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Study and modeling of melt pool evolution in selective laser melting process of SS316L

Published online by Cambridge University Press:  06 September 2018

J. L. Tan ,
C. Tang  and
C. H. Wong Open the ORCID record for C. H. Wong [Opens in a new window]
J. L. Tan
Affiliation:
Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore SLM Solutions Singapore Pte. Ltd., 25 International Business Park, #02-15/17 German Centre, Singapore 609916, Singapore
C. Tang
Affiliation:
Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
C. H. Wong*
Affiliation:
Singapore Centre for 3D Printing, School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore 639798, Singapore
*
Address all correspondence to C. H. Wong at CHWong@ntu.edu.sg
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Abstract

In this paper, the melting of stainless steel 316L using Computational Fluid Dynamics to observe the melt pool characteristics is studied. The simulation model allows the observation of the molten pool flow during the selective laser melting process due to Marangoni's effect and recoil pressure. Furthermore, different parameters are tested to show their effects on the melt pool and track formation. Different laser powers, as well as scanning speeds, were used to study the effects they have on the melt pool characteristics. The results were used to determine the relationships between these factors and the melt pool characteristics.

Type
Research Letters
Information
MRS Communications , Volume 8 , Issue 3 , September 2018 , pp. 1178 - 1183
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Copyright
Copyright © Materials Research Society 2018 

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