Microstructural examination of commercial ferritic alloys at 200 dpa
Technical Report
·
OSTI ID:47741
- Pacific Northwest Lab., Richland, WA (United States)
Microstructures and density change measurements are reported for Martensitic commercial steels HT-9 and Modified 9Cr-1Mo (T9) and oxide dispersion strengthened ferritic alloys MA956 and MA957 following irradiation in the FFTF/MOTA at 420{degrees}C to 200 DPA. Swelling as determined by density change remains below 2% for all conditions. Microstructures are found to be stable except in recrystallized grains of MA957, which are fabrication artifacts, with only minor swelling in the Martensitic steels and {alpha}{prime} precipitation in alloys with 12% or more chromium. These results further demonstrate the high swelling resistance and microstructural stability of the ferritic alloy class.
- Research Organization:
- Oak Ridge National Lab., TN (United States)
- DOE Contract Number:
- AC06-76RL01830
- OSTI ID:
- 47741
- Report Number(s):
- DOE/ER--0313/16; ON: DE95003404
- Country of Publication:
- United States
- Language:
- English
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