Molecular dynamics study of the nucleation rate of nanopores in aluminum at a negative pressure

31st International Conference on Equations of State for Matter

Voronin, D.S.^1 ; Krasnikov, V.S.^1 ; Mayer, A.E.^1

Chelyabinsk State University, Bratiev Kashirinykh Street 129, Chelyabinsk

454001, Russia^1

关键词: Homogeneous nucleation;    Meta-stable state;    Nano-voids;    Negative pressures;    Nucleation frequencies;    Nucleation rate;    Preexponential factor;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/774/1/012062/pdf
DOI  :  10.1088/1742-6596/774/1/012062

来源: IOP

【 摘 要 】

The rate of a homogeneous nucleation of nanovoids in expanded aluminum is researched in this work. Typical lifetime of the system in a metastable state at a negative pressure as well as coefficients of surface tension and nucleation frequency at the temperatures 300 and 500 K are obtained with the help of molecular dynamic simulation. The large value of the pre-exponential factor should be noted, which requires further detailed investigations.