Abstract
The effects of irradiation up to 20 dpa on the Charpy impact properties of reduced-activation ferritic/martensitic steels (RAFs) were investigated. The ductile-brittle transition temperature (DBTT) of F82H-IEA shifted up to around 323K. TIG weldments of F82H showed a fairly small variation on their impact properties. A finer prior austenite grain size in F82H-IEA after a different heat treatment resulted in a 20K lower DBTT compared to F82H-IEA after the standard heat treatment, and that effect was maintained even'after irradiation. Helium effects were investigated utilizing Ni-doped F82H, but no obvious evidence of helium effects - was obtained. ORNL9Cr-2WVTa and JLF-1 steels showed smaller DBTT shifts compared to F82H-IEA.
| Original language | English |
|---|---|
| Pages (from-to) | 206-210 |
| Number of pages | 5 |
| Journal | Fusion Science and Technology |
| Volume | 44 |
| Issue number | 1 |
| DOIs | |
| State | Published - Jul 2003 |
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