On the influence of build orientation on properties of friction stir welded AleSi10Mg parts produced by selective laser melting

  • Welding and joining of components processed by additive manufacturing (AM) to other AMas well as conventionally produced components is of high importance for industry as thisallows to combine advantages of either technique and to produce large-scale structures,respectively. One of the key influencing factors with respect to weldability and mechanicalproperties of AM components was found to be the inherent microstructural anisotropy ofthese components. In present work, the precipitation-hardenable AleSi10Mg was fabri-cated in different build orientations using selective laser melting (SLM) and subsequentlyjoined by friction stir welding (FSW) in different combinations. Microstructural analysisshowed considerable grain refinement in the friction stir zone, however, pronouncedsoftening occurred in this area. The latter can be mainly attributed to changes in themorphology and size of Si particles. Upon combination of different build orientations aremarkable influence on the tensile strength of FSW joints was seen. Cyclic deformationresponses of SLM and FSW samples were examined in depth. Fatigue properties of thisalloy in the low-cycle fatigue (LCF) regime imply that SLM samples with the building di-rection parallel to the loading direction show superior performance under cyclic loading ascompared to the other conditions and the FSW joints. From results presented solid process-microstructure-property relationships are drawn.

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Metadaten
Author:Ghazal Moeini, Seyedvahid Sajadifar, Thomas Wegener, Christiane Rößler, A. Gerber, Stefan Böhm, Thomas Niendorf
DOI:https://doi.org/10.1016/j.jmrt.2021.03.101
ISSN:2238-7854
Parent Title (English):Journal of Materials Research and Technology
Document Type:Article
Language:English
Date of Publication (online):2022/01/07
Year of first Publication:2021
Publishing Institution:Westfälische Hochschule Gelsenkirchen Bocholt Recklinghausen
Release Date:2022/01/07
Volume:12
Issue:May-June
First Page:1446
Last Page:1460
Departments / faculties:Fachbereiche / Maschinenbau und Facilities Management
Licence (German):License LogoEs gilt das Urheberrechtsgesetz

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