Research on Advanced Metal Additive Manufacturing

拟议的研究涉及为金属增材制造的先进应用开发强大的科学基础，旨在满足工业制造中对航空航天和汽车零部件更高灵活性和效率的需求。主要的研究课题将包括：1。多材料增材制造（MMAM）这项研究将支持下一代技术和产品的开发，旨在通过优化零件的机械性能、增强增材制造零件的性能或提供额外的功能，显著改善增材制造（AM）。多材料增材制造（MMAM）代表了一个全新的范例和一系列设计、功能和成本效益高价值产品的机会。MMAM可以在单个制造操作中生产零件及其性能变化，而不是多个步骤。2. 本研究旨在利用人工智能方法显著提高金属增材制造工艺的性能、质量和可重复性。阻碍金属增材制造零件发挥其真正潜力的一个障碍是所生产零件质量的不一致。本研究采用现场监测系统，采用图像、温度读数、声信号等形式。3. 钛铝化物是一类用于航空发动机的金属间化合物。与镍基高温合金相比，钛铝化物具有显著的优势，如高强度、高刚度、良好的蠕变、耐腐蚀和抗氧化性。这些特性与低密度相结合，可以显著减轻部件的结构重量。然而，使用钛铝化物的主要挑战是低延展性和断裂韧性。本研究将通过发展生产具有分级铝化钛微结构的组件的概念来解决这一缺点，这为在组件的不同部分内改变材料特性以满足特定功能提供了独特的机会。

The proposed research deals with developing a strong scientific basis for advanced applications of metal additive manufacturing, aimed at dealing with the increased demand for higher flexibility and efficiency of aerospace and automotive components in industrial manufacturing. The main research topics will include: 1. Multiple Material Additive Manufacturing (MMAM) This research will support the development of next-generation technologies and products aimed at significantly improving Additive Manufacturing (AM) by either optimizing the mechanical properties of the parts, enhancing the performance of AM parts, or providing additional functionality. Multiple material additive manufacturing (MMAM) represents a whole new paradigm and range of opportunities for design, functionality, and cost-effective high value products. MMAM can produce the part and its property variations in a single manufacturing operation instead of multiple steps. 2. Applications of Machine Learning for Defect Detection in L-PBF This research is aimed at significantly improving the performance, quality, and repeatability of metal additive manufacturing processes using artificial intelligence methods. One barrier that restrains metallic AM parts from reaching their true potential is the inconsistency in the quality of parts produced. In this research, in-situ monitoring system which will take the form of images, temperature readings, and acoustic signals will be used. 3. Additive Manufacturing of Graded Microstructures Titanium aluminides are a family of intermetallic compounds used for aircraft engines. As opposed to Ni-based superalloys, titanium aluminides provide significant advantages such as high strength, high stiffness, good creep, corrosion and oxidation resistance. These properties combined with low density can significantly reduce the structural weight of components. However, the key challenges in using titanium aluminides include low ductility and fracture toughness. This research will address this shortcoming by developing the concept of producing components with graded microstructures of titanium aluminides, which offer a unique opportunity to vary material properties within different sections of the component to satisfy specific functions.