Ostwald ripening with non-equilibrium vacancies

被引：23

作者：

Gusak, AM

Lutsenko, GV

Tu, KN

机构：

[1] Cherkasy Natl Univ, Dept Theoret Phys, UA-18027 Chernovtsy, Ukraine

[2] Cherkasy Natl Univ, Lab Solid State Modeling, UA-18027 Chernovtsy, Ukraine

[3] Univ Calif Los Angeles, Dept Mat Sci & Engn, Los Angeles, CA USA

来源：

ACTA MATERIALIA | 2006年 / 54卷 / 03期

关键词：

diffusion; coarsening; vacancies; mean-field theory;

D O I：

10.1016/j.actamat.2005.09.035

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Ripening in non-dilute binary solutions is analyzed by taking into account the influence of non-equilibrium vacancies, generated by non-equal intrinsic fluxes of the components. A mathematical model has been developed for both coherent and incoherent precipitates. In the case of coherent precipitates the ripening kinetics demonstrates three stages, with the second stage characterized by a time exponent closer to 1/2 than to 1/3. The standard deviation of the particle size distribution is larger than that for a Lifshitz-Slyozov-Wagner distribution. (c) 2005 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：785 / 791

页数：7

共 10 条

[1]

Ardell A. J., 1988, Phase Transformations '87. Proceedings of the Conference, P485

[2]

BARDEEN J, 1949, J PHYS REV, V1, P1403

[3]

GUROV KP, 1985, FIZ MET METALLOVED+, V59, P1062

[4]

GUSAK AM, 1989, FIZ MET METALLOVED+, V68, P481