Positron annihilation study of proton-irradiated reactor pressure vessel steels

被引：32

作者：

Liu, Xiangbing ^{[1
,2
]}

Wang, Rongshan ^{[1
]}

Ren, Ai ^{[1
]}

Huang, Ping ^{[1
]}

Wu, Yichu ^{[3
]}

Jiang, Jing ^{[3
]}

Zhang, Chonghong ^{[4
]}

Wang, Xitao ^{[2
]}

机构：

[1] Suzhou Nucl Power Res Inst, Ctr Plant Life Management, Suzhou 215004, Peoples R China

[2] Univ Sci & Technol Beijing, State Key Lab Adv Met & Mat, Beijing 100083, Peoples R China

[3] Wuhan Univ, Hubei Key Lab Nucl Solid State Phys, Sch Phys & Technol, Wuhan 430072, Peoples R China

[4] Chinese Acad Sci, Inst Modern Phys, Lanzhou 730000, Peoples R China

来源：

RADIATION PHYSICS AND CHEMISTRY | 2012年 / 81卷 / 10期

基金：

中国国家自然科学基金;

关键词：

Positron annihilation; Reactor pressure vessel steel; Proton irradiation; Defect; MODEL ALLOYS; DEFECTS; IRON; EVOLUTION; CORROSION; CLUSTERS; ELECTRON; BEAM; FE;

D O I：

10.1016/j.radphyschem.2012.05.014

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The microstructures, irradiation-induced defects and changes of mechanical property of Chinese domestic A508-3 steels after proton irradiation were investigated by TEM, positron lifetime, slow positron beam Doppler broadening spectroscopy and hardness measurements. The defects were induced by 240 keV proton irradiation with fluences of 1.25 x 10(17) ions cm(-2) (0.26 dpa). 2.5 x 10(17) ions cm(-2) (0.5 dpa), and 5.0 X 10(17) ions cm(-2) (1.0 dpa). The TEM observation revealed that the as-received steel had typical bainitic-ferritic microstructures. It was also observed that Doppler broadening S-parameter and average lifetime increased with dose level owing to the formation of defects and voids induced by proton irradiation. The correlation between positron parameters and hardness was found. (c) 2012 Elsevier Ltd. All rights reserved.

引用

页码：1586 / 1592

页数：7

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