Modeling and control of damage evolution in caliber hot rolling of steel rods (A01)

子项目的目的是为在不同加工策略下的口径轧制过程中发生的损伤发展提供经过验证的评估方法，以允许最小损伤的加工顺序布局。因此，利用常用损伤模型确定了管径轧制过程中载荷状态的变化范围及其对损伤演化的影响，并根据需要进行了评估和扩展。为了考虑损伤在相应的大块成形工艺链上的演化，制备了不同损伤程度的16MnCrS5半成品，并通过挤压进行进一步加工。

The aim of the subproject is to provide methods for a verified evaluation of damage development occurring during caliber rolling with different processing strategies in order to allow for a process sequence layout with minimum resulting damage. Therefore, the variation range of the load regime in caliber rolling as well as its influence on damage evolution is determined using common damage models that are evaluated and extended as required. In order to consider damage evolution over a relevant bulk forming process chain, semi-finished products made from 16MnCrS5 with different degrees of damage are produced to be further processed via extrusion.