| About this Abstract |
| Meeting |
Materials Science & Technology 2020
|
| Symposium
|
Additive Manufacturing: Mechanical Behavior of Lattice Structures Produced via AM
|
| Presentation Title |
Direct Metal Laser Sintering Strategies for Fabrication of Finer Resolution Cellular Structures |
| Author(s) |
Ebrahim Asadi, Fatemeh Hejripour, Muhammad Abdus Salam |
| On-Site Speaker (Planned) |
Ebrahim Asadi |
| Abstract Scope |
Direct Metal Laser Sintering (DMLS) is an additive manufacturing technology that is capable of fabricating net-shape intricate metallic designs such as cellular structures with tailored mechanical properties. In this talk, we present novel laser scanning strategies and their associated DMLS processing parameters to fabricate finer resolution Ti-6Al-4V cellular structures toward mimicking human cancellous bone resolution and mechanical performance. To this end, three DMLS scanning strategies with various laser power and scanning speed were defined to fabricate diamond and dodecahedron unit cells with four different cell sizes. With the constant laser spot size of 80μm, average powder size of 34μm, and layer thickness of 30μm for all the DMLS processes, the finest achieved resolution for the struts of the cellular structures are reported as 120μm in this study. Furthermore, correlations between DMLS processing parameters/scanning strategies with geometry, porosity, density, and mechanical performance of the cellular structures were comprehensively investigated and discussed. |