[en] Structure, mechanical properties and recrystallization of maraging 03Kh11N10M2T and 03N18M4T steels subjected to thermomechanical treatment are studied. A notable thermomechanical treatment effect on the character of titanium carbonitride distribution in slow-cooled steels is ascertained. The thermomechanical treatment proposed allows one to increase the 03 Kh11N10M2T steel impact strength 3 times and that one of the 03N18M4T steel - two times without reducing the strength characteristics. The cooling rate and thermomechanical treatment effect on the recrystallization processes is shown