using electron beam welding (EBW). By microstructural analysis and hardness test, the heat-
affected zone (HAZ) of F82H was classified into interlayer area, fine-grain area, and coarse-
carbide area. Post-weld heat treatment (PWHT) was applied to control the hardness of HAZ.
After PWHT at 680° C for 1 h, neutron irradiation at 300° C with a dose of 0.1 dpa was
carried out for the joint in Belgian Reactor II (BR-II). Compared to the base metals (BMs) and …