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Meeting 2022 TMS Annual Meeting & Exhibition
Symposium Dynamic Behavior of Materials IX
Presentation Title G-7: Deformation Mechanism of Laser Direct Metal Deposited Cu-Fe Alloy under High Strain Rate Condition
Author(s) Arya Chatterjee, Wesley Higgins, Ethan Sprague, George M Pharr , Amit Misra
On-Site Speaker (Planned) Arya Chatterjee
Abstract Scope The present investigation aims to study the plastic deformation mechanism in an immiscible Cu-Fe alloy. The Cu-Fe alloy used in the current study showed the presence of two phases (i.e. Cu and Fe) in equal amounts in the microstructure. This Cu-Fe alloy is prepared using a laser direct metal deposition (DMD) based additive manufacturing (AM) technique and produces a hierarchical microstructure. The 50Cu-50Fe alloy is then subjected to plastic deformation at different strain rates. Nano-indentation technique is used to apply different constant strain rates (in the range of 10-3 /sec to 102 /sec) deformation and impact loading (with varying strain rates) to the Cu-Fe alloy. The post deformation damages specifically near the indented tip regions are studied with the help of scanning transmission electron microscopy (STEM-HAADF) to elucidate the underlying mechanism of deformation at different strain rates for hierarchical microstructure in a Cu-Fe alloy.
Proceedings Inclusion? Planned:
Keywords Additive Manufacturing, Characterization, Other

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