A study on surface morphology and tension in laser powder bed fusion of Ti-6Al-4V Khorasani, Mahyar, Ghasemi, AmirHossein, Awan, Umar Shafique, Hadavi, Elahe, Leary, Martin, Brandt, Milan, Littlefair, Guy, O’Neil, William and Gibson, Ian 2020, A study on surface morphology and tension in laser powder bed fusion of Ti-6Al-4V, International Journal of Advanced Manufacturing Technology, vol. 111, pp. 2891-2909, doi: 10.1007/s00170-020-06221-w. Attached Files Name Description MIMEType Size Downloads Title A study on surface morphology and tension in laser powder bed fusion of Ti-6Al-4V Author(s) Khorasani, Mahyar Ghasemi, AmirHossein Awan, Umar Shafique Hadavi, Elahe Leary, Martin Brandt, Milan Littlefair, Guy O’Neil, William Gibson, Ian orcid.org/0000-0002-4149-9122 Journal name International Journal of Advanced Manufacturing Technology Volume number 111 Start page 2891 End page 2909 Total pages 19 Publisher Springer Place of publication Berlin, Germany Publication date 2020 ISSN 0178-0026 1433-3015 Keyword(s) Additive manufacturing Selective laser melting Surfacemorphology Surface roughness Porosity Summary When reporting surface quality, the roughest surface is a reference for the measurements. In LPBF due to recoil pressure and scan movement, asymmetric surface is shaped, and surface roughness has different values in different measurement orientations. In this research, the influence of the laser powder bed fusion (LPBF) process parameters on surface tension and roughness of Ti-6AI-4 V parts in three orientations are investigated. To improve the mechanical properties, heat treatment was carried out and added to the designed matrix to generate a comprehensive data set. Taguchi design of experiment was employed to print 25 samples with five process parameters and post-processing. The effect and interaction of the parameters on the formation of surface profile comprising tension, morphology and roughness in various directions have been analysed. The main contribution of this paper is developing a model to approximate the melting pool temperature and surface tension based on the process parameters. Other contributions are an analysis of process parameters to determine the formation and variation of surface tension and roughness and explain the governing mechanisms through rheological phenomena. Results showed that the main driving factors in the variation of surface tension and formation of the surface profile are thermophysical properties of the feedstock, rheology and the temperature of the melting pool. Also, the results showed that while the value of surface tension is the same for each test case, morphology and the value of roughness are different when analysing the surface in perpendicular, parallel and angled directions to laser movement. Language eng DOI 10.1007/s00170-020-06221-w Indigenous content off Field of Research 01 Mathematical Sciences 08 Information and Computing Sciences 09 Engineering HERDC Research category C1 Refereed article in a scholarly journal Free to Read? Yes Persistent URL http://hdl.handle.net/10536/DRO/DU:30145281 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)     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, 12 Nov 2020, 13:06:39 EST Fri, 13 Nov 2020, 04:02:44 EST Fri, 13 Nov 2020, 05:05:04 EST Fri, 13 Nov 2020, 13:27:03 EST Fri, 13 Nov 2020, 13:29:04 EST Fri, 13 Nov 2020, 15:14:08 EST Filtered Full Citation counts:   Cited 0 times in TR Web of Science Cited 0 times in Scopus Search Google Scholar Access Statistics: 23 Abstract Views, 0 File Downloads  -  Detailed Statistics Created: Thu, 12 Nov 2020, 13:06:39 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.