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.

增材制造的结构由于工艺的分层性质而固有地是各向异性的，这导致层间缺陷的形成以及由于沿构建方向沿着外延生长而导致的优选晶体取向。晶格结构遭受与3D中的支柱或特征的布置相关联的进一步的各向异性。在这项工作中，拓扑设计和微观结构控制在激光粉末床熔合（L-PBF）的Ti-6Al-4V三周期最小表面（TPMS）晶格结构的效用进行评估，以控制各向异性的水平。该研究将突出通过定制的拓扑和微观结构控制在增材制造的晶格结构中实现近各向同性特性的潜力，作为改善生物医学骨科植入物的结构和功能要求的手段。