fig6

Figure 6. Enhanced HE resistance of FeCoCrNiMn HEA system via regulation of microstructural features. (A and B) Hydrogen-induced gradient NT structures (electrochemical hydrogen charging and tension) (Reproduced with permission^[63]. Copyright 2018, Elsevier) (Reproduced with permission^[66]. Copyright 2022, Elsevier). (C and D) Fine grain structures (gas hydrogen charging and tension) (Reproduced with permission^[64]. Copyright 2019, Elsevier). (E and F) Modified cellular structures (electrochemical hydrogen charging and tension) (Reproduced with permission^[67]. Copyright 2021, Elsevier). HE: Hydrogen embrittlement; HEA: high entropy alloy.