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- Title
Structural Features of Structural Steels Microalloyed with Nitrogen and Vanadium.
- Authors
Panfilova, L.; Smirnov, L.
- Abstract
Results are presented for a study of medium-carbon structural steels for the effect of microalloying with nitrogen, vanadium, and other nitride-forming elements on the microstructure and processes of nitride formation after hardening with tempering and rolling. The level of mechanical properties is compared after different treatment. It is shown that a lower bainite structure forms with high dislocation density after rolling and cooling steel to 550°C. Within ferrite plates there is precipitation of finely dispersed densely located vanadium carbonitride. Strength as a result of good dispersion of the fine lower bainite structure, high dislocation density, and dispersion strengthening with precipitation of nanosize carbonitride phase, provides a high level of mechanical properties after rolling and cooling to 550°C, comparable with the level of properties after hardening and tempering.
- Subjects
STEEL alloys; MICROALLOYING; NITROGEN; VANADIUM; DISLOCATION density
- Publication
Metallurgist, 2015, Vol 58, Issue 9/10, p916
- ISSN
0026-0894
- Publication type
Article
- DOI
10.1007/s11015-015-0017-5