Build position-based dimensional deviations of laser powder-bed fusion of stainless steel 316L Veetil, JK, Khorasani, M, Ghasemi, AH, Rolfe, Bernard, Vrooijink, I, Van Beurden, K, Moes, S and Gibson, Ian 2021, Build position-based dimensional deviations of laser powder-bed fusion of stainless steel 316L, Precision Engineering, vol. 67, pp. 58-68, doi: 10.1016/j.precisioneng.2020.09.024. Attached Files Name Description MIMEType Size Downloads Title Build position-based dimensional deviations of laser powder-bed fusion of stainless steel 316L Author(s) Veetil, JK Khorasani, M Ghasemi, AH Rolfe, Bernard orcid.org/0000-0001-8516-6170 Vrooijink, I Van Beurden, K Moes, S Gibson, Ian orcid.org/0000-0002-4149-9122 Journal name Precision Engineering Volume number 67 Start page 58 End page 68 Total pages 11 Publisher Elsevier Place of publication Amsterdam, The Netherlands Publication date 2021-01 ISSN 0141-6359 Keyword(s) Additive manufacturing Assist gas pressure Dimensional deviations Powder bed fusion Grain size Summary © 2020 The Authors This study investigates the effect of position on build-plate on the dimensional deviations for stainless steel 316 L samples made by laser powder-bed fusion. To understand the effect of sample position on the build-plate (substrate) with respect to shrinkage and dimensional deviation, 36 samples in a 6 × 6 array were printed with three repetitions. The value of the diameter was measured at 10 points along the vertical axis in the perpendicular and parallel directions to the flow of the assisted gas. The results of the experiment show that there is shrinkage in both directions with respect to the gas flow. However, the extent of deviation in the perpendicular direction to the gas flow is greater compared to the parallel diameters for the samples. This can be related to the pressure of assisted gas and the difference in cooling rate corresponding to the position of the samples on the building substrate. The hypothesis is proved by conducting further experiments regulating the amount of gas flow by adjusting the individual nozzle for the gas flow to the build chamber. The reason for these deviations is speculated to be related to the rheology of the melt pool. This research could lay a solid foundation for the future development of a compensation strategy to nullify the effect of shrinkage and dimensional deviations on parts made using the laser powder-bed fusion technique. The results of shrinkage of the columns appear to suggest that there is an effect on the circularity from the assisting gas. Language eng DOI 10.1016/j.precisioneng.2020.09.024 Indigenous content off Field of Research 02 Physical Sciences 09 Engineering 10 Technology HERDC Research category C1 Refereed article in a scholarly journal Free to Read? Yes Persistent URL http://hdl.handle.net/10536/DRO/DU:30144080 Document type: Journal Article Collections: Faculty of Science, Engineering and Built Environment School of Engineering Open Access Collection Related Links Link Description Link to full-text (open access)   Connect to published version Go to link with your DU access privileges     Unless expressly stated otherwise, the copyright for items in DRO is owned by the author, with all rights reserved. Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au. Versions Version Filter Type Thu, 15 Oct 2020, 11:55:16 EST Thu, 15 Oct 2020, 11:56:16 EST Fri, 16 Oct 2020, 04:01:14 EST Fri, 16 Oct 2020, 05:04:32 EST Mon, 19 Oct 2020, 11:40:42 EST Mon, 19 Oct 2020, 11:41:19 EST Mon, 19 Oct 2020, 15:02:14 EST Sun, 25 Oct 2020, 10:35:06 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 11 Abstract Views, 1 File Downloads  -  Detailed Statistics Created: Thu, 15 Oct 2020, 11:56:16 EST

Every reasonable effort has been made to ensure that permission has been obtained for items included in DRO. If you believe that your rights have been infringed by this repository, please contact drosupport@deakin.edu.au.