FECRAL ALLOY FOR FUEL CLADDING AND STRUCTURAL MATERIALS OF PB OR PB-BI ALLOY COOLED FAST REACTOR

摘要

PURPOSE: FeCrAl alloy for fuel cladding and structural materials of Pb or Pb-Bi alloy cooled fast reactor is provided to prevent chrome and sulfur from segregation to a surface oxide layer and a base metal domain. CONSTITUTION: FeCrAl alloy comprises aluminum 4.0~7.0 weight%, carbon less than 0.02 weight%, silicon 0.5 weight%, manganese 0.2 weight%, chrome 15.0~25.0 weight%, nickel 0.5 weight%, hafnium less than 0.01 weight%, one or more element from the reacting component 0.3~1.0 weight%, and inevitable impurity. The group of the reacting component is composed of Y, La, Ce, and Ti.