The microstructure and its distribution along radius of V-N microalloyed hot rolled ribbed bar were observed by means of optical microscope and SEM.

• 通过用金相、扫描电镜等方法观察得出,钒氮微合金化热轧带肋钢筋肋部主要由细小的铁素体晶粒、片层较细的珠光体和少量离异珠光体组成;