Openly accessible

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, BernardORCID iD for Rolfe, Bernard orcid.org/0000-0001-8516-6170
Vrooijink, I
Van Beurden, K
Moes, S
Gibson, IanORCID iD for 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

Connect to link resolver
 
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
Citation counts: TR Web of Science Citation Count  Cited 0 times in TR Web of Science
Scopus Citation Count Cited 0 times in Scopus
Google Scholar 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.