Development and Determination of the Age Hardening Characteristics of Al-2.00Mg-2.66Si Wrought Alloy

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Ihom A.P. & Aniekan Offiong (2016). Development and Determination of the Age Hardening Characteristics of Al-2.00Mg-2.66Si Wrought Alloy. Mechanics, Materials Science & Engineering, Vol 5. doi:10.13140/RG.2.1.1965.72073

Authors: Ihom A.P., Aniekan Offiong

ABSTRACT. The study, was carried out by developing the alloy using the foundry route of melting, alloying, and casting. The produced test samples were machined to produce test specimens which were subjected to precipitation hardening treatment. The test specimens were for impact and hardness test to inference the response of the developed alloy to age hardening treatment. The ageing temperature was 190oC, and the ageing time was from 1 -5 hrs. The control specimen was not age hardened and when compared with the age hardened specimens, the tested mechanical properties of the age hardened specimens were better than the control specimen. The hardness was seen to increase, with ageing time peaking at 3hrs of ageing to a value of 38.34 HRB, dropped and rose after 4hrs of ageing and continued to increase, thereby prompting curiosity. The toughness had a steady increase as the ageing time was increased, which clearly showed that the developed alloy responded to age hardening treatment.

Keywords: precipitation hardening, characterization, solutionising, wrought alloy, development, determination

DOI 10.13140/RG.2.1.1965.7207


[1] Alo, O.A., Umolu, L.E., Ajao, J.A. and Oluwasegun, K.M. (2012) Thermal, Hardness and Microstructural Characterisation of Al-Si-SiCp Composites, JMMCE, 11(2), 159-168, doi: 10.4236/jmmce.2012.112013.

[2] Essien, E.V and Udo, U.E. (2016) Development and Determination of the Age Hardening Characteristics of Al–Mg-Si based Alloy, B.Eng. Degree project submitted to the Department of mechanical Engineering University of Uyo, Uyo-Nigeria.

[3] Hassan, S.B., Aponbiede, O. and Aigbodion, V.S. (2008) Precipitation Hardening Characteristics of Al-Si-Fe-/ SiC Particulate Composite, Journal of Alloys and Compounds, 466(1-2), 268-222.

[4] Hassan, S.B. and Aigbodion, V.S. (2009) The Effect of Thermal Ageing on Microstructure and Mechanical Properties of Al-Si-Fe/Mg Alloys, Journal of Alloys and Compounds, 486 (1-2), 309-314.

[5] Higgins, R.A. (1985) Properties of Engineering Materials, 6th Edition: Great Britain, Hodder and Stoughton Educational.

[6] Ihom, A.P., Nyior, G.B., and Zamanni, I.G. (2012) The Effect of Thermal Ageing on Microstructure and some Mechanical Properties of Al/2.0% Glass Reinforced Composite, IJRRAS 12(3), 1-6.

[7] Ihom, A.P., Nyior, G.B., Nor, I.J., Ogbodo, N.J. (2013) Investigation of Egg Shell Waste as an Enhancer in the Carburization of Mild Steel, AJMSE, 1(2), 29-33, doi: 10.12691/ajmse-1-2-3.

[8] Markson, I.E. (2016) The Effects of Pressure on Squeeze Cast Aluminium Alloys, PhD Degree Project Submitted to the Department of Mechanical Engineering, University of Uyo, Uyo-Nigeria.

[9] Martins, J.W. (1998) Precipitation Hardening, 2nd Edition, Butterworth Heinemann, Oxford, pp1-20.

[10] Matthews, F.L. and Rawlings, R.D. (2005) Composite Materials: Engineering and Science, 4th Edition, England: Woodhead Publishing Limited, pp.80-90.

[11] Shragger, A.M. (2008) Elementary Metallurgy and Metallography, Second Revised Edition Reprinted, Dover Publications Inc, Newyork, 136-140.

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