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The kinetics of precipitation in Al-2.4 wt% Cu alloy by Kissinger, Ozawa, Bosswel and Matusita methods |
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| Authors: | M Fatmi B GhebouliT Chihi M Abdul Hafiz |
| Institution: | a LP3M Laboratory, University Ferhat Abbas, Setif 19000, Algeria b Laboratory of Studies of Surfaces and Interfaces of Solids Materials, University Ferhat Abbas, Setif 19000, Algeria c Department of Physics, Universitary Center, Bordj-Bou-Arreridj 34000, Algeria d ENMC Laboratory, Department of Physics, Faculty of Sciences, University Ferhat Abbas, Setif 19000, Algeria e Department of Physics, Faculty of Sciences, Damascus University, Syria |
| Abstract: | The isothermal and non-isothermal ageing of an Al-2.4 wt% Cu alloy have been studied using X-ray diffraction analysis and differential scanning calorimetry (DSC) at different heating rates. Quantitative metallography methods have been applied to measure the corresponding transformed volume fractions at various temperatures and times of precipitation. The variation of the heating rate using DSC technique has allowed us to calculate two kinetics parameters of precipitation which are the Avrami exponent and the activation energy of the process using Kissinger, Ozawa and Bosswell methods. These parameters are similar to those found for the precipitation reaction of θ′ and θ (Al2Cu) phases. |
| Keywords: | Al-Cu alloys Kinetics Index Avrami Activation energy |
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