Topological design and microstructural control of Additively manufactured Ti-6Al-4V Lattices for biomedical implants

用于生物医学植入物的增材制造 Ti-6Al-4V 晶格的拓扑设计和微观结构控制

• 批准号: 2910703
• 金额: --
• 依托单位: University of Birmingham
• 依托单位国家: 英国
• 项目类别: Studentship
• 财政年份: 2021
• 资助国家: 英国
• 起止时间: 2021 至 无数据
• 项目状态: 未结题
• 来源: https://gtr.ukri.org/projects?ref=studentship-2910703
• 关键词: Topological; design; microstructural; control; Additively

Additively manufactured structures are inherently anisotropic due to the layered nature of the process that result in the formation of inter-layer defects and a preferred crystallographic orientation due to the epitaxial growth along the build direction. Lattice structures suffer from a further anisotropy associated with the arrangement of the struts or features in 3D. In this work, the utility of topological design and microstructural control in Laser Powder Bed Fusion (L-PBF) of Ti-6Al-4V Triply Periodic Minimal Surface (TPMS) lattice structures is assessed to control the levels of anisotropy. The study will highlight the potential for achieving near isotropic properties in additively manufactured lattice structures through tailored topological and microstructural control as means of improving the structural and functional requirements of biomedical orthopaedic implants.

由于该过程的分层性质，由于层间缺陷的形成和首选的晶体学取向，因此，加上制造的结构本质上是各向异性的。晶格结构遭受与支撑杆或3D特征的排列相关的进一步各向异性。在这项工作中，评估了TI-6AL-4V Triply周期性最小表面（TPMS）的拓扑设计和微结构控制的实用性，以控制各向异性的水平。这项研究将突出通过定制的拓扑和微结构控制，以提高生物医学骨科植入物的结构和功能需求的手段，从而强调在添加性生产的晶格结构中实现近乎各向同性特性的潜力。