軽水炉用制御材Ag-In-Cd合金の押出しに関する研究

Abstract

To obtain fundamental informations on the fabrication technology of a control rod absorber of Ag-15 wt% In-5 wt% Cd alloy, which was developed considering the HumeRothery electron concentration rule, some experiments were performed. By the hardness tests on alloys obtained in several steps of cold rolling and subsequent annealing, the alloy was confirmed to have good workability. The cast alloy was able to be extruded at 700 deg C in round rods. The value of extrusion coefficient K was determined to be about 15 kg/mm/sup 2/ at 700 deg C. The tensile properties and microstructures of extruded rods were also studied.