Inhibition of void dissolution by vacancies

被引：11

作者：

Estrin, Y ^{[1
]}

Gottstein, G

Shvindlerman, LS

机构：

[1] Univ Western Australia, Dept Mech & Mat Engn, Nedlands, WA 6907, Australia

[2] Rhein Westfal TH Aachen, Inst Met Kunde & Met Phys, D-52074 Aachen, Germany

[3] Russian Acad Sci, Inst Solid State Phys, Chernogolovka 142432, Moscow District, Russia

来源：

SCRIPTA MATERIALIA | 1999年 / 41卷 / 04期

关键词：

D O I：

10.1016/S1359-6462(99)00101-3

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Dissolution of voids is a classical problem in the theory of sintering. The essence of mechanism which inhibits processes associated with vacancy generation during grain growth, especially in fine grain sized materials is the rise of the free energy of the system in the course of defect `dissolution'. It takes the system a much larger time to remove the vacancies to the sinks. In an ensemble of voids with a size distribution, the void activity time t* between two successive arrests of dissolution will be different for voids of different radius. This will change the evolution of kinetics of an ensemble of voids and the void size distribution.

引用

页码：415 / 420

页数：6