“…The effect of H on high-strength steels has been widely studied [ 5 , 6 , 18 , 19 , 20 , 21 , 22 , 23 , 24 , 25 , 26 , 27 , 28 , 29 , 30 , 31 , 32 , 33 , 34 , 35 ], but there are few studies regarding the interaction between H and CP steels. Malitckii et al [ 32 ] investigated the role of retained austenite in CP steel and proposed that fatigue intergranular areas might be formed due to H accumulation at the austenite/martensite interfaces, followed by H-induced decohesion.…”