Nano Archive

Study of the developed precipitates in Al-0.63Mg-0.37Si-0.5Cu (wt.%) alloy by using DSC and TEM techniques

Gaber, A and Ali, A. Mossad and Matsuda, K and Kawabata, T and Yamazaki, T and Ikeno, S (2007) Study of the developed precipitates in Al-0.63Mg-0.37Si-0.5Cu (wt.%) alloy by using DSC and TEM techniques. Journal of Alloys and Compounds, 432 (1-2). 149 - 155.

Full text is not hosted in this archive but may be available via the Official URL, or by requesting a copy from the corresponding author.

Official URL: http://www.sciencedirect.com/science/article/B6TWY...

Abstract

Heat treatable Al–Mg–Si containing Cu alloys can be strengthened by the precipitation of the nano-scale metastable precipitates. In order to follow the precipitation sequence in balanced Al–1 mass%Mg2Si containing 0.5 mass%Cu during continuous heating, differential scanning calorimetry (DSC) was performed. Analysis of non-isothermal DSC scans at various heating rates were carried out to evaluate the overall activation energies associated with the precipitation processes and, therefore, the mechanism of the developed precipitates has been characterized. The most important developed precipitates that assist the strength of the alloy are random, Q′ and β′ precipitates. According to the obtained activation energies, the kinetics of the evolved Q′-precipitates could be controlled by the diffusion of Mg, Si and Cu in the crystal lattice of the alloy. Both conventional and high resolution transmission electron microscopy (HRTEM) were utilized to confirm the obtained results.

Item Type:Article
Uncontrolled Keywords:Precipitation kinetics
Subjects:Material Science > Nanochemistry
Material Science > Nanostructured materials
ID Code:4014
Deposited By:SPI
Deposited On:27 Mar 2009 09:32
Last Modified:27 Mar 2009 09:32

Repository Staff Only: item control page