Additive manufacturing and processing by forming of Al-Ti metallic composites

通过形成 Al-Ti 金属复合材料进行增材制造和加工

• 批准号: 432161145
• 负责人: Professorin Dr.-Ing. Birgit Awiszus
• 金额: --
• 依托单位: Professur Werkstoff- und Oberflächentechnik
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2020
• 资助国家: 德国
• 起止时间: 2019-12-31 至 2022-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/432161145?language=en
• 关键词: Additive; manufacturing; processing; forming; Al

The purpose of this project is a fundamental understanding of the production and formability of additive manufactured Al-Ti metallic composites. For the first time, such composites are produced from aluminum and titanium by cold gas spraying and are hot-formed by die forging. First of all, the spray parameters have to be determined that layers with low porosity can be produced. In order to correspond to the nature of an additive manufacturing of solids, a large layer thickness has to be realised. That means an extension beyond the limits of previously produced thermal sprayed layer thicknesses.Since no information is available on the forming of cold gas sprayed coatings, their forming behaviour under realistic conditions is to be characterized. Therefore, the sprayed composites are formed under different process parameters and stress conditions by die forging. The microstructure and mechanical properties are evaluated on both, the composites produced and the subsequently formed composites using different investigation techniques. This allows the determination and fundamental understanding of the microstructure-property relationship along the entire process chain. In order to transfer the findings to further investigations, the numerical modeling of the forming process is performed on the basis of the determined mechanical properties and considering the actual solid structure.

该项目的目的是对增材制造的Al-Ti金属复合材料的生产和成形性有基本的了解。这种复合材料首次通过冷气喷涂由铝和钛制成，并通过模锻热成型。首先，必须确定喷涂参数，以便可以生产具有低孔隙率的层。为了对应于固体的增材制造的性质，必须实现大的层厚度。这意味着超出了以前生产的热喷涂层厚度的限制。由于没有关于冷气喷涂层形成的信息，因此需要表征其在实际条件下的形成行为。因此，在不同的工艺参数和应力条件下，通过模锻成形喷涂复合材料。的微观结构和力学性能进行了评估，所产生的复合材料和随后形成的复合材料，使用不同的调查技术。这允许沿着整个工艺链确定和基本理解微观结构-性质关系。为了将研究结果转移到进一步的研究中，在确定的机械性能的基础上并考虑实际的固体结构，进行成形过程的数值模拟。