Effect of nitrogen content on the static recrystallization and precipitation behaviors of vanadium–titanium microalloyed steels
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Baochun Zhao
,
Tan Zhao
Abstract
Double compression tests were performed on vanadium–titanium microalloyed steels with different nitrogen contents by using a Gleeble-3800 thermo-mechanical simulator to study the softening behaviors of the deformed austenite during different time intervals between the two passes. The static recrystallization fractions were calculated by the stress offset method and static recrystallization diagrams for the tested steels were obtained. The effects of deformation temperature and interval time on the softening behaviors were analyzed. Especially, the effect of nitrogen on the softening behaviors of the tested steels is discussed in detail. The results showed that the softening behaviors of the tested steels with various nitrogen contents are different. As far as the steel with low nitrogen content is concerned, the softening fraction increases monotonically with increasing time interval, and higher temperature can promote the static recrystallization. However, with more nitrogen added into vanadium–titanium microalloyed steel, precipitated particles of vanadium titanium carbonitride can be observed in the tested steel at the temperature of 850 °C or 800 °C, which leads to the formation of plateaus on the softening curves. An increase in nitrogen content in the steel is favorable for vanadium titanium carbonitride precipitation, which leads to a stronger prohibition of static recrystallization and a longer plateau on the softening curves. Moreover, the precipitated particles in the tested steel will not play an inhibition role in static recrystallization until the nitrogen content in the steel reaches a critical value.
Acknowledgments
Comments and suggestions of the anonymous reviewers are greatly acknowledged.
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Research ethics: Not applicable.
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Author contributions: The authors have accepted responsibility for the entire content of this manuscript and approved its submission.
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Competing interests: The authors state no conflict of interest.
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Research funding: The National Natural Science Foundation of Liaoning Province, China (2022-BS-359).
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Data availability: The raw data can be obtained on request from the corresponding author.
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Articles in the same Issue
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- Original Papers
- Experimental investigation and thermodynamic analysis of TiC–Fe cermets with Mo additions
- Investigations on porous silicon nitride ceramics prepared by the gel-casting method
- Catalysis effect of rare earth element Ce on paste boriding treatment of AISI 410 steel
- Effect of nitrogen content on the static recrystallization and precipitation behaviors of vanadium–titanium microalloyed steels
- Effects of addition of Er and Zr on microstructure and mechanical properties of Al–Cu–Mn–Si–Mg alloy
- The quasi-binary phase diagrams of R 2Fe14B–Ce2Fe14B (R = Nd, Pr) systems
- Trivalent Gd incorporated Zn2SiO4 phosphor material for EPR and luminescence investigations
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- Blast protection of underwater tunnels with 3D auxetic materials
- News
- DGM – Deutsche Gesellschaft für Materialkunde
Articles in the same Issue
- Frontmatter
- Original Papers
- Experimental investigation and thermodynamic analysis of TiC–Fe cermets with Mo additions
- Investigations on porous silicon nitride ceramics prepared by the gel-casting method
- Catalysis effect of rare earth element Ce on paste boriding treatment of AISI 410 steel
- Effect of nitrogen content on the static recrystallization and precipitation behaviors of vanadium–titanium microalloyed steels
- Effects of addition of Er and Zr on microstructure and mechanical properties of Al–Cu–Mn–Si–Mg alloy
- The quasi-binary phase diagrams of R 2Fe14B–Ce2Fe14B (R = Nd, Pr) systems
- Trivalent Gd incorporated Zn2SiO4 phosphor material for EPR and luminescence investigations
- Effects of translaminar edge crack and fiber angle on fracture toughness and crack propagation behaviors of laminated carbon fiber composites
- Blast protection of underwater tunnels with 3D auxetic materials
- News
- DGM – Deutsche Gesellschaft für Materialkunde
