A Calorimetric Study on the Precipitation of T1 Phase during the Ageing of an Al-Li-Cu-Zr Alloy |
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| Journal | Defect and Diffusion Forum (Volumes 273 - 276) |
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| Volume | Diffusion in Solids and Liquids III |
| Edited by | Andreas Öchsner and Graeme E. Murch |
| Pages | 14-17 |
| DOI | 10.4028/www.scientific.net/DDF.273-276.14 |
| Citation | Shahram Ahmadi et al., 2008, Defect and Diffusion Forum, 273-276, 14 |
| Online since | February, 2008 |
| Authors | Shahram Ahmadi, Ali Shokuhfar, M.R. Abotalebi, Arash Rezaei |
| Keywords | Activation Energy, Aluminium-Lithium (Al-Li) Alloy, Differential Scanning Calorimetric, GP Zone |
| Abstract | The precipitation of T1 phase during the ageing of an Al- Li- Cu -Zr alloy sheet was studied by DSC (Differential Scanning Calorimetric) technique. Results showed that precipitation of T1 phase occurred in temperature range of 250ºC to 300ºC whereas its dissolution occurred within the temperature of 450ºC to 530ºC. Furthermore, activation energies for precipitation and dissolution of T1 phase were determined 122.1 kJ/mol and 130.3 kJ/mol, respectively. |
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