The present investigations on generative manufacturing using metallic materials pursue the idea of transferring the microscopic structural morphology of a dual-phase steel in modified form to the macroscopic level. The aim is to be able to join materials of different lattice modifications and to combine their positive properties. This applies in particular to the combination of high tensile strength and good formability. For this investigation, a specimen was created from a high-strength ferritic/martensitic (25%) and an austenitic (75%) material with a defined welding sequence. The specimen was deliberately manufactured anisotropically using welding layers in order to quantify its properties. Tensile tests were performed on specimens with different weld seam orientations to determine the direction-dependent properties. As can be proven by the results, the application of welding processes with different materials results in an anisotropic behaviour in generative manufacturing. With regard to tensile strength and elongation, there is an integral value of the mechanical-technological properties of both base materials. The existing anisotropy can be utilized with regard to the design by adapting the alignment of the weld layers to the load.

中文翻译：

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增材制造中的多材料设计-可行性验证

目前对使用金属材料进行的生产制造的研究追求将双相钢的微观结构形态以改性形式转移到宏观水平的想法。目的是能够连接不同晶格修饰的材料并结合它们的积极特性。这尤其适用于高拉伸强度和良好成型性的结合。为了进行此研究，从高强度铁素体/马氏体（25％）和奥氏体（75％）材料中按规定的焊接顺序制作了一个试样。为了量化其特性，特意使用焊接层各向异性制造了样品。对具有不同焊缝方向的试样进行拉伸测试，以确定方向相关的性能。结果可以证明，采用不同材料的焊接工艺的应用会导致生成制造中的各向异性行为。关于拉伸强度和伸长率，两种基材的机械技术性能具有不可分割的值。通过使焊接层的对准适应载荷，可以在设计方面利用现有的各向异性。