中文摘要：

研究效果大猛抛(尺寸 ?>? 0.2 ? m ) 在导致紧张的动态转变上， V 内容在的变化大猛抛被调查了在二 VTi micro-alloyed 钢的份量上。结果证明高 N 内容在 Ti 的表面上支持了 V 降水大很快猛抛。随后，大猛抛包含导致的 V intragranular 铁酸盐的形成，显著地加速了动态转变过程，支持了铁酸盐的连续动态再结晶的出现并且改进了精炼效果。

英文摘要：

To research the effect of large precipitates（size 〉 0.2 μm） on strain-induced dynamic transformation, the variation of V contents in large precipitates has been investigated quantitatively in two V–Ti micro-alloyed steels. The results showed that high N content promoted V precipitation on the surface of Ti large precipitates rapidly. Subsequently,large precipitates containing V induced the formation of intragranular ferrite, which accelerated the dynamic transformation process remarkably, promoted the occurrence of continuous dynamic recrystallization of ferrite and improved the refinement effect.