控制轧制使钢材强韧化的实质就是通过调整各轧制工艺参数(如:钢坯加热温度、变形量、终轧温度、轧后冷却等)来控制钢在整个轧制过程中的冶金学过程(如:奥氏体的再结晶、合金元素及其碳、氮化物的固溶和析出、相变、加工硬化、织构等),最终达到控制钢材组织和性能的目的。控制轧制使钢材强韧化的机理主要有:1.晶粒细化对于铁素体+珠光体型钢,铁素体晶粒的大小与钢材强度和韧性的关系,可用 The essence of the control rolling of the steel toughening is through the adjustment of the rolling process parameters (such as: billet heating temperature, deformation, finishing temperature, cooling after rolling, etc.) to control the steel throughout the metallurgical process of rolling process (Such as austenite recrystallization, alloying elements and their carbon, nitride solution and precipitation, transformation, work hardening, texture, etc.), and ultimately to achieve the purpose of controlling the structure and properties of steel. The main mechanisms that control the rolling of the steel toughening are: 1. Grain refinement for ferrite + pearlite steel, ferrite grain size and the relationship between steel strength and toughness, available