University of Oulu

Markus Köhler, Li Sun, Jonas Hensel, Sakari Pallaspuro, Jukka Kömi, Klaus Dilger, Zhiliang Zhang, Comparative study of deposition patterns for DED-Arc additive manufacturing of Al-4046, Materials & Design, Volume 210, 2021, 110122, ISSN 0264-1275, https://doi.org/10.1016/j.matdes.2021.110122

Comparative study of deposition patterns for DED-Arc additive manufacturing of Al-4046

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Author: Köhler, Markus1; Sun, Li2; Hensel, Jonas1;
Organizations: 1Institute of Joining and Welding, Technische Universität Braunschweig, Langer Kamp 8, 38106 Braunschweig, Germany
2Department of Structural Engineering, Norwegian University of Science and Technology, Trondheim 7491, Norway
3Materials and Mechanical Engineering, University of Oulu Centre for Advanced Steels Research, P.O. Box 4200, FI-90014 University of Oulu, Finland
Format: article
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 7.5 MB)
Persistent link: http://urn.fi/urn:nbn:fi-fe2021111755764
Language: English
Published: Elsevier, 2021
Publish Date: 2021-11-17
Description:

Abstract

Quality assurance is one of the largest challenges to the widespread adoption of metal additive manufacturing technology. Deposition pattern can significantly impact the temperature distribution during manufacturing process and thus the overall quality and residual stress formation of the manufactured components. In order to explore the intricate relationship, three different deposition patterns in DED-Arc additive manufacturing, the meander pattern, the spiral pattern and the newly developed S pattern, were experimentally and numerically scrutinized in terms of the resulting temperature distribution, grain size, porosity as well as residual stress formation. The study reveals that the variation of the deposition paths results in characteristic temperature fields and gradients with distinct local peak temperatures that determine the deposition quality, and simultaneously offers great degrees of freedom for optimal pattern design. Comparing the results with different deposition patterns, the S pattern leads to a more homogeneous temperature distribution, showing beneficial effects on the microstructure, porosity and residual stress formation in the deposited Al-4046 material, and is thus regarded as a promising alternative for improving additively manufactured parts quality.

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Series: Materials & design
ISSN: 0264-1275
ISSN-E: 1873-4197
ISSN-L: 0264-1275
Volume: 210
Article number: 110122
DOI: 10.1016/j.matdes.2021.110122
OADOI: https://oadoi.org/10.1016/j.matdes.2021.110122
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Subjects:
Funding: Dr. Li Sun would like to thank the founding from the China Scholarship Council and the Research Council of Norway through the Petromaks2 program (Project No. 281927) and the BIA Program (Project No. 269558)). Dr. Sakari Pallaspuro would like to thank Academy of Finland (#311934) for funding.
Copyright information: © 2021 The Authors. Published by Elsevier Ltd.This is an open access article under the CC BY license (http://creativecommons.org/licenses/by/4.0/).
  https://creativecommons.org/licenses/by/4.0/