Влияние термомеханической обработки на микроструктуру и механические свойства 12%-ной хромистой ферритно мартенситной стали ЭК-181

Abstract

The features of microstructure and mechanical properties of the EK-181 ferritic-martensitic steel after high-temperature thermomechanical treatment with deformation in the austenite region are investigated. It is shown that as a result of the treatment, the volume fraction of nanosized vanadium carbonitride particles V (C, N) and the dislocation density increase significantly. This modification of the structure leads to an increase in the yield strength of the steel up to 468 MPa at 650 °C.