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Title: Corrosion and Thermal Stability of CrMnFeNi High Entropy Alloy in Molten FLiBe Salt

Journal Article · · Scientific Reports

The corrosion behavior of the FCC Cr18Mn27Fe27.5Ni27.5 high entropy alloy (HEA) after exposure to molten FLiBe salt at 700 °C for 1000 hours, has been investigated. Results show that the HEA lost a higher mass compared to the reference 316 H stainless steel due to the dissolution of Mn into the molten salt. The loss of Mn from the alloy appeared to discourage the dissolution of Cr in the molten fluoride salts which is widely recognized as the mechanism of corrosion degradation. Thermal exposure at 700 °C for 1000 hours also led to the precipitation of an additional BCC phase Cr67Fe13Mn18.5Ni1.5, which was confirmed by CALPHAD predictions.

Research Organization:
Massachusetts Inst. of Technology (MIT), Cambridge, MA (United States); Texas A & M Univ., College Station, TX (United States). Texas A & M Engineering Experiment Station; Univ. of Wisconsin, Madison, WI (United States)
Sponsoring Organization:
USDOE Office of Nuclear Energy (NE), Nuclear Energy University Program (NEUP); National Science Foundation (NSF)
Grant/Contract Number:
NE0008285; NE0008651; NE0008678; NE0008803
OSTI ID:
1624517
Journal Information:
Scientific Reports, Vol. 9, Issue 1; ISSN 2045-2322
Publisher:
Nature Publishing GroupCopyright Statement
Country of Publication:
United States
Language:
English
Citation Metrics:
Cited by: 27 works
Citation information provided by
Web of Science

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