Positron annihilation lifetime study of JRQ and JPA irradiated and annealed reactor pressure vessel steels

被引：2

作者：

Pecko, Stanislav ^{[1
]}

Petriska, Martin ^{[1
]}

Sojak, Stanislav ^{[1
]}

Slugen, Vladimir ^{[1
]}

机构：

[1] Slovak Univ Technol Bratislava, Inst Nucl & Phys Engn, Ilkovicova 3, Bratislava 81219, Slovakia

来源：

PROGRESS IN NUCLEAR ENERGY | 2016年 / 87卷

关键词：

Positron annihilation spectroscopy; Reactor pressure vessel; Annealing; JRQ; JPA; MOSSBAUER-SPECTROSCOPY; MODEL ALLOYS; RPV STEELS;

D O I：

10.1016/j.pnucene.2015.11.001

中图分类号：

TL [原子能技术]; O571 [原子核物理学];

学科分类号：

0827 ; 082701 ;

摘要：

The model reactor pressure vessel steels known as JRQ and JPA were manufactured in Japan for the IAEA neutron embrittlement research studies. These model alloys belong to the commercially used steel A533B-1 type and show relatively large changes in mechanical properties after relevant neutron irradiation. The neutron irradiation was performed by different neutron fluxes as well as different neutron fluences (up to about 150 x 10(18) cm(-2) (E > 0.5 MeV)). For a better understanding of the neutron embrittlement, the Positron Annihilation Lifetime Spectroscopy (PALS) technique was applied in 2014. PALS measurement of irradiated specimens was performed using three detectors set-up due to induced Co-60 radioactivity of the studied specimens. We confirmed that the JPA steel, considered to be high-copper steel, is much more sensitive to defect creation due to neutron irradiation than the low-copper JRQ steel. (C) 2015 Elsevier Ltd. All rights reserved.

引用

页码：15 / 19

页数：5