Microstructural and defect behavior in functionally graded Nb/Zr nanolaminates under irradiation; Journal of Materials Research; Vol. XX
| Parent link: | Journal of Materials Research.— .— Heidelberg: Springer Nature Vol. XX.— 2026.— Article number XX, XX p. |
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| 其他作者: | , , , , , , , , , , , , , |
| 总结: | Title screen This study investigates the microstructural response and defect behavior of functionally graded Nb/Zr nanolaminates under proton and helium ion irradiation. Proton fluences ranged from 9.6 × 1016 to 3.5 × 1017 ions/cm2, and helium fluences from 3.4 × 1014 to 6 × 1016 ions/cm2. Transmission electron microscopy and X-ray diffraction confirm the structural stability of the nanolaminate, with no phase transformations observed. Positron annihilation spectroscopy indicates that irradiation does not lead to significant bulk defect accumulation; defect-related changes remain weak and highly localized, with helium producing slightly stronger effects than protons. First-principles calculations show that irradiation-induced atomic displacements are smaller than lattice distortions from intrinsic strain and Nb/Zr interface misfit. Helium interstitials induce stronger local relaxation than hydrogen, though both effects are secondary to interfacial strain fields. These results demonstrate that functionally graded Nb/Zr nanolaminates effectively limit defect accumulation and preserve structural integrity under ion irradiation AM_Agreement |
| 语言: | 英语 |
| 出版: |
2026
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| 主题: | |
| 在线阅读: | https://doi.org/10.1557/s43578-026-01822-9 |
| 格式: | 电子 本书章节 |
| KOHA link: | https://koha.lib.tpu.ru/cgi-bin/koha/opac-detail.pl?biblionumber=686439 |