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ISSN Online: 2379-1748

ISBN Flash Drive: 978-1-56700-483-0

ISBN Online: 978-1-56700-482-3

4th Thermal and Fluids Engineering Conference
April, 14–17, 2019 , Las Vegas, NV, USA

TRANSIENT FEM SIMULATION OF 316L STAINLESS STEEL FABRICATED BY SELECTIVE LASER MELTING WITH DIFFERENT PROCESSING PARAMETERS.

Get access (open in a dialog) pages 853-859
DOI: 10.1615/TFEC2019.fip.028486

要約

Additive Manufacturing (AM) particularly laser powder-bed fusion, is advancing rapidly in design and manufacturing industries. Selective laser melting (SLM) also known as 3D-printing has become an extensively used technique for several manufacturing processes. However, processing parameters of SLM influence the defect formation mechanisms such as porosities, holes, cracks, incomplete fusion and molten pool configuration during the SLM process of metallic powders. The right processing parameters therefore become a crucial role for minimizing the residual stress and strain as well as improving the quality of a manufactured product. It is therefore necessary to study the heat transfer mechanisms in laser heating methods and its impact on the quality of processed parts. In this study, the finite element method (FEM) software ANSYS® (Workbench version 19.0) with additive manufacturing extension was employed to predict the unsteady temperature distribution of temperature-dependent thermal properties, residual stress and strain as a result of the rapid melting and solidification of 316L Stainless Steel metallic powder with varying processing parameters. The simulated results clearly showed the significant effect of the processing parameters such as scanning speed, hatch distance and melting temperature on residual stress and strain of selective laser melting of 316L Stainless Steel. It can be deduced from the simulation results that, increasing the scanning speed and hatch distance induces less residual stress and strain in the finished 3D build part and also the location of the maximum residual stress and strain were identified.