1. School of Mechanics and Aerospace Engineering, Southwest Jiaotong University, Chengdu 611756, China
2.School of Materials Science and Engineering, Central South University, Changsha 410083, China
The increasing susceptibility to hydroge-embrittlement (HE) with the increase of material strength poses a key challenge in developing materials resistant to this phenomenon. High-entropy alloys (HEAs), characterized by significant localized chemical environment fluctuations and lattice distortions, demonstrate promising hydrogen compatibility. These attributes qualify them as potential candidates for manufacturing high-strength materials capable of withstanding HE. This article reviews the advancements in high-strength and HE-resistant HEAs. It begins by summarizing resistance improving to HE through strategies such as microalloying with non-metallic interstitial elements (e.g., C, N, and B), controlling precipitate phases, adjusting component ratios, and optimizing fabrication processes. The review then covers research on hydrogen absorption and diffusion behaviors, as well as the evolution of deformation microstructures induced by hydrogen in these alloys, and elucidates the mechanisms behind their HE resistance. Lastly, the paper projects future trends in the development of high-strength, toughness and HE-resistance HEAs.