Corrosion behavior of CLAM steel weldment in flowing liquid Pb-17Li at 480 °C

Compatibility of CLAM steel weldments with static LiPb alloy at 550°C

“…Martensite and LiH can be observed on the surface. LiH may occur due to the possible existence of H in liquid LiPb [13,14]. In the welded area, the reaction Li + H + E → LiH may take place on the corrosion surface, which is similar to the behavior of weldments in flowing liquid LiPb [14].…”

“…Cr depleted zones surrounding martensitic laths and at grain boundaries can be preferentially corroded which has been elaborated in the theory of easily corroded areas in Ref. [14]. Refs.…”

“…The weight loss is large in the early stage of corrosion, which indicates a high corrosion rate, but the corrosion rate decreases with increasing corrosion time. The change in corrosion rate can be explained by the existence of easily corroded areas on the surfaces [14]. Table 1 shows the corrosion properties of CLAM steel base and weld areas at different operation conditions.…”

Long-term corrosion behavior of martensitic steel welds in static molten Pb–17Li alloy at 550°C

“…12. High energy locations between the individual laths as well as sharp compositional differences within individual lathes lead to localized variations in corrosion response and produce jagged areas on the corrosion surface [32]. Overall, the distribution of various microstructures in the weld leads to a weld metal corrosion rate significantly higher than that of the base metal.…”

Measurement and analysis of SHCCT diagram for CLAM steel

“…The TBM materials must perform within hostile environments such as high temperature, heavy neutron irradiation and contact with liquid LiPb alloy [5,6]. Because of its complex design and construction, including complicated internal cooling gas channels [7], it is difficult to form the TBM as a monolithic integral structure and therefore it must be fabricated from many parts welded together.…”