Abstract
Clad ballooning, which is a plastic instability, results in sudden large deformation and thereby coolant flow blockage in case of transients in a nuclear reactor. We report the experimental findings in the present paper. Experiments have been carried out to investigate the effect of ballooning in fast reactors, where Fe-based alloys are used as clad material. Real-time X-ray imaging captured the evolution of ballooning and rupture, which occurred within a short duration. It was seen that there was material instability until the point of onset of ballooning and thereafter the plastic instability was observed. Microstructural investigations carried out on various regions of the failed specimen showed that there is significant grain coarsening and a drastic drop in the hardness values in the ballooned region when compared to the unaffected region. Fractography tests of the ballooned specimen confirmed the presence of fine dimples at the ballooned region, which is a signature of ductile failure.
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References
Kim J H, Lee M H, Jeong Y H, and Lim J G, Nucl Eng Des 238 (2008) 1441.
Ragheb M, Internet, https://mragheb.com/Clad%20Ballooning%20Accident.pdf (2010).
Gupta A, Ballooning in Fuel Clads: A Study in the Constitutive Theory and Stability of Thermoplastic Response, IGCAR—IIT Kanpur Collaborative Project (2018).
Hill R, J Mech Phys Solids 6 (1958) 236.
Lin E I H, in 4th International Conference on Structural Mechanics in Reactor Technology, San Francisco (1977).
Lin I H, Hirth J P, and Hart E W, Acta Metall 29 (1981) 819.
Hill R, and Hutchinson J W, J Mech Phys Solids 23 (1975) 239.
Larsson M, Needleman A, Tvergaard V, and Storakers B, J Mech Phys Solids 30 (1982) 121.
Hill R, Hecker S S, and Stout M G, Int J Solids Struct 31 (1994) 2999.
Erbacher F, Neitzel H, and Wiehr K, Am. Soc. Test. Mater (1979) 429.
Grandjean C, Nucl Eng Des 237 (2007) 1872.
Leridon A, Nucl Eng Des 61 (1980) 143.
Ammirabilea L, and Walker S P, Nucl Eng Des 268 (2014) 24.
Mishra P, J Nucl Mater 429 (2012) 257.
Garner F A, in Comprehensive Nuclear Materials (ed) Konings R, Elsevier (2012), p 33.
Porollo S I, Dvoriashin A M, Konobeev Y V, and Ivanov A A, J Nucl Mater 359 (2006) 41.
Sarkar R, Kumar R S, Raghu N, Chellapandi P, and Chetal S C, J Procedia Eng 55 (2013) 355.
Sarkar R, Kumar R S, Jalaldeen S, Sharma A K, and Velusamy K, Int J Press Vessels Pip 160 (2018) 24.
Jayakumar T, Mathew M D, Laha K, and Sandhya R, Nucl Eng Des 265 (2013) 1175.
Fujiwara M, Uchida H, Ohta S, Yuhara S, Tani S, and Sato Y, in Radiation Induced Changes in Microstructure: 13th International Symposium (Part I) (ed) Garner F A, Packan N H, and Kumar A S. ASTM STP: 955, p 127.
Vijayanand V D, Parameswaran P, Nandagopal M, Panneer Selvi S, Laha K, and Mathew M D, J Nucl Mater 438 (2013) 51.
Vijayanand V D, Laha K, Parameswaran P, Nandagopal M, Panneer Selvi S, and Mathew M D, J Nucl Mater 453 (2014) 188.
Mannan S L, Chetal S C, Raj B, and Bhoje S B, Trans Indian Inst Met 56 (2003) 155.
Campbell F C, Inspection of Metals—Understanding the Basics, Copyright 2013, ASM International, p 233.
Acharya A K, Sharma A K, Avinash C S S S, Das S K, Gnanadhas L, Nashine B K, and Selvaraj P, Nucl Eng Technol 49 (2017) 1442.
Samantaray D, Mandal S, Bhaduri A K, and Sivaprasad P V, Trans Indian Inst Met 63 (2010) 823.
Acknowledgements
The authors are grateful to Shri. S.Raghupathy, Director RDTG, Shri. S. Jalaldeen and Dr. Shaju K Albert for their highly motivating discussions, and for the support from Mr. R. Manu, and Shr. K. Mohan of RDTG. We are also thankful to Mr. N. Raghu and Mr. Krishna Chaitanya, of QAD for the assistance rendered in radiography and Smt. Sreevidya of MMG for carrying out the Fractography tests.
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Sarkar, R., Vijayanand, V.D., Acharya, A.K. et al. Experimental Investigation of the Evolution of Fuel Clad Ballooning Using Real-Time X-ray Imaging and Its Microstructural Studies. Trans Indian Inst Met 74, 1933–1942 (2021). https://doi.org/10.1007/s12666-021-02285-8
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DOI: https://doi.org/10.1007/s12666-021-02285-8