Preirradiation microstructural development designed to minimize properties degradation during irradiation in austenitic alloys

摘要: Abstract The first-generation Prime Candidate Alloy (PCA) for the austenitic stainless steel class of alloys application as a Magnetic Fusion Energy (MFE) first-wall material is 14 Cr-16 Ni-0.25 Ti modification type 316 steel. A key parameter performance wall lifetime. ability to resist swelling and embrittlement during irradiation important longer lifetimes. microstructure that evolves primarily responsible both responses, helium plays central role in this microstructural evolution. This paper indicates how preirradiation microstructures employ control MC precipitation dislocation density are designed produced fusion PCA. These expected enable better swelling, phase instability irradiation.