Determination of creep compliance and creep-swelling coupling coefficients for neutron-irradiated titanium-modified stainless steel at {approximately}400{degree}C [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: 9 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

Irradiation creep data from FFTF-MOTA at ∼400°C were analyzed for nine 20% cold-worked titanium-modified type 316 stainless steels, each of which exhibits a different duration for the transient regime of swelling. One of these steels was the fusion prime candidate alloy designated PCA. The others were various developmental breeder reactor heats. The analysis was based on the assumption that the B₀ + DS creep model applies to these steels at this temperature. This assumption was found to be valid. A creep-swelling coupling coefficient of D ≈ 0.6 × 10{sup −2} MPa{sup −1} was found for all steels that had developed a significant level of swelling. This result is in excellent agreement with the results of earlier studies conducted in EBR-II using annealed AISI 304L and also 10% and 20% cold-worked AISI 316 stainless steels. There appears to be some enhancement of swelling by stress, contradicting an important assumption in the analysis and leading to an apparent but misleading nonlinearity of creep with respect to stress.

Report Numbers

E 1.99:pnl-sa--19385
E 1.99: conf-911111--22
conf-911111--22
pnl-sa--19385

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Note

Published through SciTech Connect.
11/01/1991.
"pnl-sa--19385"
" conf-911111--22"
"DE92006518"
ICFRM-5: 5th. international conference on fusion reactor materials,Clearwater, FL (United States),17-22 Nov 1991.
Garner, F.A.; Eiholzer, C.R.; Toloczko, M.B.

Funding Information

AC06-76RL01830

View MARC record | catkey: 14746160