Extrusion of tailored magnesium blanks

创新的轻量化设计对产品特性的要求越来越高，而单一的同质材料无法满足这些要求。为了满足这一需求，新的发展和工艺策略集中在混合材料以及定制坯料上，这在钢铁行业是众所周知的。所提出的建议的目的是在建模的过程中，使挤压镁型材与定制的性能。一方面，将开发由两种镁合金组成的具有简单和复杂几何形状的扁平型材的制造工艺。另一方面，将设计一种成形工艺，以便在挤压过程中生产具有局部可变轮廓几何形状的扁平镁型材。通过有限元模拟，实现了型材几何形状沿挤压方向和横向沿着的局部变化。通过表征其微观结构和机械性能作为工艺参数的函数，对实验生产的扁平镁型材进行分析。

The innovative lightweight design increasingly requires product features, which cannot be fulfilled by a single material with homogeneous properties. In order to satisfy that demand new developments and process strategies focus on hybrid materials as well as tailored blanks, which are well known from the steel industry. The presented proposal aims at the modeling of a process enabling the extrusion of flat magnesium profiles with tailored properties. On the one hand a manufacturing process of flat profiles featuring simple and complex geometry, which are composed of two magnesium alloys will be developed. On the other hand a forming process will be designed in order to produce flat magnesium profiles with locally variable profile geometries during the extrusion. The local variation of the profile geometry will be realized along both the extrusion direction and the transverse direction.The modeling of the forming processes will be performed by FE-simulation. The experimentally produced flat magnesium profiles will be analyzed by characterizing its microstructures and mechanical properties as a function of the process parameters.