fig6
![Environmental embrittlement behavior of high-entropy alloys](https://image.oaes.cc/c78f1667-7c2f-4c0b-b6c3-341f040ed3a9/5306.fig.6.jpg)
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.