High-dose neutron induced radiation swelling simulated by heavy ion irradiation and its microscopic study with positron annihilation technique

AHMAT Polat，

FAN Zhi-Guo，

LUO Qi，

ZHENG Sheng-Nan，

GOU Zheng-Hui，

LI An-Li，

RUAN Yu-Zhen，

ZHU Sheng-Yun

Nuclear Science and Techniques

Vol.11, No.1

pp.52-55

Published in print 01 Feb 2000

CLC：TL341, TL352.2+8, O59

23300

70 MeV-carbon-ion irradiation is used to simulate the radiation swelling induced by neutron irradiation of 3.2×10²² n•cm^-2 in domestically-made 316 austenitic stainless steels modified by a 20%-cold-working and Ti-adding from room temperature to 802℃. The created swelling is microscopically examined by the positron annihilation lifetime technique. A radiation swelling peak is observed at 580℃ and the corresponding void has an average diameter of 0.7nm which is hardly probed by macroscopic methods.

Stainless steelRadiation swellingHeavy ion irradiation simulationPositron annihilation lifetime technique

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