Abstract
The results of investigations of the treatment conditions influence on the regularities of structural-phase transformations, microstructure and mechanical properties of heat-resistant low-activation 12 % chromium ferritic-martensitic steel EK-181 are summarized. The physical factors responsible for increasing the yield strength of steel, the relationship of microstructure features with strength and plastic properties are revealed. The regularities of plastic deformation of steel are established. The modes of step-by-step heat treatment (SHT) and high-temperature thermomechanical treatment (HTMT) are presented, which lead to the formation of structural states with high values of dispersion and volume fraction of nanoscale particles V(C, N), dislocation density and internal stresses. These modes provide a significant (by ≈ 20 %) increase in the strength properties of steel in a wide (from –196 to 800 °C) temperature range, while maintaining a sufficient reserve of plasticity and increasing its thermal stability, compared with the traditional heat treatment mode (THT).
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a callDisclaimer: All third-party content on this website/platform is and will remain the property of their respective owners and is provided on "as is" basis without any warranties, express or implied. Use of third-party content does not indicate any affiliation, sponsorship with or endorsement by them. Any references to third-party content is to identify the corresponding services and shall be considered fair use under The CopyrightLaw.
