Modelling of the Zr-2.5Nb alloy properties with hydrides

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作者：
Lithuanian Energy Institute, 3 Breslaujos str., 44403 Kaunas, Lithuania [1 ]
不详 [2 ]
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来源：
Mechanika | 2007年 / 2卷 / 23-26期
关键词：
Corrosion - Finite element method - Hydrides - Mathematical models - Metallography - Reactor cores;
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摘要：
Fuel channels of RBMK-1500 reactors are the major structural elements of the reactor core. Hydrogen absorbed by zirconium alloy during corrosion process is one of the main factors determining lifetime of Zr-2.5Nb FC. Therefore the evaluation of the influence of hydrides on fracture parameters of zirconium alloy is important. The volume part of the hydrides at different hydrogen concentration was evaluated. The volume of the hydrides was specified from metallographic investigation. The modelling of the influence of hydrides on mechanical properties of zirconium-2.5niobium alloy was performed using finite element method. The prognosis results were compared with the experimental data. The results of investigations demonstrated that the Finite Element method could be used for the modelling of material properties of fuel channels.
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