Effect of an Overequilibrium Nitrogen Content on the Structure, Phase Composition, and Mechanical Properties of Low-Alloy Steel

The structure, phase composition, static strength, and impact toughness of 10Kh3A steel of two heats with a nitrogen content higher than the solubility limit under standard conditions (from here on, overequilibrium content of 0.105 and 0.173% N at [C] + [N] = 0.26 and 0.3%, respectively) are studied. The steel is produced by electroslag remelting under nitrogen pressure (ESRP). The effect of this method on the inclusion cleanliness of steel in...