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Semi-solid wire-feed additive manufacturing of AlSi7Mg by direct induction heating

Englert, Lukas ORCID iD icon 1; Klumpp, Alexander; Ausländer, Antonia; Schulze, Volker; Dietrich, Stefan ORCID iD icon 1
1 Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK), Karlsruher Institut für Technologie (KIT)

Abstract (englisch):

In this study, a novel process is presented in which direct induction heating with frequencies in the MHz range is used for the wire-feed additive manufacturing of the alloy AlSi7Mg. The high frequency of 1.5 MHz enables processing of 1.2 mm diameter wires without the need for indirect heating via a nozzle. The feasibility of the process is proven by the experimental identification of a proper process window regarding the influential parameters such as the distance between inductor and substrate, induction power and wire feed rate for the fabrication of single layers. Furthermore, a strategy for the successful fabrication of multi-layered cubes is developed. The microstructure of the cubes exhibits a characteristic variation along the build direction. Micro-computed tomography is used to reveal defects like lack of fusion and spherical pores in test cubes. The presented results are used to derive possible process improvements, which will allow the novel process to be used as a fast and powder-free alternative metal additive manufacturing route in future.


Verlagsausgabe §
DOI: 10.5445/IR/1000148175
Veröffentlicht am 01.07.2022
Originalveröffentlichung
DOI: 10.1016/j.addlet.2022.100067
Scopus
Zitationen: 10
Dimensions
Zitationen: 10
Cover der Publikation
Zugehörige Institution(en) am KIT Karlsruher Institut für Technologie (KIT)
Institut für Angewandte Materialien – Werkstoffkunde (IAM-WK)
Publikationstyp Zeitschriftenaufsatz
Publikationsmonat/-jahr 12.2022
Sprache Englisch
Identifikator ISSN: 2772-3690
KITopen-ID: 1000148175
Erschienen in Additive Manufacturing Letters
Verlag Elsevier
Band 3
Seiten Article no: 100067
Schlagwörter Wire-feed additive manufacturing; Induction heating; AlSi7Mg; Micro-computed tomography; Semi-solid processing
Nachgewiesen in Scopus
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