Chemical segregation behavior under thermal aging of the low-activation F82H-modified steel

被引：27

作者：

Lapeña, J ^{[1
]}

Garcia-Mazario, M ^{[1
]}

Fernández, P ^{[1
]}

Lancha, AM ^{[1
]}

机构：

[1] CIEMAT, Mat Project, E-28040 Madrid, Spain

来源：

JOURNAL OF NUCLEAR MATERIALS | 2000年 / 283卷

关键词：

D O I：

10.1016/S0022-3115(00)00276-2

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

In this work, thermal aging of the low-activation F82H-modified steel has been performed at temperatures in the range 300-600 degreesC during periods up to 5000 h. A detailed mechanical and microstructural characterization has been carried out in the aged materials, as well as in the as-received state material for reference. Auger electron spectroscopy (AES) analysis has been performed for these materials to study the microchemistry at the grain boundaries. The results show a decrease of the impact properties after aging at 600 degreesC that has been related to the precipitation of the Laves phase. Auger analyses show chromium enrichment and iron depletion at grain boundaries in all material conditions. In addition, sulphur and tungsten have been observed by this technique at grain boundaries, their presence and distribution being dependent on the material state. (C) 2000 Elsevier Science B.V. All rights reserved.

引用

页码：662 / 666

页数：5

共 13 条

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[2]

Childs K.D., 1995, HDB AUGER ELECT SPEC, V3rd

[3] Microstructural characterisation of F82H-mod. steel using small-angle neutron scattering [J].