Equilibrium grain boundary solute segregation accelerated by irradiation-created Frenkel pairs

被引：0

作者：

Faulkner, RG

Song, SH

Flewitt, PEJ

机构：

[1] Loughborough Univ Technol, Inst Polymer Technol & Mat Engn, Loughborough LE11 3TU, Leics, England

[2] Magnox Elect PLC, Berkeley Technol Ctr, Berkeley GL13 9PB, Glos, England

来源：

DEFECT AND DIFFUSION FORUM | 1999年 / 166卷

关键词：

irradiation; grain boundary; segregation; Frenkel pairs; diffusion;

D O I：

暂无

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

As a complement to modelling of irradiation-induced non-equilibrium segregation, equilibrium grain boundary segregation of phosphorus in alpha-Fe is evaluated under neutron irradiation. Neutron irradiation creates excess point defects in alloys by production of Frenkel pairs, i.e., vacancies and interstitials. The interstitials include self-interstitials (formed by matrix atoms) and solute-interstitials (formed by solute atoms). Both excess vacancies and solute-interstitials may enhance solute diffusion so as to promote the kinetic process of equilibrium segregation. This effect is especially noticeable in the low temperature range.

引用

页码：21 / 28

页数：8

共 27 条

[1] Solute segregation in dilute bcc alloys under irradiation [J].

Barbu, A ;

Lidiard, AB .

PHILOSOPHICAL MAGAZINE A-PHYSICS OF CONDENSED MATTER STRUCTURE DEFECTS AND MECHANICAL PROPERTIES, 1996, 74 (03) :709-722

[2]

Briant C. L., 1978, International Metals Reviews, V23, P164

[3] SINK STRENGTHS FOR THIN-FILM SURFACES AND GRAIN-BOUNDARIES [J].

BULLOUGH, R ;

HAYNS, MR ;

WOOD, MH .

JOURNAL OF NUCLEAR MATERIALS, 1980, 90 (1-3) :44-59

[4]

CAHN RW, 1983, PHYSICAL METALLURGY, P1189

[5]

DONNAY JDH, 1973, CRYSTAL DATA DETERMI, V2, pC1

[6]

Dumoulin P., 1980, Metal Science, V14, P1, DOI 10.1179/030634580790438163

[7] COMBINED GRAIN-BOUNDARY EQUILIBRIUM AND NONEQUILIBRIUM SEGREGATION IN FERRITIC MARTENSITIC STEELS [J].

FAULKNER, RG .

ACTA METALLURGICA, 1987, 35 (12) :2905-2914

[8]

Faulkner RG, 1997, J MATER SCI LETT, V16, P1191, DOI 10.1007/BF02765407

[9] A model describing neutron irradiation-induced segregation to grain boundaries in dilute alloys [J].

Faulkner, RG ;

Song, SH ;

Flewitt, PEJ .

METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, 1996, 27 (11) :3381-3390

[10]

FAULKNER RG, IN PRESS J NUCL MAT

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