Plasma and Fusion Research

Volume 11, 2405007 (2016)

Regular Articles

Correlation of Microstructural Evolution in V-4Cr-4Ti by Heavy Ion and Neutron Irradiations
Takeo MUROGA, Takeshi MIYAZAWA, Takuya NAGASAKA and Hideo WATANABE1)
National Institute for Fusion Science, Toki, Gifu 509-5292, Japan
1)Research Institute for Applied Mechanics, Kyushu University, Kasuga, Fukuoka 816-8580, Japan
(Received 19 November 2015 / Accepted 28 December 2015 / Published 24 February 2016)

Abstract

The evolution of interstitial dislocation loops in V-4Cr-4Ti during heavy ion and neutron irradiation was investigated in comparison with that during electron irradiation at temperature ranging from 407 K to 673 K. Temperature and damage rate dependence of the loop number density by heavy ion and neutron irradiations agreed well with those by electron irradiation obeying Sink and Recombination Dominant kinetics at low and high temperature, respectively. Heavy ion and neutron irradiations induced higher loop number density than that of electron irradiation at 563 - 673 K. The difference may be attributed to cascade-enhanced vacancy loop formation.

Keywords

vanadium alloy, irradiation embrittlement, dislocation loop, irradiation correlation

DOI: 10.1585/pfr.11.2405007

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