GRAIN-BOUNDARY SEGREGATION AND GRAIN-BOUNDARY HETERODIFFUSION

被引：45

作者：

BOKSTEIN, BS

FRADKOV, VE

BEKE, DL

机构：

[1] RHEIN WESTFAL TH AACHEN, INST METALLKUNDE & MET PHYS, W-5100 AACHEN, GERMANY

[2] LAJOS KOSSUTH UNIV, DEPT SOLID STATE PHYS, H-4010 DEBRECEN, HUNGARY

[3] RENSSELAER POLYTECH INST, DEPT RES MAT, TROY, NY 12180 USA

来源：

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES | 1992年 / 65卷 / 02期

关键词：

D O I：

10.1080/01418619208201523

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

It is shown that nonlinear segregation effects (saturation, interaction of species) lead to nonlinear grain-boundary penetration plots. If the diffusion penetration depth is larger than a critical value, the concentration profiles become linear. The sign of the curvature and the deviation from a straight concentration profile depend on the segregation parameters (segregation energy, energy of mixing). As an illustration results of numerical calculations are presented and discussed.

引用

页码：277 / 286

页数：10

共 28 条

[1]

ARKHAROV VI, 1956, PHYS MET METALLOGR, V2, P379

[2]

BEKE DL, 1990, DEFECT DIFFUS FORUM, V66-9, P581

[3] CONNECTIONS BETWEEN THERMODYNAMIC QUANTITIES AND VACANCY AND DIFFUSION CHARACTERISTICS IN BINARY METALLIC SOLID-SOLUTIONS [J].