Effect of Vanadium on the Hot Deformation Behavior of Vanadium-Microalloyed Steel for Thin Slab Direct Rolling
SCIE
SCOPUS
- Title
- Effect of Vanadium on the Hot Deformation Behavior of Vanadium-Microalloyed Steel for Thin Slab Direct Rolling
- Authors
- Lee, CW; Seong, HG; De Cooman, BC
- Date Issued
- 2016-07
- Publisher
- SPRINGER
- 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 A degrees C to 1200 A degrees C) and for strain rates from 0.1 to 5 s(-1) 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.
- URI
- https://oasis.postech.ac.kr/handle/2014.oak/36416
- DOI
- 10.1007/S11661-016-3512-9
- ISSN
- 1073-5623
- Article Type
- Article
- Citation
- METALLURGICAL AND MATERIALS TRANSACTIONS A-PHYSICAL METALLURGY AND MATERIALS SCIENCE, vol. 47A, no. 7, page. 3649 - 3663, 2016-07
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