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Электронный каталог: Samadov, S. F. - Structural Response of W-Rich Alloys to Gamma Irradiation
Samadov, S. F. - Structural Response of W-Rich Alloys to Gamma Irradiation
Статья
Автор: Samadov, S. F.
Micro and Nanostructures: Structural Response of W-Rich Alloys to Gamma Irradiation
б.г.
ISBN отсутствует
Автор: Samadov, S. F.
Micro and Nanostructures: Structural Response of W-Rich Alloys to Gamma Irradiation
б.г.
ISBN отсутствует
На полку
Статья
Samadov, S.F.
Structural Response of W-Rich Alloys to Gamma Irradiation / S.F.Samadov, V.A.Turchenko, M.N.Mirzayev, K.M.Hasanov, N.V.M.Trung, O.A.Samedov, A.S.Abiyev. – Text : electronic // Micro and Nanostructures. – 2026. – Vol. 217. – P. 208783. – URL: https://doi.org/10.1016/j.micrna.2026.208783. – Bibliogr.: 38.
In this study, the structural response of W–Ni alloys to gamma irradiation was investigated through the combined application of X-ray diffraction (XRD) and neutron diffraction techniques. The initial phase analysis revealed that the sample consists of a dominant cubic W phase (space group Im m) and a secondary tetragonal WNi4 phase (space group I4/m). While XRD primarily characterizes the near-surface structural state, neutron diffraction provides more reliable information over the bulk volume of the sample, confirming the presence of both phases throughout the entire volume. Rietveld refinement of the neutron diffraction results showed that gamma irradiation in the dose range of 620–3566 kGy does not induce any phase transformation, and the structural changes are limited only to variations in the lattice parameters of the existing phases. The primary W phase exhibited a gradual lattice contraction with increasing irradiation dose, with the lattice parameter decreasing from 3.1698 Å to 3.1681 Å and the unit cell volume decreasing from 31.85 Å&sup(3) to 31.798 Å&sup(3) at the maximum dose. This result indicates a relatively stable and monotonic structural response of this phase. In contrast, the changes in the lattice parameters of the WNi4 phase were non-monotonic and anisotropic in nature, with the a and c parameters varying in different directions depending on the irradiation dose. This behavior can be explained by the higher sensitivity of the tetragonal phase to irradiation-induced point defects, local lattice distortions, and a nonequilibrium structural state. These results are of relevance to the nuclear materials community, providing improved insight into the radiation stability of W–Ni alloys under *g-irradiation conditions.
Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
Спец.(статьи,препринты) = С 349.1 - Действие излучения на материалы$
ОИЯИ = ОИЯИ (JINR)2026
Samadov, S.F.
Structural Response of W-Rich Alloys to Gamma Irradiation / S.F.Samadov, V.A.Turchenko, M.N.Mirzayev, K.M.Hasanov, N.V.M.Trung, O.A.Samedov, A.S.Abiyev. – Text : electronic // Micro and Nanostructures. – 2026. – Vol. 217. – P. 208783. – URL: https://doi.org/10.1016/j.micrna.2026.208783. – Bibliogr.: 38.
In this study, the structural response of W–Ni alloys to gamma irradiation was investigated through the combined application of X-ray diffraction (XRD) and neutron diffraction techniques. The initial phase analysis revealed that the sample consists of a dominant cubic W phase (space group Im m) and a secondary tetragonal WNi4 phase (space group I4/m). While XRD primarily characterizes the near-surface structural state, neutron diffraction provides more reliable information over the bulk volume of the sample, confirming the presence of both phases throughout the entire volume. Rietveld refinement of the neutron diffraction results showed that gamma irradiation in the dose range of 620–3566 kGy does not induce any phase transformation, and the structural changes are limited only to variations in the lattice parameters of the existing phases. The primary W phase exhibited a gradual lattice contraction with increasing irradiation dose, with the lattice parameter decreasing from 3.1698 Å to 3.1681 Å and the unit cell volume decreasing from 31.85 Å&sup(3) to 31.798 Å&sup(3) at the maximum dose. This result indicates a relatively stable and monotonic structural response of this phase. In contrast, the changes in the lattice parameters of the WNi4 phase were non-monotonic and anisotropic in nature, with the a and c parameters varying in different directions depending on the irradiation dose. This behavior can be explained by the higher sensitivity of the tetragonal phase to irradiation-induced point defects, local lattice distortions, and a nonequilibrium structural state. These results are of relevance to the nuclear materials community, providing improved insight into the radiation stability of W–Ni alloys under *g-irradiation conditions.
Спец.(статьи,препринты) = С 342 г1 - Замедление и диффузия нейтронов. Дифракция
Спец.(статьи,препринты) = С 349.1 - Действие излучения на материалы$
ОИЯИ = ОИЯИ (JINR)2026
