本世纪五十年代就已知道,适当控制热变形及其后的冷却能获得优异的组织与性能。但至今热变形仍主要作为成形手段,而未作为组织与性能的控制手段加以利用。控制热变形及冷却在获得优异性能及节约能源方面的潜力受到工业忽视,恰恰后者相当大程度决定了一种材料实施这一工艺的可能性及产品质量(包括组织、性能及尺寸的精确度等)的稳定性。从六十年代末开始,这一课题获得了重要的进展。热变形条件下的力学行为指的是不同变形温度及应变速率下的流变曲线,利用这一资料可以估算轧制 It has been known since the 1950s that proper control of thermal deformation and subsequent cooling can result in excellent microstructure and properties. But so far the thermal deformation is still mainly as a means of forming, but not as a means of controlling the organization and performance to be used. The potential for controlling thermal deformation and cooling for superior performance and energy savings is neglected by the industry, which is to a large extent largely determined by the material’s likelihood of implementing the process and product quality (including the accuracy of the organization, performance and dimensions Etc.) stability. Since the late 1960s, this topic has made important progress. Mechanical behavior under thermal deformation refers to the rheological curves at different deformation temperatures and strain rates, which can be used to estimate the rolling