钒钢的技术进展

 介绍了V在钢中的应用及V微合金化技术最新进展。通过含V钢中增N，利用廉价的N元素，优化了V的析出，显著提高沉淀强化效果，达到节约V用量及降低成本的目的。V-N钢中V（C，N）在奥氏体中析出，起到晶内铁素体核心作用，明显细化铁素体晶粒。V在贝氏体中的析出起到明显强化作用，提高了贝氏体的强度。V-N微合金化技术在高强度钢筋、高强度型钢、非调质钢、薄板坯连铸连轧高强度带钢等产品中获得广泛应用。

Recent Development of Vanadium Microalloying Technology

Recent developments of V microalloying technology and its applications in HSLA steels were reviewed. Enhanced-nitrogen in V-containing steel can promote precipitation of fine V(C, N) particles, and improve markedly precipitation strengthening effectiveness of vanadium, therefore, there is a significant saving of V addition in the same strength requirement. Vanadium can be used effectively for ferrite grain refinement by the nucleation of intragranular ferrite promoted by VN precipitates in Austenite. Nanoscale V(C, N) particles can be precipitated in bainitic ferrite matrix over a broad temperature, and the precipitation strengthening might be successfully applied in bainitic steels. V-N process is a cost-effective way for high strength rebars, section steels, forging steels and thin slab direct rolling strips.