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Measurement of Local Mechanical Properties of T91 Steel Corroded by Molten Lead-Bismuth Eutectic Alloy via Micropillar Compression Test

Published online by Cambridge University Press:  10 January 2018

K. Kaede ,
A. Jäger ,
V. Gärtnerová ,
C. Takushima ,
T. Yamamuro  and
S. Tsurekawa
K. Kaede
Affiliation:
Department of Materials Science and Engineering, Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
A. Jäger
Affiliation:
Department of Mechanics, Faculty of Civil Engineering, Czech Technical University, Prague, Czech Republic
V. Gärtnerová
Affiliation:
Struers GmbH, Scientific and Technological Park, Roztoky, Czech Republic
C. Takushima
Affiliation:
Department of Materials Science and Engineering, Graduate School of Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
T. Yamamuro
Affiliation:
Technical Division, Faculty of Engineering, Kumamoto University, Kumamoto, 860-8555, Japan
S. Tsurekawa*
Affiliation:
Structural Materials, Division of Materials Science, Faculty of Advanced Science and Technology, Kumamoto University, Kumamoto, 860-8555, Japan
*
*Corresponding author: turekawa@kumamoto-u.ac.jp
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Abstract

T91 ferritic/martensitic (F/M) steel is an expected structural material candidate for Gen IV liquid lead-bismuth cooled nuclear reactors. However, molten lead-bismuth eutectic alloy (mLBE) often causes liquid-metal embrittlement (LME) of F/M steels. Although prior austenite grain boundaries and martensite block boundaries were reported to be preferential sites for LME, the mechanism of LME in a T91/LBE couple is yet to be comprehensively understood. In this paper, the effect of mLBE on T91 steel was investigated using micropillar compression tests. mLBE corrosion was found to cause a significant decrease in yield stress. The micropillar made from mLBE-corroded specimen was significantly sheared along high angle boundaries. In addition, EDS analysis demonstrated the presence of Pb/Bi at these high angle boundaries.

Keywords

grain boundariesembrittlementmicrostructure
Type
Articles
Information
MRS Advances , Volume 3 , Issue 8-9: Theory, Characterization and Modeling , 2018 , pp. 419 - 425
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Copyright
Copyright © Materials Research Society 2018 

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References

REFERENCES

Auger, T., Lorang, G., Guérin, S., Pastol, J.-L., Gorse, D., Nucl, J.. Mater., 335, 227 (2004).Google Scholar
Benson, B. A., Hoagland, R. G., Scripta Metall., 23, 1943 (1989).CrossRefGoogle Scholar
Keast, V. J., Bruley, J., Rez, P., Maclaren, J. M., Williams, D. B., Acta Mater., 46, 481 (1998).CrossRefGoogle Scholar
Jian, L., Huikai, C., Asl, K. M., Kiely, C. J., Harmer, M. P., Science, 333, 1730 (2011).Google Scholar
Dai, Y., Long, B., Groeschel, F., Nucl, J.. Mater., 356, 222 (2006).Google Scholar
Gorse, D., Auger, T., Vogt, J.-B., Serre, I., Weisenburger, A., Gessi, A., Agostini, P., Fazio, C., Hojna, A., Di Gabriele, F., Van Den Bosch, J., Coen, G., Almazouzi, A., Serrano, M., Nucl, J.. Mater. 415, 284 (2011).Google Scholar
Martin, M.L., Auger, T., Johnson, D.D., Robertson, I.M., Nucl, J.. Mater. 426, 71 (2012).Google Scholar
Gong, X., Marmy, P., Volodin, A., Amin-Ahmadi, B., Qin, L., Schryvers, D., Gavrilov, S., Stergar, E., Verlinden, B., Wevers, M., Seefeldt, M., Corrosion Science 102, 137 (2016).Google Scholar
Takushima, C., Yoshii, Y., Tsurekawa, S., Morizono, Y., Watanabe, S., Shibayama, T., Collected Abstracts in 2013, Autumn Meeting of The Japan of Metals and Materials, No. 274 (DVD)Google Scholar
Jiang, L., Chawla, N., Scripta Mater. 63, 480 (2010).Google Scholar
Ghassemi-Armaki, H., Chen, P., Bhat, S., Sadagopan, S., Kumar, S., Bower, A., Acta Mater., 61, 3460 (2013).Google Scholar