Precipitation kinetics of Al3Zr and Al3Sc in aluminum alloys modeled with cluster dynamics

Abstract

Precipitation kinetics of Al3Zr and Al3Sc in aluminum supersaturated solid solutions is studied using cluster dynamics, a mesoscopic modeling technique which describes the various stages of homogeneous precipitation by a single set of rate equations. The only parameters needed are the interface free energy and the diffusion coefficient which are deduced from an atomic model previously developed to study the same alloys. A comparison with kinetic Monte Carlo simulations based on the vacancy diffusion mechanism shows that cluster dynamics correctly predicts the precipitation kinetics provided a size dependent interface free energy is used. It also manages to reproduce reasonably well existing experimental data.

Acta Mater. (2005), in press

References in corpus (1)

• Nucleation of Al3Zr and Al3Sc in aluminum alloys: from kinetic Monte Carlo simulations to classical theory

Cited by in corpus (5)

• Complex Precipitation Pathways in Multi-Component Alloys
• Evolution of small defect clusters in ion-irradiated 3C-SiC: combined cluster dynamics modeling and experimental study
• Using Cluster Dynamics to Model Electrical Resistivity Measurements in Precipitating Al-Sc Alloys
• Cluster Dynamics Modeling of Niobium and Titanium Carbide Precipitates
• A Correlative Four-Dimensional Study of Phase Separation at the Subnanoscale to Nanoscale of a Ni-Al Alloy