About this Abstract |
Meeting |
2021 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2021)
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Symposium
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Applications
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Presentation Title |
Comparison between Ti-6Al-4V and 316L Stainless Steel Micro Lattice Structures Produced by Additive Manufacturing |
Author(s) |
Mark Hartnett, Denis P. Dowling |
On-Site Speaker (Planned) |
Mark Hartnett |
Abstract Scope |
Lattice structures fabricated using the laser-based powder bed fusion technique, are of interest due to their high strength to weight ratios and energy absorption characteristics. This study compares the mechanical and material properties of micro lattice structures, formed from two alloys using the diamond base cell. The lattices were fabricated from Ti-6Al-4V, using a single point exposure method and from 316L stainless steel, using a conventional contour laser exposure method. Both lattice structures had a unit cell size 1.54 mm, with strut diameters in the range 200 to 400 μm. Compressive strength measurements of the printed structures demonstrated that both Ti-6Al-4V and 316L lattice’s exhibited similar relative strength and relative energy absorption, however the 316L samples showed a higher relative elastic modulus. Analysis of the compressive behaviour showed that the Ti-6Al-4V alloy exhibited a more brittle failure mechanism, in contrast with the ductile failure mode obtained with 316L. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |