Low-energy potential-induced helium trapping in nano-austenitic steels

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

Journal of Nuclear Materials Pub Date : 2025-02-01 DOI:10.1016/j.jnucmat.2025.155636

Jun Hui , Jiapeng Chen , Min Liu , Shuo Wang , Biao Wang

引用次数: 0

Abstract

In austenitic steel for use in reactor cores, the selected solute elements can greatly affect the steel's resistance to damage by He irradiation. In this work, we examined the effect of solute solubility on He irradiation damage in nanostructured austenitic steel. i) The chemical contributions are charge transfer and bonding between elements, whereas the mechanical contribution is associated with local distortion due to atomic radius mismatch; ii) The bonds between rare earth elements and bulk atoms are weak and short, resulting in the formation of low-energy potential traps around the rare earth elements, enabling them to trap He. This insight is valuable for understanding the mechanisms of radiation resistance in metals.

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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.