Effects of irradiation on low-activation ferritic alloys

Technical Report · Fri Feb 01 00:00:00 EST 1985

DOI:https://doi.org/10.2172/6423769· OSTI ID:6423769

Gelles, D. S.; Hamilton, M. L.

The objective of this work is to provide guidance on the applicability of low activation bainitic and martensitic steels for fusion reactor structural components. A series of low activation ferritic alloys has been designed, fabricated, irradiated in MOTA 1B, and tested and examined following irradiation. The series consists of alloys similar to 2-1/4Cr-1Mo with vanadium substituted for molybdenum, alloys similar to 9Cr-1Mo with tungsten and/or vanadium substituted for molybdenum and alloys similar to HT-9 with tungsten and/or vanadium substituted for molybdenum. The results demonstrate that low activation alloys can be successfully produced in the ferritic alloy class. The 2-1/4Cr-V alloys develop excessive irradiation hardening due to precipitation following irradiation at 420/degree/C and the 2-1/4Cr-V and 9Cr-V/W alloys developed excessive softening due to precipitate coarsening and dislocation recovery following irradiation at 585/degree/C. In comparison, the 12Cr-W-V alloy appears to have excellent properties; ..cap alpha..' precipitation at 420/degree/C in-reactor did not significantly increase strength and reasonable strength was maintained after irradiation at 585/degree/C probably in part due to intermetallic precipitate development. 11 refs., 7 figs., 3 tabs.

• Research Organization: Hanford Engineering Development Lab., Richland, WA (United States)
• DOE Contract Number: AC06-76FF02170
• OSTI ID: 6423769
• Report Number(s): HEDL-7513; ON: DE89010149
• Resource Relation: Other Information: Paper copy only, copy does not permit microfiche production
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
70 PLASMA PHYSICS AND FUSION TECHNOLOGY
CHROMIUM ALLOYS
PHYSICAL RADIATION EFFECTS
IRON BASE ALLOYS
VANADIUM ALLOYS
CARBIDES
DUCTILITY
FERRITE
HIGH TEMPERATURE
IRRADIATION
MICROSTRUCTURE
PHASE STABILITY
RADIATION HARDENING
SWELLING
TENSILE PROPERTIES
ALLOYS
CARBON ADDITIONS
CARBON COMPOUNDS
CRYSTAL STRUCTURE
HARDENING
IRON ALLOYS
MECHANICAL PROPERTIES
RADIATION EFFECTS
STABILITY
360106* - Metals & Alloys- Radiation Effects
360102 - Metals & Alloys- Structure & Phase Studies
700209 - Fusion Power Plant Technology- Component Development & Materials Testing