UCL Discovery
UCL home » Library Services » Electronic resources » UCL Discovery

In situ X-ray quantification of melt pool behaviour during directed energy deposition additive manufacturing of stainless steel

Chen, Y; Clark, SJ; Huang, Y; Sinclair, L; Lun Alex Leung, C; Marussi, S; Connolley, T; ... Lee, PD; + view all (2021) In situ X-ray quantification of melt pool behaviour during directed energy deposition additive manufacturing of stainless steel. Materials Letters , 286 10.1016/j.matlet.2020.129205. (In press). Green open access

[img]
Preview
Text
1-s2.0-S0167577X20319121-main.pdf - Published version

Download (1MB) | Preview

Abstract

The Directed Energy Deposition Additive Manufacturing (DED-AM) of SS316L was studied using in situ and operando synchrotron X-ray imaging to quantitively understand the effect of processing parameters on the melt-pool morphology and surface quality. It was found that surface roughness of DED-AM builds can result from melt pool surface perturbations caused by changes in the melt flow and build stage motion perturbations. Process maps are developed that quantitatively correlate build quality to process parameters including powder feed rate, laser power and traverse speed. How the AM process parameters control build efficacy is clarified, and the processing conditions required to dampen surface perturbations leading to roughness were determined.

Type: Article
Title: In situ X-ray quantification of melt pool behaviour during directed energy deposition additive manufacturing of stainless steel
Open access status: An open access version is available from UCL Discovery
DOI: 10.1016/j.matlet.2020.129205
Publisher version: http://dx.doi.org/10.1016/j.matlet.2020.129205
Language: English
Additional information: © 2020 The Authors. Published by Elsevier B.V. This is an open access article under the CC BY license (http:// creativecommons.org/licenses/by/4.0/).
Keywords: Directed energy deposition, In situ synchrotron X-ray imaging, Laser additive manufacturing
UCL classification: UCL
UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10118511
Downloads since deposit
0Downloads
Download activity - last month
Download activity - last 12 months
Downloads by country - last 12 months

Archive Staff Only

View Item View Item