29 tubes made of an E110 alloy for VVER and PWR reactors are subjected to creep tests under external pressure (temperature of 350 and 380°C, circumferential stress of 70–130 MPa, holding time up to 4250 h). Creep is found to be accelerated after deformation up to 0.9% and ovality up to b/a = 0.86 and is ended in the collapse of a tube. The equations of tube equilibrium and creep under pressure are generalized for tubes of any ovality (ellipses of any eccentricity). The solutions to these equations predict the presence of a general curve in the contour length–eccentricity coordinates and give tube instability conditions under pressure.
This is a preview of subscription content, log in to check access.
Buy single article
Instant unlimited access to the full article PDF.
Price includes VAT for USA
V. F. Dudinov, Yu. N. Knizhnikov, and P. A. Platonov, “Stability of the fuel cladding from initial ovality to collapse during creep under external pressure,” Vopr. Atomn. Nauki Tekhn., Ser. Atomn. Materialoved. 27 (2), 54–59 (1988).
R. Adamson, F. Garzarolli, and C. Patterson, In-Reactor Creep of Zirconium Alloys (ANTI, Sweden, 2009).
A. M. Lokoshchenko, Creep and Long-Term Strength of Metals (Fizmatlit, Moscow, 2016).
V. V. Kiselev and D. V. Dolgikh, Nonlinear–Elastic Patterns of Dents on the Surfaces of Loaded Plates and Shells (Fizmatlit, Moscow, 2013).
A. S. Vol’mir, Stability of Deformed Systems, 2nd ed. (Nauka, Moscow, 1967).
V. I. Van’ko, Essays about the Stability of Structural Members, 3d ed. (MVTU, Moscow, 2015).
E. Yanke, F. Emde, and F. Lesh, Special Functions (Formulas, Plots, Tables), 6th ed. (Nauka, Moscow, 1964).
H. J. Frost and M. F. Ashby, Deformation-Mechanisms Maps (Pergamon, New York, 1982).
S. P. Timoshchenko, History of the Material Resistance Science with Brief Information from the History of the Theory of Elasticity and the Theory of Constructions, 2nd ed. (Komkniga, Moscow, 2006).
I. Prigogine and D. Kondepudi, Modern Thermodynamics. From Heat Engines to Dissipative Structures (Wiley, New York, 1998).
G. P. Bystrai, Thermodynamics of Irreversible Processes in Open Systems (RKhD, Moscow, 2011).
G. Tsigler, Extreme Principles of the Thermodynamics of Irreversible Processes and Continuum Mechanics (Mir, Moscow, 1966).
Physical Metallurgy. Vol. 6. Structural Materials of Nuclear Power Engineering, Ed. by B. A. Kalin (NIYau MIFI, Moscow, 2012).
R. V. Sausvell, Introduction to the Theory of Elasticity for Engineers and Physicists (IL, Moscow, 1948).
L. D. Landau and E. M. Lifshitz, Theory of Elasticity (Nauka, Moscow, 1987).
I. N. Izmalkov, L. P. Loshmanov, and A. V. Kostyukhina, “Mechanical properties of an E110 alloy at temperatures up to 1273 K,” Izv. Vyssh. Uchebn. Zaved., Yadern. Energetika, No. 2, 64–70 (2013).
Translated by K. Shakhlevich
About this article
Cite this article
Vorob’ev, E.E., Peregud, M.M., Khokhunova, T.N. et al. Creep of Tubes under External Pressure. Russ. Metall. 2019, 1112–1124 (2019) doi:10.1134/S0036029519100392
- creep in tubes
- E110 alloy
- external pressure