Effect of Neutron Irradiation on Strength of Electron Beam Welded Joint of JFMS for Fusion Reactor

Abstract

JFMS is a candidate material for nuclear fusion reactor in Japan. It is a material for high temperature use. Structural materials of fusion reactor will be exposed in neutron irradiation. In order to research the basic property of the material under irradiation, low temperature strength of JFMS and its electron beam welded joint is investigated under various irradiated condition in this experiment.
It was shown, as testing results, that decreasing of strength and elongation at low temperature of base metal and electron beam welded joint of JFMS increases with increasing of neutron fluence.