Deformation and Fracture of Zirconium Alloy at Low Temperatures
E. V. Karpov1,2, A. Yu. Larichkin1,2
1Lavrentyer Institute of Hydrodynamics, Siberian Branch, Russian Academy of Sciences, Novosibirsk, 630090, Russia
2Novosibirsk State University, Novosibirsk, 630090, Russia
Keywords: циркониевый сплав, многократное нагружение, малоцикловая усталость, низкие температуры, релаксация напряжений, zirconium alloy, multiple load, low-cycle fatigue, low temperatures, stress relaxation
Abstract
This paper describes the results of an experimental study on deformation and fracture of a Zr - 1% Nb zirconium alloy in the case of multiple loads at low temperatures (-80oC). Samples cut out of pipes and applied as fuel rod shells of heat releasing assemblies of nuclear reactors are used to conduct a series of experiments on low-cycle stretching and compression at low temperatures and study the effect of low temperature on stress relaxation in the material under a different number of preliminary loads.
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