The effects of phase stability on void swelling in P,Ti-modified 316 stainless steels during neutron irradiation

被引：7
|
作者：
Ukai, S [1 ]
Akasaka, N [1 ]
Hattori, K [1 ]
Onose, S [1 ]
机构：
[1] Power Reactor & Nucl Fuel Dev Corp, Oarai Engn Ctr, Fuels & Mat Div, Oarai, Ibaraki 31113, Japan
来源：
EFFECTS OF RADIATION ON MATERIALS: 18TH INTERNATIONAL SYMPOSIUM | 1999年 / 1325卷
关键词：
316 stainless steel; JOYO; microstructure change; irradiation; void; M6C; G-phase; phosphide; phase instability; dislocation;
D O I：
10.1520/STP13905S
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
Commercially developed 20 % cold-worked P,Ti-modified 316 stainless steel claddings were irradiated as fuel pins in C-type irradiation rigs of JOYO under typical fast reactor conditions. The microstructural changes of irradiated claddings at temperatures around 500 degrees C were extensively analyzed using transmission electron microscopy. Void formation is closely related with M6C and G-phase precipitates and concomitant phosphide dissolution beyond the fast neutron fluence of 15x10(26) n/m(2). Such phase instability in the fuel pin cladding during the fast reactor operation is caused by the radiation induced solute segregation, and it mainly interpreted in terms of varying system sink strength due to dislocation and precipitate changes.
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页码：808 / 821
页数：14
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