Corrosion and mechanical behavior of novel alumina forming steels in molten lead

IF 3.2 2区工程技术 Q3 MATERIALS SCIENCE, MULTIDISCIPLINARY Journal of Nuclear Materials Pub Date : 2025-02-01 Epub Date: 2024-12-24 DOI:10.1016/j.jnucmat.2024.155587

Facundo Masari , Peter Szakalos , Christopher Petersson , José M. Torralba , Mónica Campos

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Abstract

Three new multi-phase alumina-forming steels with compositions Fe-(10–14.5)Cr-(10–12)Ni-3.5Al (wt.%) were exposed to stagnant lead at 550 and 650 °C for up to 1000 h The experimental alloys formed stable and protective alumina (Al₂O₃) layers at both temperatures, crucial for preventing lead penetration and material degradation. In contrast, 316 L and T91 steels, candidate materials for nuclear applications, showed significant oxidation and lead penetration, particularly at the higher temperature. The designed alloys retained their mechanical properties after exposure, with one of them even increasing yield strength due to phase transformations. The findings highlight the potential of these new alloys with no reactive elements and no thermomechanical treatments, to operate in environments with high-temperature liquid lead, such as Gen IV nuclear reactors or high-temperature concentrated solar power plants.

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新型氧化铝成形钢在铅液中的腐蚀和力学行为

将三种成分为Fe-(10-14.5)Cr-(10-12)Ni-3.5Al （wt.%）的新型多相铝成形钢在550和650℃下暴露于停滞的铅中长达1000小时，实验合金在这两种温度下都形成了稳定的保护性氧化铝（Al2O3）层，这对防止铅渗透和材料降解至关重要。相比之下，316 L和T91钢作为核应用的候选材料，表现出明显的氧化和铅渗透，特别是在较高的温度下。所设计的合金在暴露后仍保持其机械性能，其中一种合金甚至由于相变而提高了屈服强度。这一发现突出了这些不含活性元素和热处理的新合金在高温液态铅环境下的潜力，如第四代核反应堆或高温聚光太阳能发电厂。

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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.