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Coupling Effect of Unit Cell Topology and Forming Orientation on the Ti6Al4V Porous Structures Fabricated Using Selective Laser Melting
Author(s) -
Huang Xina,
Zhang Sheng,
Hu Quandong,
Lang Lihui,
Gong Shuili,
Nielsen Karl Brian
Publication year - 2019
Publication title -
advanced engineering materials
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.938
H-Index - 114
eISSN - 1527-2648
pISSN - 1438-1656
DOI - 10.1002/adem.201800737
Subject(s) - selective laser melting , topology (electrical circuits) , materials science , coupling (piping) , porosity , orientation (vector space) , yield (engineering) , composite material , geometry , microstructure , mathematics , combinatorics
Selective laser melting (SLM) opens the possibility to produce porous structures with designed mechanical characteristics. This study focuses on the coupling effect between unit cell topology (Dode and body‐centered cubic (BCC)) and forming orientation (horizontal and vertical) with regard to the actual geometric characterization and mechanical properties of SLM produced Ti6Al4V porous structures. The results show that for the mechanical response, there is a coupling effect between forming orientation and unit cell topology. This is most pronounced for the Dode topology, where the compressive and yield strength for specimens produced in vertical orientation are increased with 14.6% and 7.5% compared with those build horizontally. However, for the BCC topology, this effect cannot be seen. The fatigue properties for specimens processed vertically are better compared with those processed horizontally, especially for the BCC topology, it shows an increase of 51.6%. This study presents initial findings on how to handle the selection of unit cell topology and forming orientation for porous structures prepared using SLM, which may be beneficial for different applications.