Investigation of the development of irradiation -: Induced precipitates in VVER-440-type reactor pressure vessel steels and weld metals after irradiation and annealing

被引：1

作者：

Grosse, M ^{[1
]}

Nitzsche, P ^{[1
]}

Böhmert, J ^{[1
]}

Brauer, G ^{[1
]}

机构：

[1] Rossendorf Inc, Res Ctr, Inst Safety Res, Neutron Embrittlement Div, D-01304 Dresden, Germany

来源：

EFFECTS OF RADIATION ON MATERIALS: 18TH INTERNATIONAL SYMPOSIUM | 1999年 / 1325卷

关键词：

pressure vessel steel; radiation hardening; embrittlement; annealing; small angle neutron scattering; anomalous small angle X-ray scattering; microstructure;

D O I：

10.1520/STP13874S

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The development of irradiation-induced precipitates in VVER-440 type reactor pressure vessel steels l5Kh2MFA and weld metals SV-10KhMFT during irradiation and post-irradiation annealing is studied by small angle neutron and X-ray scattering. The kinetic conditions for the precipitation of particles, which already exist in the unirradiated state, seem to be improved at temperatures of about 270 degrees C due to the irradiation. The size distribution of the irradiation-induced precipitates depends on the copper content and differs between weld and base metal. A strong correlation between the formation of irradiation-induced precipitates and the irradiation hardening is found. The hardness nearly linearly depends on the number of these precipitates.

引用

页码：346 / 362

页数：17

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