Influence of Thermomechanical Treatment and Environmental History on Creep, Swelling and Embrittlement of AISI 316 at 400 Degree C and 130 DPA

摘要

A comprehensive creep experiment on AISI 316 stainless steel involving irradiation at /approximately/400/degree/C to 130 dpa has been completed. The influence of material and environmental variables on creep and swelling of this steel at /approximately/400/degree/C is shown to have many similarities with the behavior exhibited in an earlier experiment conducted at /approximately/550/degree/C, but significant differences are also apparent. These arise because the 400/degree/C experiment was clearly conducted in a regime dominated by the kinetics of point defect recombination whereas the 550/degree/C experiment was conducted in the sink-dominated regime. At 400/degree/C it is also found that a severe embrittlement arises concurrent with /approximately/10% swelling, requiring careful handling of test specimens and structural assemblies at room temperature. 19 refs., 19 figs. (ERA citation 13:054204)