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  4. Compound Casting of Aluminum with Sheet Steel in 3D Sand Casting Using an Inductive Heating System
 
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2023
Journal Article
Title

Compound Casting of Aluminum with Sheet Steel in 3D Sand Casting Using an Inductive Heating System

Abstract
Compound casting is a process in which a single component is made from two metallic materials, such as aluminum and steel. Solid-liquid bimetallic compounds can be produced by suitable process control. This technology can reduce the number of joining processes, and the specific properties of the respective metal component can be used for specifically designed product properties, for example, where lightweight and high strength are needed. This paper presents an experimental methodology for producing a purely material-bonded bimetallic joint from cast aluminum and zinc-coated sheet steel in 3D sand casting using an inductive heating system. The process-related temperature characterisation in the compound zone is described using a heating test rig and temperature measurements. It shows that inductive preheating can only produce a material bond between the aluminum casting and the coated steel sheet. Shear tensile tests showed strengths between 15 MPa and 22 MPa. Laser surface pre-treatment using laser ablation cutting on the coated steel sheet was carried out to investigate the benefit of possible microform-locking. The results show a strength-reducing influence on the tensile shear tests. Micrographs showed the formation of Al4.5FeSi and Al7Fe2Si, as well as the formation of other undefined intermetallic phases. The thickness of the compound zone is 10 µm.
Author(s)
Locke, Christopher
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Guggemos, Martin
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Gruber, Maximilian
Maier, Lorenz
Mayr, Lukas
Weiß, Tony
Volk, Wolfram  
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Günther, Daniel  
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Journal
Metals  
Open Access
DOI
10.3390/met13020354
Language
English
Fraunhofer-Institut für Gießerei-, Composite- und Verarbeitungstechnik IGCV  
Keyword(s)
  • 3D sand casting

  • aluminum/steel

  • compound casting

  • induction

  • joining

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