Abstract
Zirconium alloys used in the nuclear reactors experience high-energy neutron irradiation during service leading to alteration of the microstructure. Effect of irradiation on the microstructure in Zr alloys includes creation of point defects and their evolution resulting in formation of dislocation loops. Alteration of microstructure results in degradation of mechanical properties and dimensional changes in Zr alloys. Ion irradiation is traditionally being used as surrogate of neutron irradiation for simulation of radiation damage in structural materials in a shorter time scale. Samples of Zircaloy were irradiated with high-energy proton beam. Microstructures of the irradiated samples were characterized to determine the density of point defects and dislocations. Fraction of dislocation densities related to <a>- and <c>-type loops were determined from X-ray line profile analysis. Mechanical properties of the irradiated samples were determined using tensile tests and nanoindentation. Tensile properties were correlated with the dislocation densities of the irradiated samples.
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The authors gratefully acknowledge the support, guidance and encouragement received from Dr. Srikumar Banerjee for carrying out this work.
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Sarkar, A., Kumar, A. & Mukherjee, S. Radiation Damage Behaviour of a Zirconium Alloy Used in Nuclear Industry. Trans Indian Inst Met 75, 941–948 (2022). https://doi.org/10.1007/s12666-022-02539-z
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DOI: https://doi.org/10.1007/s12666-022-02539-z