| About this Abstract | 
   
    | Meeting | 2024 TMS Annual Meeting & Exhibition | 
   
    | Symposium | Additive Manufacturing: Process-induced Microstructures and Defects | 
   
    | Presentation Title | Understanding the Microstructure and Chemical Evolution of Al-Mg alloys Prepared by Hybrid Casting and Additive Manufacturing Processes | 
   
    | Author(s) | Tanvi  Ajantiwalay, Mayur  Pole, Gerald  Knapp, Thomas  Feldhausen, Mithulan  Paramanathan, Alex  Plotkowski, Arun  Devaraj | 
   
    | On-Site Speaker (Planned) | Tanvi  Ajantiwalay | 
   
    | Abstract Scope | The widespread adoption of additively manufactured (AM) aluminum in the automotive market faces significant barriers related to production rates and qualification of AM components. To overcome these challenges, a new hybrid manufacturing approach is currently explored that integrates casting and AM processes. By casting certain sub-sections of components and using AM for the remaining geometry, critical stress pathways can be certified while unnecessary weight is removed. However, the implementation of this hybrid approach necessitates a comprehensive understanding of the interface properties between the cast substrate and the AM material. In this work, we studied the microstructural and compositional changes near the interface of laser hot-wired AM 5356 Al-Mg and as-cast Al-Mg-Si alloy using Atom Probe Tomography (APT). Such a localized characterization at an atomic scale along the interface provides valuable insights about the materials microstructure which will then be useful to optimize the processing parameters. | 
   
    | Proceedings Inclusion? | Planned: | 
 
    | Keywords | Characterization, Aluminum, Additive Manufacturing |