About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing of Metals: Multiscale and Non-Equilibrium Solidification Fundamentals
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| Presentation Title |
Enabling Twin-Wire Arc Additive Manufacturing for High-Throughput Deposition and Dissimilar Metal Joining |
| Author(s) |
Aditya Pulipaka, Gianna Valentino |
| On-Site Speaker (Planned) |
Aditya Pulipaka |
| Abstract Scope |
Twin-wire arc additive manufacturing (TWAAM) is a promising method for increasing deposition rates and enabling in situ compositional control by feeding two independent wires into a shared arc. Although the technique has been demonstrated, its potential for structural fabrication and dissimilar metal joining remains largely unexplored. This study focuses on early-stage development and validation of a TWAAM platform through a staged approach. Initial efforts will establish process stability using identical wire feedstocks, followed by deposition of discrete bimetallic interfaces, and finally, compositionally graded transitions between dissimilar alloys. ER70S-6 and Inconel 625 are selected as a representative alloy pair. Interface morphology, dilution behavior, and local property variations will be evaluated through electron microscopy (e.g., EDS, EBSD) and hardness mapping. The resulting process-structure-property insights will inform the design of robust graded interfaces and support the use of TWAAM for scalable fabrication and joining of multi-material components in naval and industrial applications. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, |