A numerical approach to assess the impact of the SLM laser parameters on thermal variables

Majeed, Mobin, Khan, HM, Wheatley, Greg, and Situ, Rong (2021) A numerical approach to assess the impact of the SLM laser parameters on thermal variables. Journal of Additive Manufacturing Technologies, 1 (3).

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Abstract

Due to extraordinarily high heating and cooling rates, understanding the selective laser melting (SLM) process remains a challenge. To evaluate the impact of processing parameters on distinct underlying surfaces, a three-dimensional finite element model is presented. To forecast the temperature distribution inside a finite solid model, a moving Gaussian heat source was created to scan the model with temperature-dependent material properties. In the finite model, the impact of processing factors such as laser power, scan rate, and scan spacing were investigated to measure thermal variables such as cooling rate, thermal gradient, and solidification rate in a layer with solid and powder bases. The maximum track temperature was observed to be increasing over the whole track length, which had a substantial influence on the thermal gradient, cooling rate, and solidification rate. The maximum track temperature, melt pool form, and thermal variables were shown to be strongly influenced by laser power and scan speed when compared to scan spacing. Furthermore, the underlying base had a substantial influence on the observed temperature values and melt pool shape

Item ID: 73462
Item Type: Article (Scholarly Work)
ISSN: 2749-3229
Copyright Information: © 2021M. Majeed; licensee Infinite Science Publishing. This is an Open Access article distributed under the terms of the Creative Commons Attribution License (http://creativecommons.org/licenses/by/4.0), which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cite.
Date Deposited: 12 Apr 2022 01:35
FoR Codes: 40 ENGINEERING > 4001 Aerospace engineering > 400101 Aerospace materials @ 100%
SEO Codes: 24 MANUFACTURING > 2415 Transport equipment > 241501 Aerospace equipment @ 100%
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