleable due to the presence of interconnected brittle phases. By disintegrating interconnected eutectic Mg2Si phases into fragmented particles and dissolving Mg-rich phases the workability was increased. Subsequently, heat treated samples were subjected to high-pressure torsion process. The microstructure of the heat treated and deformed samples were characterized using light and electron microscope. Hardness measurements were used to investigate the influence the number of HPT revolutions on mechanical properties.



Solid State Phenomena (Volume 275)

Edited by:

Prof. Tomasz Tański and Przemysław Snopiński




P. Snopiński and T. Tański, "Effect of Heat Treatment Combined with High Pressure Torsion Process on Microstructure and Hardness of AlMg5Si2Mn Alloy", Solid State Phenomena, Vol. 275, pp. 89-99, 2018

Online since:

June 2018




[1] Y. Estrin, M. Murashkin, R. Valiev. Ultrafine-grained aluminium alloys: Processes, structural features and properties. Fundam. Alum. Metal.l Prod. Process. Appl. 2010. p.468–503.

DOI: https://doi.org/10.1533/9780857090256.2.468

[2] G.J. Fan, G.Y. Wang, H. Choo, P.K. Liaw, Y.S. Park, B.Q. Han BQ, et al. Deformation behavior of an ultrafine-grained Al-Mg alloy at different strain rates. Scr. Mater. 52 (2005) 929–33.

DOI: https://doi.org/10.1016/j.scriptamat.2004.12.028

[3] B.Q. Han, E.J. Lavernia. High-temperature behavior of a cryomilled ultrafine-grained Al-7.5% Mg alloy. Mater Sci Eng A. 410–411 (2005) 417–21.

DOI: https://doi.org/10.1016/j.msea.2005.08.046

[4] B.O. Han, F. Mohamed, Z. Lee, S.R. Nutt, E.J. Lavernia. Mechanical properties of an ultrafine-grained Al-7.5 Pct Mg alloy. Metall. Mater. Trans. A. 34 (2003) 603–13.

DOI: https://doi.org/10.1007/s11661-003-0095-z

[5] R. Kapoor, J. B. Singh, J. K. Chakravartty High Strain Rate Behavior of Ultrafine-Grained Al-1.5 Mg., Mater. Sci. Eng. A. 496 (2008) 308–15.

DOI: https://doi.org/10.1016/j.msea.2008.05.043

[6] M. Król, T. Tański, P. Snopiński, B. Tomiczek. Structure and properties of aluminium–magnesium casting alloys after heat treatment. J. Therm. Anal. Calorim. 127 (2017)299–308.

DOI: https://doi.org/10.1007/s10973-016-5845-4

[7] R.Z. Valiev, N.A. Enikeev, M.Y. Murashkin, V.U. Kazykhanov, X. Sauvage . On the origin of the extremely high strength of ultrafine-grained Al alloys produced by severe plastic deformation. Scr. Mater. 63 (2010_949–52.

DOI: https://doi.org/10.1016/j.scriptamat.2010.07.014

[8] R.Z. Valiev, M.Y. Murashkin, B. Straumal, Enhanced Ductility in Ultrafine-Grained Al Alloys Produced by SPD Techniques. Mater. Sci. Forum. 633–634 (2009) 321–32.

DOI: https://doi.org/10.4028/www.scientific.net/msf.633-634.321

[9] T. Tański, P. Snopińsk, K. Prusik, M. Sroka, The effects of room temperature ECAP and subsequent aging on the structure and properties of the Al-3%Mg aluminium alloy, Mater. Charact. 133 (2017) 185-195.

DOI: https://doi.org/10.1016/j.matchar.2017.09.039

[10] M. Król, T. Tański, G. Matula, P. Snopiński, A.E. Tomiczek., Analysis of Crystallization of Cast Magnesium Alloys Based on Thermal Derivative Analysis, Arch. Metall. Mater. 60 (2015) 2993-3000.

DOI: https://doi.org/10.1515/amm-2015-0478

[11] O. Hilšer, S. Rusz, T. Tański, P. Snopiński, J. Džugan, M. Kraus. Mechanical properties and structure of AZ61 magnesium alloy processed by equal channel angular pressing. IOP Conf. Ser. Mater. Sci. Eng. (2017).

DOI: https://doi.org/10.1088/1757-899x/179/1/012028

[12] Y.S. Lee, J.H. Cha, S.H. Kim, C.Y. Lim, H.W. Kim. Effect of pre-homogenization deformation treatment on the workability and mechanical properties of AlMg5Si2Mn alloy. Mater. Sci. Eng. A. 685 (2017) 244–52.

DOI: https://doi.org/10.1016/j.msea.2016.12.107

[13] A. Malekan, M. Emamy, J. Rassizadehghani, A.R. Emami, The effect of solution temperature on the microstructure and tensile properties of Al–15%Mg2Si composite, Mater. Des. 32 (2011) 2701-2709.

DOI: https://doi.org/10.1016/j.matdes.2011.01.020

[14] M. Emam, A.R. Emami, K. Tavighi, The effect of Cu addition and solution heat treatment on the microstructure, hardness and tensile properties of Al–15%Mg2Si–0.15%Li composite, Mater. Sci. Eng. A. 576 (2013) 36-44.

DOI: https://doi.org/10.1016/j.msea.2013.03.066

[15] M. Król, P. Snopiński, B. Tomiczek, T. Tański, W. Pakieła, W. Sitek, Structure and properties of an Al alloy in as-cast state and after laser treatment, Proc. Est. Acad. Sci. 65 (2016) 107.

DOI: https://doi.org/10.3176/proc.2016.2.07

[16] A.H. Shafieizad, A. Zarei-Hanzaki, H.R. Abedi, K.J. Al-Fadhalah, The Mg2Si phase evolution during thermomechanical processing of in-situ aluminum matrix macro-composite, Mater. Sci. Eng. A. 644 (2015) 310-317.

DOI: https://doi.org/10.1016/j.msea.2015.07.060

[17] Ch. Xu, Z. Horita, T.G. Langdon, The evolution of homogeneity in processing by high-pressure torsion, Acta Mater. 55 (2007) 203-212.

DOI: https://doi.org/10.1016/j.actamat.2006.07.029

[18] I.F. Mohamed, Y. Yonenaga, S. Lee, K. Edalati, Z. Horita, Age hardening and thermal stability of Al–Cu alloy processed by high-pressure torsion, Mater. Sci. Eng. A. 627 (2015) 111-118.

DOI: https://doi.org/10.1016/j.msea.2014.12.117