中文摘要：

对CR340冷轧差厚板系列退火工艺进行实验研究,对比分析了不同退火工艺对差厚板不同厚度区组织和性能的影响,探究差厚板退火性能差异化的原因.结果表明：差厚板不同厚度区的组织性能差异取决于冷轧变形量、退火温度和保温时间.通过拟合实验数据建立了差厚板不同厚度区退火温度和保温时间与最终屈服强度和延伸率的对应关系,回归了差厚板退火后硬度与屈服强度的函数关系,为冷轧差厚板退火工艺的制定及组织性能控制提供了参考数据.

英文摘要：

A series of experiments of annealing for tailor rolled blank （TRB） of CR340 were carried out in order to study the microstructure and properties. The effects of the annealing temperature and time on the microstructure and properties of TRB in the area with different thickness were analyzed, and the reasons of different properties of TRB after annealing were explored. The results showed that differences of the microstructure and properties of TRB were determined by the amount of cold deformation, annealing temperature and holding time. By fitting the experimental data, the corresponding relationship between the yield strength and the elongation of TRB in the area of different thickness and the annealing temperature and holding time, and the function of the hardness and yield strength of TRB after annealing were established, which provide a reference for formulating the annealing processes and controlling microstructure and properties of TRB.