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Meeting 2021 TMS Annual Meeting & Exhibition
Symposium Corrosion in Heavy Liquid Metals for Energy Systems
Presentation Title Liquid metal embrittlement of Al-containing high-entropy alloys exposed to lead-bismuth eutectic
Author(s) Xing Gong
On-Site Speaker (Planned) Xing Gong
Abstract Scope The liquid metal embrittlement (LME) susceptibility of two Al-containing high entropy alloys (HEAs), i.e. fcc Al0.4CoCrFeNi and fcc+bcc Al0.7CoCrFeNi (at%), exposed to oxygen-enriched LBE at 350 and 500℃ was tested using slow strain rate tensile tests. The reference tests were done in Ar. The results show that the Al0.4CoCrFeNi alloy is not susceptible to embrittlement, while the Al0.7CoCrFeNi alloy is severely embrittled by LBE at both temperatures. The post-test microstructural examinations reveal that the LME cracks propagate either in the bcc phase or along the bcc/fcc phase boundaries. The phase boundary cracking becomes more prevailing at 500oC than at 350oC, likely resulting from enhanced grain boundary wetting or diffusion. It can be concluded, therefore, that the fcc phase is not susceptible to LME, while the bcc phase can be embrittled, and especially the bcc/fcc phase boundaries are weak points to be attacked by LBE at elevated temperature.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, Environmental Effects, Mechanical Properties

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Anubis Multiphysics: A Neutronics-Thermal Hydraulics Coupling Platform for Flow Accelerated Corrosion Modeling in Reactor Conditions
Behaviour of spallation, activation and fission products in LBE
Compatibility of Alumina-Forming Austenitic Steels in Static and Flowing Pb
Corrosion behaviour and microstructural stability of alumina-forming austenitic steels exposed to oxygen-containing molten lead
Corrosion Investigations of Materials in Antimony-Tin And Antimony-Bismuth Alloys For Liquid Metal Batteries
Corrosion of Refractory Metals and Advanced Steels in Lead-Bismuth Eutectic
Electromagnetic Flow Sensor for Heavy Liquid Metals for Energy Systems
Engineering Model of the Kinetics of the Steel Oxide Layer in A Flow of a Heavy Liquid Metal Coolant Under Various Oxygen Conditions
Exposure Tests of Different Materials in Liquid Lead for LFRs: Effect of the Dissolved Oxygen on Corrosion
Fundamental Interactions of Steels and Nickel-based Alloys with Lead-based Liquid Alloys or Liquid Tin
In-Situ Crack Growth Testing in a Liquid Metal Environments
Investigation on the evaporation rate of liquid lead and radioisotope retention capability of molten lead as coolant
Liquid metal embrittlement of Al-containing high-entropy alloys exposed to lead-bismuth eutectic
Material Needs and Developments for the Westinghouse Lead Fast Reactor
Materials Compatibility Testing with Molten Lead up to 700C
Numerical and Analytical Researches of the Formation and Accumulation of Deposits on the Circuit with HLM Coolant within the Consistent Model for Physical and Chemical Processes
Numerical modelling of coolant chemistry in lead bismuth eutectic cooled nuclear reactors
Oxide Growth Modeling in Fe-Cr-Al Alloys: A Current Review
Performance of Candidate Alloys at 500C in Flowing Lead
PILLAR: Pool-type Integral Leading facility for Lead-alloy cooled Advanced small modular Reactor, and Its Use for Natural Convection Study and Corrosion
Preliminary results on the compatibility of Fe-Cr-Al and Fe-Cr-Al-Mo steels with liquid sodium at 700 C.
Progress in LBE chemistry control and measurement techniques for MYRRHA
Review of Liquid Metal Corrosion Under Irradiation and Progress Report on the LBE-Irradiation-Corrosion Experiment (ICE)

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