Material properties of the F82H melted in an electric arc furnace

Sakasegawa, Hideo   ; Tanigawa, Hiroyasu; 2 of others*

DEMO reactor requires over 11,000 tons of reduced activation ferritic/martensitic steel (RAFM). Therefore, it is necessary to develop the manufacturing technology for fabricating such large-scale RAFM with appropriate mechanical properties. In this work, we focused mechanical properties of the F82H-BA12 heat which was melted in a 20 tons electric arc furnace. After the melting followed by forging and hot-rolling, this F82H-BA12 heat was heat-treated in four different conditions to optimize heat treatment conditions, and tensile and Charpy impact tests were then performed. The result of these mechanical tests was compared with that of former F82H heats less than 5 tons, which were melted applying vacuum induction melting, in order to study the effect of using electric furnace.