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一、引言 已经公认,控制轧制微合金钢中的变形奥氏体状态对冷却过程中析出的多边形铁素体的形状和尺寸有重大的影响。但奇怪的是对这类钢中的奥氏体-铁素体的等温转变方面却研究得很少。业已公认,铁素体形成时的伴生碳氮化物沉淀对转变动力学发生影响。霍尼库姆(Honeycombe)详细地研究了铌、钒、钼、钨、碳和氮不同组合含
I. INTRODUCTION It has been recognized that the state of deformed austenite in controlled rolled microalloyed steel has a significant influence on the shape and size of polygonal ferrite precipitated during cooling. But it is strange that little has been done on the isothermal transformation of austenite-ferrite in this type of steel. It has been recognized that the formation of ferrite associated with carbonitride precipitation on the transformation kinetics. Honeycombe studied in detail the different combinations of niobium, vanadium, molybdenum, tungsten, carbon and nitrogen with