About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Advanced Characterization Techniques for Quantifying and Modeling Deformation
|
Presentation Title |
The Role of Intermetallic Particles in the Fracture of Al2024-T351 |
Author(s) |
Sara Ricci, Nicola Bonora, Gabriel Testa, Gianluca Iannitti, Andrew Ruggiero, Di Wan, Zhuo Xu, Filippo Berto |
On-Site Speaker (Planned) |
Sara Ricci |
Abstract Scope |
The mechanisms of ductile fracture of the aluminum alloy Al2024-T351 have been investigated by means of SEM in situ investigation. Tests were performed on four sample geometries, carefully designed to achieve different combinations of stress triaxiality and Lode’s angle, ranging from tension dominant to shear dominant conditions. The steps of damage evolution have been monitored throughout the tests and were related to the evolution of local deformation assessed with DIC techniques. In particular, damage starts with the failure of large and brittle intermetallic particles, whose fracture behavior is governed by the maximum principal stress. Once they fail, the localization of plastic deformation and stress around the particle leads to the subsequent void formation in the matrix which coalesce together resulting in the failure of the material during the last steps of deformation. These results were used to calibrate a damage model to represent the material response under different stress conditions. |
Proceedings Inclusion? |
Planned: |
Keywords |
Aluminum, Characterization, Modeling and Simulation |