Influence of Plastic Deformation on the Properties of 6066 Heat Treatable Aluminum Alloys

Emad Abdelraouf BADAWI, Mmdouh ABDEL-NASER, Alaa Aldeen AHMED


The aims of this work are to (1) study the influence of plastic deformation on the properties of 6066 aluminum alloy; (2) study the effect of deformation on the age hardening of these alloys; (3) study the recovery of these defects from the samples. These effects were investigated in terms of microstructure using positron annihilation spectroscopy (PAS) analysis and mechanical properties by hardness measurements. Dislocations facilitate nucleation of precipitates. At first sight, deformed specimens had lower hardness as compared to non-deformed ones, and as the deformation increase, the hardness decreases. Another output of the mechanical test was the increase in hardness in the specimens after artificial aging with an increase in percent deformation.


Plastic deformation, age hardening, aluminum alloys, HV values, positron annihilation lifetime spectroscopy

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A Dupasquier, P Hautogarvi and MJ Manninen. Positrons in Solids. Springer, Berlin, 1979.

P Hautojsrvi. Positrons in Solids. Springer, Berlin, 1979.

W Brandt and A Dupasquier. Positron Solid-State Physics. North Holland, Amsterdam, 1983.

A Dupasquier and AP Mills. Positron Spectroscopy of Solids. North-Holland, Amsterdam, 1994.

M Eldrup. In: AV Chadwick and M Terenzi (eds.). Defects in solids. Plenum, New York, 1986, p. 145.

M Eldrup. Calculation of the lifetime of positronium in polymers via molecular dynamics simulations. J. Phys. 1995; 5, 93.

MJ Puska and RM Nieminen. Theory of positrons in solids and on solid surfaces. Rev. Mod. Phys. 1994; 66, 841-97.

Miutary Standardization Hand Book (Aluminum and Aluminum Alloys), MI1-HDBK-694A (MR) 15 December 1966.

LP Troeger and EA Starke. Microstructural and mechanical characterization of a superplastic 6xxx aluminum alloy. Mater. Sci. Eng. 2000; 277, 102-13.

K Matsuda, D Teguri, Y Uetani, T Sato and S Ikeno. Cu-Segregation at the Q/α-Al interface in Al-Mg-Si-Cu alloy. Script. Mater. 2002; 47, 833-7.

E Tan and B Ogel. Influence of heat treatment on the mechanical properties of AA6066 alloy. Turk. J. Eng. Env. Sci. 2007; 31, 53-60.

JH Crawford. Point defects in Solids. Plenum Publishing Corporation, New York, 1975.

MA Abdel-Rahman, MS Abdallah and EA Badawi. Study of trapping rate and defect density in AlSi11.35Mg0.23 by positron annihilation technique. Surf. Rev. Lett. 2004; 11, 427-32.

MA Abdel-Rahman, MS Abdallah and EA Badawi. Energies 0.16 and 0.53 ev for dislocation recovery in AlSi11.35Mg0.23 by positron lifetime. Surf. Rev. Lett. 2005; 12, 519-22.

P Kirkegaard, M Eldrup, O Mogensen and N Pedersen. Program system for analyzing positron life time spectra and angular correlation curves. Comp. Phys. Commun. 1981; 23, 307-35.


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