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.

由于工艺的分层性质，增材制造的结构本质上是各向异性的，导致层间缺陷的形成，并且由于沿构建方向的外延生长而导致优选的晶体取向。晶格结构还遭受与 3D 中支柱或特征的排列相关的进一步的各向异性。在这项工作中，评估了 Ti-6Al-4V 三周期极小表面 (TPMS) 晶格结构的激光粉末床熔合 (L-PBF) 中的拓扑设计和微观结构控制的效用，以控制各向异性水平。该研究将强调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。