On flux effects in a low alloy steel from a Swedish reactor pressure vessel

被引：8

作者：

Boasen, Magnus ^{[1
]}

Efsing, Pal ^{[1
]}

Ehrnsten, Ulla ^{[2
]}

机构：

[1] Royal Inst Technol KTH, Dept Solid Mech, SE-10044 Stockholm, Sweden

[2] VTT Tech Res Ctr Finland Ltd, POB 1000, FI-02044 Espoo, Finland

来源：

JOURNAL OF NUCLEAR MATERIALS | 2017年 / 484卷

关键词：

ATOM-PROBE TOMOGRAPHY; MICROSTRUCTURAL EVOLUTION; RPV MATERIALS; MONTE-CARLO; IRRADIATION; EMBRITTLEMENT; CLUSTERS; FE;

D O I：

10.1016/j.jnucmat.2016.11.026

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This study aims to investigate the presence of Unstable Matrix Defects in irradiated pressure vessel steel from weldments of the Swedish PWR Ringhals 4 (R4). Hardness tests have been performed on low flux (surveillance material) and high flux (Halden reactor) irradiated material samples in combination with heat treatments at temperatures of 330, 360 and 390 degrees C in order to reveal eventual recovery of any hardening features induced by irradiation. The experiments carried out in this study could not reveal any hardness recovery related to Unstable Matrix Defects at relevant temperatures. However, a difference in hardness recovery was found between the low and the high flux samples at heat treatments at higher temperatures than expected for the annihilation of Unstable Matrix Defects the observed recovery is here attributed to differences of the solute clusters formed by the high and low flux irradiations. (C) 2016 Elsevier B.V. All rights reserved.

引用

页码：110 / 119

页数：10

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