Electron irradiation experiments in support of fusion materials development

Conference · Fri Nov 01 00:00:00 EST 1991

OSTI ID:10114856

Gelles, D S ^[1]; Ohnuki, S; Takahashi, H ^[2]; Matsui, H ^[3]; Kohno, Y ^[4]

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1. Pacific Northwest Lab., Richland, WA (United States)
2. Hokkaido Univ., Sapporo (Japan)
3. Tohoku Univ., Sendai (Japan)
4. Tokyo Univ. (Japan)

Microstructural evolution in response to 1 MeV irradiation has been investigated for three simple ferritic alloys, pure beryllium, pure vanadium, and two simple vanadium alloys over a range of temperatures and doses. Microstructural evolution in Fe-3, -9, and -18Cr ferritic alloys is found to consist of crenulated, faulted a<100> loops and circular, unfaulted a/2 <111> loops at low temperatures, but with only unfaulted loops at high temperatures. The complex dislocation evolution is attributed to sigma phase precipifaults arising from chromium segregation to point defect sinks. Beryllium is found to be resistant to electron damage; the only effect observed was enhanced dislocation mobility. Pure vanadium, V-5Fe, and V-1Ni microstructural response was complicated by precipitation on heating to 400{degrees}C and above, but dislocation evolution was investigated in the range of room temperature to 300{degrees}C and at 600{degrees}C. The three materials behaved similarly, except that pure vanadium showed more rapid dislocation evolution. This difference does not explain the enhanced swelling observed in vanadium alloys.

• Research Organization: Pacific Northwest Lab., Richland, WA (United States)
• Sponsoring Organization: USDOE, Washington, DC (United States)
• DOE Contract Number: AC06-76RL01830
• OSTI ID: 10114856
• Report Number(s): PNL-SA-19424; CONF-911111-31; ON: DE92006516
• Resource Relation: Conference: ICFRM-5: 5th. international conference on fusion reactor materials,Clearwater, FL (United States),17-22 Nov 1991; Other Information: PBD: Nov 1991
• Country of Publication: United States
• Language: English

Related Subjects

70 PLASMA PHYSICS AND FUSION TECHNOLOGY
36 MATERIALS SCIENCE
THERMONUCLEAR REACTOR MATERIALS
PHYSICAL RADIATION EFFECTS
BERYLLIUM ALLOYS
ELECTRON MICROSCOPY
VANADIUM ALLOYS
IRON ALLOYS
CHROMIUM ALLOYS
MICROSTRUCTURE
DAMAGING NEUTRON FLUENCE
ELECTRON SPECTRA
ENERGY-LOSS SPECTROSCOPY
TEMPERATURE DEPENDENCE
700480
360106
COMPONENT DEVELOPMENT
MATERIALS STUDIES
RADIATION EFFECTS