Effect of vanadium and niobium on phase transformations in chromium-nickel-molybdenum shipbuilding steel.

Abstract

The effect of microalloying with niobium and vanadium on phase transformations and the structure of chromium-nickel-molybdenum steel during hardening, including after previous hot plastic deformation, has been studied. A low-carbon chromium-nickel-molybdenum steel with a different content of alloying and microalloying elements was chosen as the object of study. The performed studies made it possible to establish the regularities of the influence of microalloying additives, hot plastic deformation and grain size on phase transformations and structural features of chromium-nickel-molybdenum steel. The results of the study could be used to improve known technologies or create some new types of production