Dear Dr. Hossein Kheirabadi ,

there is little bibliography relative to the topic you indicated; I hope the following papers will be of help to you:

-Effects of ageing time on the mechanical and conductivity properties for various round bar diameters of AA 2219 Al alloy

T. Ram Prabhu

Engineering Science and Technology

Volume 20, Issue 1, Pages 133-142 (2017)

Available at: https://www.sciencedirect.com/science/article/pii/S2215098616302361

-Corrosion of Aluminium

By Christian Vargel

Elsevier Science - ISBN 978-0-08-044495-6 - 2004

Chapter B.2 -Types of Corrosion on Aluminium

Christian Vargel, http://www.corrosion-aluminium.com

2.3.1 Origins of intercrystalline corrosion

-Heat Treating of Aluminum Alloys

ASM Handbook, Vol. 4: Heat Treating ASM Handbook Committee, p 841-879 (1991)

DOI: 10.1361/asmhba0001205

Available at: https://materialsdata.nist.gov/bitstream/handle/11115/192/Heat%20Treating%20of%20Aluminum%20Alloys.pdf?sequence=3&isAllowed=y

Best regards, Pierluigi Traverso

Residual stress magnitudes are a consequence of hardening precipitation that occurs during quenching which allows a greater elastic stress to be supported.

Dear Abdulwahab Hassan Khuder I think that there is two-source to residual stresses after precipitation hardening:

1- the temperature gradient

2- the precipitants formation

and I'm looking for the second one and its fraction of the total residual stresses that exist after heat treatment.

Dear Hossein Kheirabadi,

I would like to suggest you article: J.E.Wyatt, J.T.Berry, A.R.Williams, Residual stresses in aluminum castings, Journal of Materials Processing Technology 191 (2007) 170-173.

Best regards,

Gedvidas Bikulcius