About this Abstract |
| Meeting |
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
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| Symposium
|
11th Conference on Trends in Welding Research + Additive Manufacturing (TWR+AM)
|
| Presentation Title |
Controlling Interfacial Resolidification in Impact-Based Additive Manufacturing for Defect-Free Joining of Dissimilar Alloys |
| Author(s) |
Muhammad Shehryar Khan |
| On-Site Speaker (Planned) |
Muhammad Shehryar Khan |
| Abstract Scope |
Achieving high-strength metallurgical bonding in dissimilar material systems is a primary challenge for both traditional welding and solid-state additive manufacturing. While interfacial melting in high-velocity impact processes like cold spray has been traditionally viewed as detrimental to bonding, this study proposes a new paradigm where precisely engineered nanoscale melting can serve as a tunable catalyst for adhesion. We present a detailed investigation into the transition from purely solid-state to liquid-assisted bonding using laser-induced single microparticle impact testing. We show that AA7075 microparticles generate eutectic melting during impacts, even at significantly lower velocities than previously predicted. We demonstrate that by restricting the volume of this liquid phase to the nanoscale, the resulting resolidification kinetics are sufficiently rapid to facilitate metallurgical bonding. Crucially, this mechanism enables joint formation without extensive plastic deformation which is typically required by traditional cold spray, offering a pathway to join dissimilar materials with drastically different mechanical properties. |
| Proceedings Inclusion? |
Undecided |