Electron irradiation experiments in support of fusion materials development [electronic resource].

Published:: Washington, D.C. : United States. Dept. of Energy, 1991.
Oak Ridge, Tenn. : Distributed by the Office of Scientific and Technical Information, U.S. Dept. of Energy.
Physical Description:: 15 pages : digital, PDF file
Additional Creators:: Pacific Northwest Laboratory, United States. Department of Energy, and United States. Department of Energy. Office of Scientific and Technical Information

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Summary:

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°C and above, but dislocation evolution was investigated in the range of room temperature to 300°C and at 600°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.

Report Numbers:

E 1.99:pnl-sa--19424
E 1.99: conf-911111--31
conf-911111--31
pnl-sa--19424

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Note:

Published through SciTech Connect.
11/01/1991.
"pnl-sa--19424"
" conf-911111--31"
"DE92006516"
ICFRM-5: 5th. international conference on fusion reactor materials,Clearwater, FL (United States),17-22 Nov 1991.
Takahashi, H.; Matsui, H.; Ohnuki, S.; Gelles, D.S.; Kohno, Y.

Funding Information:

AC06-76RL01830

View MARC record | catkey: 14747900