Study of precipitation kinetics in Al-3.7 wt% Cu alloy during non-isothermal and isothermal ageing
Fatmi, Messaoud; Ghebouli, Brahim; Ghebouli, Mohamed Amine; Chihi, Tayeb; Ouakdi, El Hadj; Heiba, zein Elabidin;
Abstract
Studies of transformation kinetics during ageing of Al-3.7 wt% Cu were performed by use of X-ray diffraction and Differential Scanning Calorimetry (DSC) methods at different heating rates. Both non-isothermal and isothermal ageing processes were conducted in order to determine the isothermal transformation kinetics based on the JMA (Johnson-Mehl-Avrami) equation and the Avrami exponent, n, whose mean is ~ 1:78. The frequency factor calculated by the isothermal treatment is ~ 1:65×106 s-1. The activation energy of discontinuous precipitation has been calculated according to the three models proposed by Kissinger, Ozawa, and Boswell. © 2013 The Physical Society of the Republic of China.
Other data
| Title | Study of precipitation kinetics in Al-3.7 wt% Cu alloy during non-isothermal and isothermal ageing | Authors | Fatmi, Messaoud; Ghebouli, Brahim; Ghebouli, Mohamed Amine; Chihi, Tayeb; Ouakdi, El Hadj; Heiba, zein Elabidin | Issue Date | 1-Jan-2013 | Journal | chinese Journal of Physics | Volume | 51 | Issue | 5 | Start page | 1019 | End page | 1032 | ISSN | 05779073 | DOI | 10.6122/CJP.51.1019 | Scopus ID | 2-s2.0-84894627188 |
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