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前言目前,世界各国钒、钛、铌微合金化钢发展很快,已成为低合金钢发展的一个重要途径。由于钒、钛、铌是我国富有的合金元素,我国从1959年就开始应用钒、钛、铌研制低合金钢新钢号,目前已取得了可喜的成果,有了一个良好的开端,今后应该加快发展速度。过去,低合金钢发展主要是靠锰、硅等固溶强化途径达到的。由于固溶强化的潜力有限,不得不提高碳的含量,因此恶
Foreword At present, the world’s vanadium, titanium and niobium microalloyed steel rapid development has become an important way for the development of low alloy steel. Since vanadium, titanium and niobium are rich alloying elements in our country, our country started to use vanadium, titanium and niobium to develop new steel grades of low-alloy steel since 1959. At present, we have made gratifying achievements. With a good beginning, Speed up the pace of development. In the past, the development of low-alloy steel mainly by manganese, silicon and other solid solution strengthening approach achieved. Due to the limited potential for solution strengthening, carbon content has to be increased, so it is bad