Please use this identifier to cite or link to this item: https://hdl.handle.net/10356/138417
Title: A study on the influence of scanning strategies on the levelness of the melt track in selective laser melting process of stainless steel powder
Authors: Le, Kim Quy
Tang, Chao
Wong, Chee How
Keywords: Engineering::Mechanical engineering
Issue Date: 2018
Source: Le, K.Q., Tang, C. & Wong, C.H. (2018). A study on the influence of scanning strategies on the levelness of the melt track in selective laser melting process of stainless steel powder. JOM Journal of the Minerals, Metals and Materials Society, 70(10), 2082–2087. doi:10.1007/s11837-018-2998-6
Journal: JOM Journal of the Minerals, Metals and Materials Society 
Abstract: By using a numerical model for a selective laser melting process, this study investigates the melt pool behaviours and the resulting defects due to different scanning strategies. Two common scanning patterns were tested: sequential and boustrophedon. The study found that sequential scanning strategy leads to a non-flat printed surface, while the boustrophedon strategy produces a flat printed surface. At the beginning of the track, the molten material is pulled from the hot laser spot to the cold tail by the Marangoni force leading to an increase in the melt pool height of the sequential and alternated strategies. On the other hand, due to the deep keyhole and the high cooling rate when the laser is switched off, a recess is formed at the end of the tracks. Similar phenomena can be observed in the boustrophedon scanning strategy at the start and ending of the track.
URI: https://hdl.handle.net/10356/138417
ISSN: 1047-4838
DOI: 10.1007/s11837-018-2998-6
Rights: © 2018 The Minerals, Metals and Materials Society. All rights reserved. This paper was published by Springer in JOM Journal of the Minerals, Metals and Materials Society and is made available with permission of The Minerals, Metals and Materials Society. The final publication is available at link.springer.com via https://doi.org/10.1007/s11837-018-2998-6
Fulltext Permission: open
Fulltext Availability: With Fulltext
Appears in Collections:MAE Journal Articles
SC3DP Journal Articles

SCOPUSTM   
Citations 20

8
Updated on Apr 27, 2021

PublonsTM
Citations 20

6
Updated on Apr 25, 2021

Page view(s)

153
Updated on Jul 3, 2022

Download(s) 50

46
Updated on Jul 3, 2022

Google ScholarTM

Check

Altmetric


Plumx

Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.