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首页> 外文期刊>Metallurgical and Materials Transactions, A. Physical Metallurgy and Materials Science >Effect of Vanadium on the Hot Deformation Behavior of Vanadium-Microalloyed Steel for Thin Slab Direct Rolling
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Effect of Vanadium on the Hot Deformation Behavior of Vanadium-Microalloyed Steel for Thin Slab Direct Rolling

机译：钒对薄板坯直接轧制钒微合金钢热变形行为的影响

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摘要

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.
机译：研究了V对低碳钢热变形性能的影响，温度范围为1173 K至1473 K（900 A至1200 A摄氏度），应变速率为0.1至5 s（-1）， V含量在0至0.125wt％范围内的组合物。从应变硬化速率的应力依赖性获得了动态再结晶（DRX）引发的临界应力和应变。研究了V合金钢的热变形性能与温度校正应变率的关系。实验结果用于构建DRX动力学模型。发现当V含量小于0.125 pct时，V对热变形特性没有影响，这表明在低V含量下不存在溶质阻力和沉淀作用。当V含量达到0.125wt％时，在高应变速率条件下DRX的活化能增加并且DRX被抑制。

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