Design of metal structures of custom composition using additive manufacturing

使用增材制造设计定制成分的金属结构

• 批准号: 2593424
• 金额: --
• 依托单位: University of Nottingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2025
• 资助国家: 英国
• 起止时间: 2025 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2593424
• 关键词: Design; metal; structures; custom; composition

Additive Manufacturing (AM) offers a new fabrication paradigm that allows almost total control over how materials are processed and connected. This versatility has led to the development of promising metal structures of customisable (graded) chemical composition which, if correctly designed, could be used to replace components now formed by joining modular elements made of different alloys. Structures of customised composition could find applications in a variety of industries especially energy, automotive and aerospace where it is oftenrequired management of extreme thermal and mechanical conditions. Using AM to control the composition within a structure would allow designers to tunemechanical and physical properties in specific locations (e.g. density, coefficients of thermal expansion, ferromagnetism, strength, etc.) and therefore enhance partperformance.Although grading chemical composition offers unique opportunities to create newoutstanding materials, there is a requirement to understand how different metalscan be intimately combined during AM to systematically achieve desired properties.This PhD aims to fill this knowledge gap by establishing guidelines for the identification of suitable material combinations for use in laser-based AM whilst fabricating reliable parts with no structural defects (e.g. cracks and voids). This will be accomplished by determining the structural and thermal behaviour of theinterface regions of the printed component (locations where dissimilar materials are in contact) as a function of the printing laser parameters. The project builds on the expertise developed at the Centre for Additive Manufacturing (CfAM) on the application of computational materials science techniques to laser AM to identify and select suitable material combinations. State-of-the-art AM software will be used to design parts with the identified materials in such a way as to satisfy the desired properties of the final part. Instrumental to the correct design of these complex parts will be the characterisation and testing of the interfaces formed in the printed structures. The PhD student will develop these structures with a combination of AM and metrology techniques, advanced materials testing, microscopy and numerical modelling, thereby gaining a broad set of skills and knowledge relevant to advanced manufacturing and materials research. The student appointed will work as part of a dynamic interdisciplinary team at CfAM, one of the largest research centres for additive manufacturing and 3D printing worldwide.

添加剂制造（AM）提供了一种新的制造范式，几乎可以完全控制材料的处理和连接方式。这种多功能性导致了可定制（分级）化学成分的有前途的金属结构的发展，如果设计正确，可以用来替换现在通过连接由不同合金制成的模块化元素而形成的组件。定制构图的结构可以在各种行业中找到应用，尤其是能源，汽车和航空航天，在这些行业中，通常会经常管理极端的热和机械条件。使用AM来控制结构内的组成将使设计人员能够在特定位置进行调节力学和物理特性（例如密度，热膨胀系数，铁磁性，力量，强度等），从而增强部分的性能。尽管将化学成分分级为构成提供了独特的属性，以使其在建立新的材料方面具有不同的属性。通过建立指南来识别合适的材料组合，以在基于激光器的AM中使用，而在没有结构缺陷的情况下（例如裂纹和空隙）来填补了这一知识差距。这将通过确定印刷组件（接触不同材料的位置）的界面区域的结构和热行为来实现，这是打印激光参数的函数。该项目建立在添加剂制造中心（CFAM）上开发的有关计算材料科学技术在激光AM上的应用，以识别和选择合适的材料组合。最先进的AM软件将用于使用已确定的材料设计零件，以满足最终部分的所需属性。这些复杂部分的正确设计将是对印刷结构中形成的接口的表征和测试。博士生将通过AM和计量技术，高级材料测试，显微镜和数值建模的结合来开发这些结构，从而获得与高级制造和材料研究相关的广泛技能和知识。被任命的学生将成为CFAM动态跨学科团队的一部分，CFAM是全球添加剂制造和3D印刷中心的最大研究中心之一。