About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Mechanical Response of Materials Investigated through Novel In-situ Experiments and Modeling
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Presentation Title |
Damage Evolution in Al Alloys Assessed via X-ray Computed Tomography and Crystallographic Orientation Data |
Author(s) |
Philip Noell, Raiyan Seede, Kyle Johnson |
On-Site Speaker (Planned) |
Philip Noell |
Abstract Scope |
Damage evolution in Al alloys were evaluated using in-situ X-ray computed tomography and a neural network segmentation strategy. Void nucleation was observed to occur throughout the deformation process, whereas void volume did not grow significantly until later stages of deformation. Void nucleation began prior to necking but was primarily concentrated in the rgion where the neck eventually formed - limited damage nucleation was observed outside of the neck until late stages of deformation. Inhomogeneities in void and particle spacing in the initial undeformed state of the material are observed to correlate well with the location of strain and damage localization during deformation. In-situ data were supplemented with post-mortem electron backscatter diffraction data to assess the effects of crystallographic orientation on void nucleation. These results provide new insights into ductile failure and how pre-existing defects influence rupture. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, Modeling and Simulation |