DEVELOPMENT AND PROPERTIES OF SILVER-BASE ALLOYS AS CONTROL ROD MATERIALS FOR PRESSURIZED WATER REACTORS

摘要

The metallurgical design and properties of silver-base alloys which show considerable promise of fulfilling metallurgy, physics, and mechanical design requirements of control rods for nuclear pressurized water reactor plant service are described By extension of the Hume-Rather electron concentration rule, ternary and quaternary Ag-base alloys were designed for metallurgical stability, and their physics worth, corrosion, and physical and mechanical properties were determined Of particular interest is the kg + 15 w/o in ~ 5 w/o Cd alloy which is comparable to hafnium in neutron absorption characteristics