Open AccessEffect of the supersaturation on the precipitation kinetics of the Guinier-Preston zones in Al-rich Ag alloys
Author(s) -
Sabah Senouci,
Azzeddine Abderrahmane Raho
Publication year - 2017
Publication title -
aims materials science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.367
H-Index - 16
eISSN - 2372-0484
pISSN - 2372-0468
DOI - 10.3934/matersci.2017.1.137
Subject(s) - supersaturation , supercooling , kinetics , precipitation , alloy , materials science , thermodynamics , chemical engineering , crystallography , chemical physics , chemistry , metallurgy , meteorology , physics , quantum mechanics , engineering
The precipitation kinetics of the GP zones in a supersaturated solid solution depends on the level of its supersaturation which induces a driving force. The magnitude of this driving force increases with the increasing of the undercooling and the increasing of the solute supersaturation. At a given temperature, the increasing of the supersaturation accelerates the precipitation of the GP zones. In an Alxat.%Ag alloy, the transformation kinetics depends on the contribution of the driving force and on that of the thermal activation which is preponderant