Corrosion Resistance of Mn-Containing AFA Alloys in LBE at 550 °C with Controlled Oxygen Concentration of 10−6 wt.%
Alumina-forming austenitic steels (AFA steels) exhibit excellent creep resistance and oxidation capabilities, making them a strong candidate for cladding materials in lead-cooled fast reactors. This study investigates the corrosion resistance of Mn-containing AFA steels in lead-bismuth eutectic (LBE) at 550 °C with a controlled oxygen concentration of 10<sup>-6</sup> wt.%. The results demonstrate that under these experimental conditions, the addition of Al enhances the material's resistance to lead-bismuth corrosion. Moreover, Mn incorporation significantly improves corrosion resistance, with the optimal composition being an AFA alloy containing 16 wt.% Ni, 12 wt.% Cr, 3 wt.% Al, and 4 wt.% Mn. Mn addition alters the type of oxide product formed on the alloy surface, shifting from Fe<sub>3</sub>O<sub>4</sub> or (Fe, Cr)<sub>x</sub>O<sub>y</sub> to (Cr, Mn)<sub>x</sub>O<sub>y</sub>.
Authors
- Yajie He (ORCID: https://orcid.org/0000-0003-4244-0744)
- Xiaogang Fu (ORCID: https://orcid.org/0000-0002-8468-9444)
- Lingzhi Chen (ORCID: https://orcid.org/0000-0002-7208-8916)
- Menghe Tu
- Zihui Liu (ORCID: https://orcid.org/0009-0001-0185-4396)
Institutions
- China Institute of Atomic Energy (CN)
- China General Nuclear Power Corporation (China) (CN)
Publication Details
- Journal
- Materials
- Published
- 2025-03-17
- DOI
- https://doi.org/10.3390/ma18061328
- Citations
- 2
- Primary Topic
- Nuclear Materials and Properties
- Type
- article
- Field-Weighted Citation Impact
- 1.04
Funders
- National Natural Science Foundation of China