Dendrite corrosion of 316L stainless steel weld joint in NaCl–MgCl2 molten salt loop
Source abstract
Abstract
One major concern in molten salt reactor (MSR) is structural material corrosion. In this study, the corrosion performance of 316L stainless steel weld joint in NaCl–MgCl 2 eutectic molten salt loop was studied and compared with its base metal. The corrosion of 316L stainless steel in a molten salt loop appears to create voids. The created voids appear densely in base metal while spread discretely as dendritic structures in the weld joint.
Source: openalex_inverted_index · Quality: baseline
Research context
OpenAlex topics: Aluminum Alloy Microstructure Properties · Molten salt chemistry and electrochemical processes · Hydrogen embrittlement and corrosion behaviors in metals
SciVX discovery tags are terminology-based. OpenAlex topics are source-provided classifications.
References (26)
Show source-provided references
1. Serp, J. et al. The molten salt reactor (MSR) in generation IV: overview and perspectives. Prog. Nucl. Energy 77, 308–319 (2014).10.1016/j.pnucene.2014.02.014 ↗
2. Mignacca, B. & Locatelli, G. Economics and finance of molten salt reactors. Prog. Nucl. Energy 129, 103503 (2020).10.1016/j.pnucene.2020.103503 ↗
3. Wang, Y., Sridharan, K. & Couet, A. Method for identification of redox control parameters for corrosion mitigation in molten fluoride salts. J. Nucl. Mater. 543, 152624 (2021).10.1016/j.jnucmat.2020.152624 ↗
4. Williams, D. F., Louis, M. T., & Kevin, T. C. Assessment of Candidate Molten Salt Coolants for the Advanced High Temperature Reactor (Ahtr) (United States, Department of Energy, 2006).10.2172/885975 ↗
5. Elbakhshwan, M. et al. Corrosion and thermal stability of CrMnFeNi high entropy alloy in molten FLiBe salt. Sci. Rep. 9, 1–10 (2019).10.1038/s41598-019-55653-2 ↗
6. Wang, Y., et al. Integrated high‐throughput and machine learning methods to accelerate discovery of molten salt corrosion‐resistant alloys. Adv. Sci. 9, 2200370 (2022).10.1002/advs.202200370 ↗
7. Olson, L. C., James, W. A., Sridharan, K., Anderson, M. H. & Allen, T. R. Materials corrosion in molten LiF–NaF–KF salt. J. Fluor. Chem. 130, 67–73 (2009).10.1016/j.jfluchem.2008.05.008 ↗
8. Dai, Q. et al. Corrosion of Incoloy 800H alloys with nickel cladding in FLiNaK salts at 850 °C. Corros. Sci. 133, 349–357 (2018).10.1016/j.corsci.2018.01.026 ↗
9. Yin, H. et al. Effect of CrF3 on the corrosion behaviour of Hastelloy-N and 316L stainless steel alloys in FLiNaK molten salt. Corros. Sci. 131, 355–364 (2018).10.1016/j.corsci.2017.12.008 ↗
10. Wang, J.-W., Zhou, H.-X., Zhang, C.-Z., Liu, W.-N. & Zhao, B.-Y. Influence of MgCl2 content on corrosion behavior of GH1140 in molten NaCl–MgCl2 as thermal storage medium. Sol. Energy Mater. Sol. Cells 179, 194–201 (2018).10.1016/j.solmat.2017.11.014 ↗
11. Zhang, J. et al. Redox potential control in molten salt systems for corrosion mitigation. Corros. Sci. 144, 44–53 (2018).10.1016/j.corsci.2018.08.035 ↗
12. Manly, W. D. et al. AIRCRAFT REACTOR EXPERIMENT—METALLURGICAL ASPECTS. No. ORNL-2349 (Oak Ridge National Lab., Tennessee, 1958).10.2172/4227617 ↗
13. Frye, J. H., Manly, W. D. & Cunningham, J. E. Metallurgy Division Annual Progress Report, ORNL-2422 (Oak Ridge National Laboratory, Oak Ridge, 1957).
14. Koger, J. W. Evaluation of Hastelloy N Alloys After Nine Years Exposure to Both a Molten Fluoride Salt and Air at Temperatures from 700 to 560 0 C. No. ORNL-TM-4189 (Oak Ridge National Lab., 1972).10.2172/4468052 ↗
15. Raiman, S. et al. Corrosion of 316H Stainless Steel in Flowing FLiNaK Salt. J. Nucl. Mater. 561, 153551 (2021).10.1016/j.jnucmat.2022.153551 ↗
16. Yang, X. et al. Corrosion behavior of GH3535 alloy in molten LiF–BeF2 salt. Corros. Sci. 199, 110168 (2022).10.1016/j.corsci.2022.110168 ↗
17. Wang, Y. et al. Radionuclide tracing based in situ corrosion and mass transport monitoring of 316L stainless steel in a molten salt closed loop. Nat. Commun. 15, 3106 (2024).10.1038/s41467-024-47259-8 ↗
18. Kelleher, B. C., Sean, F. G. & Ivan, G. M. Thermal gradient mass transport corrosion in NaCl–MgCl2 and MgCl2–NaCl–KCl molten salts. Mater. Today Commun. 33, 104358 (2022).10.1016/j.mtcomm.2022.104358 ↗
19. Zhu, Y. et al. Effects of SO42− ions on the corrosion of GH3535 weld joint in FLiNaK molten salt. J. Nucl. Mater. 492, 122–127 (2017).10.1016/j.jnucmat.2017.05.020 ↗
20. Zheng, G. & Sridharan, K. Corrosion of structural alloys in high-temperature molten fluoride salts for applications in molten salt reactors. JOM 70, 1535–1541 (2018).10.1007/s11837-018-2981-2 ↗
21. Yang, Y. et al. One dimensional wormhole corrosion in metals. Nat. Commun. 14, 988 (2023).10.1038/s41467-023-36588-9 ↗
22. Ambrosek, J. W. Molten Chloride Salts for Heat Transfer in Nuclear Systems (University of Wisconsin, Madison, 2011).
23. Sun, H., Wang, J., Li, Z., Zhang, P. & Su, X. Corrosion behavior of 316SS and Ni-based alloys in a ternary NaCl–KCl–MgCl2 molten salt. Sol. Energy 171, 320–329 (2018).10.1016/j.solener.2018.06.094 ↗
24. Lu, P., Liu, Q., Bao, H., Pan, T. J. & Tang, Z. Effect of FeCl3 in NaCl–MgCl2 molten salts on the corrosion behavior of 316 stainless steel at 600 C. Corros. Sci. 212, 110961 (2023).10.1016/j.corsci.2023.110961 ↗
25. Ghaznavi, T., Persaud, S. Y. & Newman, R. C. The effect of temperature on dealloying mechanisms in molten salt corrosion. J. Electrochem. Soc. 169, 111506 (2022).10.1149/1945-7111/aca07e ↗
26. Liu, X. et al. Formation of three-dimensional bicontinuous structures via molten salt dealloying studied in real-time by in situ synchrotron X-ray nano-tomography. Nat. Commun. 12, 3441 (2021).10.1038/s41467-021-23598-8 ↗