Property control during spinning of metastable austenites

研究项目的总体目标是实现纺丝过程中的性能控制。这是为了在一个以大量工艺参数和难以预测的工艺顺序为特征的环境中，实现局部有限和可重复的物理组件特性调整。通过在生产过程中具体影响相变过程，将创建具有定义的分级机械（硬度）或铁磁性的高性能组件，从而提供附加价值，例如在感官使用方面。对分级的局部分辨率提出了很高的要求，对形状和尺寸精度以及表面质量也提出了很高的要求。因此，在纺丝过程中，通过对参数温度和成形程度的控制过程管理来创建局部有限区域，以尽可能精确和可复制地满足指定的性能概况。在项目的三个阶段中，要考虑的组件和过程步骤的复杂性的增加是计划好的。可以为即将到来的资助期定义以下子目标：•强化产权控制过程，以证明产权控制对其他材料批次和材料的可转移性。•从轴向（1D）和轴向角（2D）渐变结构过渡到径向渐变结构（3D），增加了复杂性。•考虑到类似生产条件下的实时能力，性能控制的进步和优化。•基于性能控制组件的性能增强的量化证据。以系统化和系统化的形式推导出性能控制挤压工艺的设计原则。

The overall objective of the research project is the realisation of a property control within spinning processes. This is intended to enable the locally limited and reproducible adjustment of physical component properties - in an environment characterised by a large number of process parameters and a process sequence that can hardly be predicted. By specifically influencing phase transformation processes during production, high-performance components are to be created that have defined graded mechanical (hardness) or ferromagnetic properties and thus offer added value, e.g. with regard to sensory use. Very high demands are placed on the local resolution of the grading, but also on the shape and dimensional accuracy as well as the surface quality. Within the spinning process, therefore, locally limited areas are to be created through controlled process management of the parameters temperature and degree of forming, which fulfil a specified property profile as precisely and reproducible as possible. An increase in the complexity of the components and process steps to be considered is planned during the three phases of the project. The following sub-goals could be defined for the upcoming funding period: • Robustification of the property-controlled process to demonstrate the transferability of property control to other material batches and materials. • Increasing complexity by transitioning from axial (1D) and axial-angular (2D) graded structures to additionally radial graded structures (3D). • Advancement and optimization of property control considering real-time capability under production-like conditions. • Quantified evidence of property enhancement based on components produced with property control. • Derivation of design principles for the property-controlled extrusion process in the form of systematization and methodization.