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Investigation of High-temperature Oxidation Kinetics and Residual Ductility of Oxidized Samples of Sponge-based E110 Alloy Cladding Tubes

Published online by Cambridge University Press:  20 December 2016

Y. Yan ,
B. E. Garrison ,
T. S. Smith ,
M. Howell ,
J. R. Keiser  and
G. L. Bell
Y. Yan*
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
B. E. Garrison
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
T. S. Smith
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
M. Howell
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
J. R. Keiser
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
G. L. Bell
Affiliation:
Oak Ridge National Laboratory, Oak Ridge, TN 37831, U.S.A.
*
*(Email: yy9@ornl.gov)
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Abstract

Two-sided oxidation experiments were recently conducted at 1000-1200°C in flowing steam with samples of sponge-based Zr-1Nb alloy E110. Although the old electrolytic E110 tubing exhibited a high degree of susceptibility to nodular corrosion and experienced breakaway oxidation rates in relatively short time, the new sponge-based E110 has demonstrated steam oxidation behavior comparable to Zircaloy-4. The sponge-based E110 followed the parabolic law, and the derived oxidation rate constant is in good agreement with the Cathcart-Pawel (CP) correlation at 1100-1200°C. For 1000°C oxidation, the weight-gain of sponge-based E110 is much lower than Zircaloy-4. No breakaway oxidation was observed at 1000°C up to 8000 s. Ring compression tests were conducted to evaluate the residual ductility of oxidized samples at room temperature and at 135°C. All sponge-based E110 specimens were still ductile at 135°C after being oxidized up to 20% equivalent cladding reacted at 1000-1200°C. Metallographic examinations were performed on oxidized E110 specimens to correlate material performance with microstructure.

Keywords

Zroxidationductility
Type
Articles
Information
MRS Advances , Volume 2 , Issue 21-22: Energy and Sustainability , 2017 , pp. 1203 - 1208
Copyright
Copyright © Materials Research Society 2016 

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References

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