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The effect of process parameters and mechanical properties of direct energy deposited stainless steel 316
conference contribution
posted on 2017-01-01, 00:00 authored by Mojtaba Izadi, A Farzaneh, Ian GibsonIan Gibson, Bernard RolfeBernard RolfeProcess 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.
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Event
Laboratory for Freeform Fabrication. Symposium (28th : 2017 : Austin, Texas)Series
Laboratory for Freeform Fabrication SymposiumPagination
1058 - 1067Publisher
[University of Texas]Location
Austin, TexasPlace of publication
[Austin, Tex.]Start date
2017-08-07End date
2017-08-09Language
engPublication classification
E1 Full written paper - refereedEditor/Contributor(s)
[Unknown]Title of proceedings
SFF 2017 : Proceedings of the 28th Annual International Solid Freeform Fabrication Symposium - An Additive Manufacturing ConferenceUsage metrics
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