About this Abstract |
Meeting |
2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
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Symposium
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2024 Annual International Solid Freeform Fabrication Symposium (SFF Symp 2024)
|
Presentation Title |
Probing the Effect of Dislocation Cell on the Plasticity and Anisotropy of Additively Manufactured Copper via Crystal Plasticity Finite Element Modeling |
Author(s) |
Md Mahabubur Rohoman, Caizhi Zhou |
On-Site Speaker (Planned) |
Md Mahabubur Rohoman |
Abstract Scope |
Due to the high cooling rate during additive manufacturing (AM) of metals, especially laser-powder bed fusion process, the microstructure within AM metals has unique features, such as interlayer interfaces, molten pool boundaries and dislocation cell structures. It is critical to understand the relationship between the spatial heterogeneity of the microstructure and the mechanical properties of AM metals. In this work, the crystal plasticity finite element (CPFE) model will be used to explore the effect of dislocation cells on the strength and anisotropy of AM copper for the first time. We will analyze how dislocation cell size and dislocation density affect the evolution of geometrically necessary dislocation density and statistically stored dislocation density during plastic deformation in AM copper. We will also explore the influence of the dislocation cell structure on the anisotropy of plasticity in AM copper. These results will deepen our understanding of the plastic deformation of AM metals. |
Proceedings Inclusion? |
Definite: Post-meeting proceedings |