Abstract
Process parameters in Direct Energy Deposition (DED) Additive Manufacturing are playing an important role in order to fabricate desired parts. In this research, we studied the effect of 3 process parameters, namely laser power, scan speed and powder feed rate. Based on variation of these parameters, we examined macrostructure and mechanical properties of stainless steel 316 fabricated parts, employing an orthogonal L9 array using the Taguchi technique. The results showed laser power to be the most effective factor whereas scan speed and powder feed rate were respectively less effective. In addition, effect of height of deposition was also considered. The results indicated change in macrostructure with increasing height. Finally, validation of a previously defined energy density equation for the DED process was studied. The results clearly showed the current energy density equation cannot fully represent a relation between input energy and output geometry, macrostructure, and mechanical properties.
| Original language | English |
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| Pages | 1058-1067 |
| Number of pages | 10 |
| Publication status | Published - 2020 |
| Externally published | Yes |
| Event | 28th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2017 - Austin, United States Duration: 7 Aug 2017 → 9 Aug 2017 Conference number: 28 |
Conference
| Conference | 28th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing Conference, SFF 2017 |
|---|---|
| Abbreviated title | SFF 2017 |
| Country/Territory | United States |
| City | Austin |
| Period | 7/08/17 → 9/08/17 |
