“…High-strength steel has attracted extensive attention due to its great technological importance in the fields of aerospace, oceanics, transportation, and energy. 1,2 However, its service safety is seriously subjected to the threat of hydrogen embrittlement (HE) since the failures induced by HE are usually transient and catastrophic. 3,4 Therefore, how to mitigate HE is the key issue for the broad application of high-strength steels.…”