Calculation of radiation-induced segregation near moving grain boundaries in Fe-Cr-Ni alloys

被引：2
|
作者：
Stepanov, IA [1 ]
Pechenkin, VA [1 ]
机构：
[1] SSC RF Inst Phys & Power Engn, RU-249020 Obninsk, Kaluga Region, Russia
来源：
INTERGRANULAR AND INTERPHASE BOUNDARIES IN MATERIALS, IIB98 | 1999年 / 294-2卷
关键词：
irradiation; ternary alloys; moving grain boundaries; segregation; Kirkendall effect; theory and modeling;
D O I：
10.4028/www.scientific.net/MSF.294-296.775
中图分类号：
TQ174 [陶瓷工业]; TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
A method of calculation of radiation-induced segregation (RIS) and segregation-induced bias (SIB) for a moving plane sink in ternary substitutional alloys is developed. lt is assumed that thermal equilibrium concentrations are maintained at the moving plane, which is considered as transparent to alloy component fluxes. Among various drift forces acting on point defects due to RIS, only Kirkendall ones are taken into account. RIS and SIE for a moving plane grain boundary in Fe-Cr-Ni alloys are calculated. It is shown that the dependence of SIE on dose has a maximum at some intermediate dose which depends on the sink velocity. The limiting case of a moving plane nontransparent for alloy component fluxes is also considered. In this case an additional sink velocity arises due to Kirkendall effect. This additional velocity is calculated in dependence on initial one.
引用
收藏
页码：775 / 778
页数：4
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