DSC study on phase transitions and their correlation with properties of overaged Al-Zn-Mg-Cu alloys
DSC study on phase transitions and their correlation with properties of overaged Al-Zn-Mg-Cu alloys
This article investigates the phase transitions of complex quaternary Al-Zn-Mg-Cu alloys with Zr addition at overaged conditions. Differential scanning calorimetry (DSC) is employed to quantitatively analyze the phase transformation phenomena of a wide range of 7xxx series alloys through endothermic and exothermic reactions. The DSC observations detailing heat effect peaks and thermal parameters of ?? dissolution contain valuable information on the presence of equilibrium phases and the optimum alloying element contents. Based on DSC experimental data and phase diagrams, the balance of critical properties such as strength and electrical conductivity of Al-Zn-Cu-Mg 7xxx series alloys has been studied by considering the formation, dissolution, and incipient melting of S and T phase, dissolution of ?? phase as well as the formation of ? phase. Nine Al-Zn-Mg-Cu alloys have been studied through microstructural examination and detailed DSC analysis. The correlation between the properties and the DSC data of the selected alloys has been analyzed
977-984
Li, X.M.
e6343471-9722-407a-8bea-5b9a6bbf2d78
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
2012
Li, X.M.
e6343471-9722-407a-8bea-5b9a6bbf2d78
Starink, M.J.
fe61a323-4e0c-49c7-91f0-4450e1ec1e51
Li, X.M. and Starink, M.J.
(2012)
DSC study on phase transitions and their correlation with properties of overaged Al-Zn-Mg-Cu alloys.
Journal of Materials Engineering and Performance, 21, .
(doi:10.1007/s11665-011-9973-5).
Abstract
This article investigates the phase transitions of complex quaternary Al-Zn-Mg-Cu alloys with Zr addition at overaged conditions. Differential scanning calorimetry (DSC) is employed to quantitatively analyze the phase transformation phenomena of a wide range of 7xxx series alloys through endothermic and exothermic reactions. The DSC observations detailing heat effect peaks and thermal parameters of ?? dissolution contain valuable information on the presence of equilibrium phases and the optimum alloying element contents. Based on DSC experimental data and phase diagrams, the balance of critical properties such as strength and electrical conductivity of Al-Zn-Cu-Mg 7xxx series alloys has been studied by considering the formation, dissolution, and incipient melting of S and T phase, dissolution of ?? phase as well as the formation of ? phase. Nine Al-Zn-Mg-Cu alloys have been studied through microstructural examination and detailed DSC analysis. The correlation between the properties and the DSC data of the selected alloys has been analyzed
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e-pub ahead of print date: 17 May 2011
Published date: 2012
Organisations:
Engineering Mats & Surface Engineerg Gp
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Local EPrints ID: 210954
URI: http://eprints.soton.ac.uk/id/eprint/210954
ISSN: 1059-9495
PURE UUID: 0eab124c-1640-4a61-9934-599702232532
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Date deposited: 16 Feb 2012 14:40
Last modified: 14 Mar 2024 04:51
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Author:
X.M. Li
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