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- Title
Effect of Vanadium on the Hot Deformation Behavior of Vanadium-Microalloyed Steel for Thin Slab Direct Rolling.
- Authors
Lee, Chang; Seong, Hwan; Cooman, Bruno
- Abstract
The effects of V on hot deformation properties of low-carbon steel were investigated in the temperature range of 1173 K to 1473 K (900 °C to 1200 °C) and for strain rates from 0.1 to 5 s for compositions with a V content in the range of 0 to 0.125 wt pct. The critical stress and strain for dynamic recrystallization (DRX) initiation were obtained from the stress dependence of the strain hardening rate. The hot deformation properties of V-alloyed steel were studied in function of the temperature-corrected strain rate. The experimental results were used to construct a kinetic model of DRX. V was found to have no influence on the hot deformation properties for V contents less than 0.125 pct, indicating the absence of both solute drag and precipitation effects at low V content. When the V content reached 0.125 wt pct, the activation energy for DRX increased and DRX was suppressed in high strain rate condition.
- Subjects
CARBON steel corrosion; VANADIUM metallurgy; DEFORMATIONS (Mechanics); ACTIVATION energy; STEEL walls
- Publication
Metallurgical & Materials Transactions. Part A, 2016, Vol 47, Issue 7, p3649
- ISSN
1073-5623
- Publication type
Article
- DOI
10.1007/s11661-016-3512-9