Abstract
The material design of the IFMIF liquid lithium pipe in Japan consists of SUS316L. SUS316L part of the liquid lithium pipe is welded with the target assembly made of SUSU316L. Since the target assembly is operating under a high temperature and strength neutron irradiation condition (50 dpa / year), it is important to perform mechanical tests for these welds in engineering design of IFMIF. This research tested the high temperature materials properties and evaluated basic material properties of the weld. I did not find any harmful weld defect in the weld. In hardness test, the distribution of different hardness was shown by welding speed. In High Temperature Tensile Test, the tensile properties of the weld were equal to a base metal. In High Temperature Fatigue Test, The fatigue limit became 280 MPa.
