离子辐照对钒微柱力学行为的影响

IF 2.8 2区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY

Journal of Nuclear Materials Pub Date : 2025-04-03 DOI:10.1016/j.jnucmat.2025.155784

Lei Li , Zhixi Zhu , Jiaohui Yan , Shang Chen , Qiuhong Zhang , Yaguang Dong , Xun Guo , Ke Jin , Yunfei Xue

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引用次数: 0

摘要

本研究报告了质子辐照对室温下不同直径钒微柱机械行为的影响。辐照诱导的强化作用随着钒柱尺寸的增大而变得更加显著，达到与尺寸无关的强度的临界直径在辐照到 0.2 dpa 后大大减小。虽然所有未经过辐照的石柱都会发生均匀变形，但厚度大于 1 μm 的辐照石柱的变形集中在顶部 30% 区域，在该区域，大多数辐照缺陷都被变形位错擦除，从而导致软化和随之而来的独特变形局部化行为。

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Ion irradiation effects on the mechanical behavior of vanadium micropillars

The present work reports the impact of proton irradiation on the mechanical behavior of vanadium micropillars with various diameters at room temperature. Irradiation induced strengthening appears more significant with increasing pillar size, and the critical diameter to reach size-independent strength is strongly reduced after irradiation to 0.2 dpa. Although all unirradiated pillars deform uniformly, the deformations of the irradiated pillars thicker than 1 μm are concentrated within the top 30 % region, where most irradiation defects are wiped by deformation dislocations, leading to softening and the consequent unique deformation localization behavior.

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来源期刊

Journal of Nuclear Materials 工程技术-材料科学：综合

CiteScore

5.70

自引率

25.80%

发文量

601

审稿时长

63 days

期刊介绍： The Journal of Nuclear Materials publishes high quality papers in materials research for nuclear applications, primarily fission reactors, fusion reactors, and similar environments including radiation areas of charged particle accelerators. Both original research and critical review papers covering experimental, theoretical, and computational aspects of either fundamental or applied nature are welcome. The breadth of the field is such that a wide range of processes and properties in the field of materials science and engineering is of interest to the readership, spanning atom-scale processes, microstructures, thermodynamics, mechanical properties, physical properties, and corrosion, for example. Topics covered by JNM Fission reactor materials, including fuels, cladding, core structures, pressure vessels, coolant interactions with materials, moderator and control components, fission product behavior. Materials aspects of the entire fuel cycle. Materials aspects of the actinides and their compounds. Performance of nuclear waste materials; materials aspects of the immobilization of wastes. Fusion reactor materials, including first walls, blankets, insulators and magnets. Neutron and charged particle radiation effects in materials, including defects, transmutations, microstructures, phase changes and macroscopic properties. Interaction of plasmas, ion beams, electron beams and electromagnetic radiation with materials relevant to nuclear systems.