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发展Ti—V微合金化钢是希望把Ti钢良好的抗晶粒粗化特性与钒的有效析出强化作用（尤其是钒与氮相结合时）结合起来。本研究目的在于确定V和多余的N对含Ti钢晶粒粗化抗力损害的程度以及Ti的存在是否降低V（C,N）析出强化的作用。 已经发现,在铸态下,Ti—V—N钢的晶粒粗化温度（GCT）只在一定程度上低于仅含Ti的钢。但是,在热轧材料中,细小的V（C,N）以及（Ti,V）N的存在。将使其抑制晶粒长大的作用减小。在热轧过程中或热轧之后,其有效的抑制奥氏体晶粒长大的作用使Ti—V—N钢特别适于再结晶轧制,即采用900～1000℃终轧的普通轧制工艺就能得到比较细小的热轧铁索体晶粒。另外,当有Ti存在时,V和N析出强化的能力会有所降低、其原因之一是。部分钒与钛结合成在高温下能抑制晶拉长大的、稳定的（Ti,V）N质点;另一个原因是,在热轧后的奥氏体中,V（C,N）附着沉淀在原已存在的（Ti,V）N质点上。这两个原因都使铁素体中产生析出强化作用的有效V和N的数量减少。
The development of Ti-V microalloyed steels is expected to combine the good resistance to grain coarsening of Ti steels with the effective precipitation strengthening of vanadium, especially when vanadium is combined with nitrogen. The purpose of this study was to determine the extent to which V and extra N could impair the coarsening resistance of Ti-containing steel grains and whether the presence of Ti decreased the precipitation strengthening of V (C, N). It has been found that the grain coarsening temperature (GCT) of Ti-V-N steels is only somewhat lower than that of Ti-only steels only in as-cast form. However, the fine V (C, N) and (Ti, V) N are present in the hot rolled material. Will make it reduce the role of grain growth. Ti-V-N steel is particularly suitable for recrystallization rolling during its hot rolling or after hot rolling, which effectively inhibits the austenite grain growth, that is, ordinary rolling with finish rolling at 900-1000 ° C Process will be able to get more small hot-rolled ferrite crystal grain. In addition, when Ti is present, the ability of V and N precipitation strengthening will be reduced, one of the reasons is. Some of the vanadium and titanium combine to form stable (Ti, V) N particles that inhibit the crystal growth at high temperatures. Another reason is that V (C, N) precipitates in austenite after hot rolling On the existing (Ti, V) N particles. Both of these causes a reduction in the amount of effective V and N that produce precipitation strengthening in the ferrite.