About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
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Symposium
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Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
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Presentation Title |
Uncovering Dislocation-precipitate Interactions during Tensile Loading of Wire Arc Additive Manufactured Nickel-aluminum-Bronze |
Author(s) |
Aeriel D. Murphy-Leonard, Veronika Mazanova |
On-Site Speaker (Planned) |
Aeriel D. Murphy-Leonard |
Abstract Scope |
Dislocation-precipitate interactions of a wire arc additive manufactured nickel-aluminum-bronze alloy subjected to uniaxial tensile loading were investigated in this study. A unique multi-scale methodology involving scanning transmission electron microscopy (S/TEM), electron back scatter diffraction (EBSD), and electron channeling contrast imaging (ECCI) was designed to uncover individual interactions with several κ-phase particles. A highly planar arrangement of dislocations was distributed within the α-Cu matrix. A strong accumulation of dislocations along globular κII and lamellar κIII particles were observed during loading. Shearing of small, coherent κIV particles by dislocations was also observed within the matrix. The presence of intrinsic and extrinsic stacking faults was found throughout the microstructure. These interactions provide insights into the processing parameters needed to enhance strength and the ductility of these complex microstructures. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, Copper / Nickel / Cobalt |