| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
Identifying the Precursors of Ductile Failure via Void Nucleation and Coalescence |
| Author(s) |
Jose Javier Solano, Sven E. Gustafson, Philip J. Noell, Jun-Sang Park, Peter Kenesei, Kyle Johnson, Michael D. Sangid |
| On-Site Speaker (Planned) |
Jose Javier Solano |
| Abstract Scope |
Classical solid mechanics models have limited precision for predicting ductile failure because they are informed by continuum-scale failure metrics. Ductile failure in metals occurs via the nucleation, growth, and coalescence of voids within microstructures that exhibit anisotropy. This work employs multimodal characterization techniques (conducted at the Advanced Photon Source under DOE Contract DE-AC02-06CH11357) to determine the evolution of grain-scale failure metrics and ductile failure mechanisms in Al2219. In-situ near-field and far-field high-energy X-ray diffraction microscopy were employed to track the micromechanical state of the grain structure. Simultaneously, micro-computed tomography was employed to track the state of secondary particles and voids. These datasets were consolidated to investigate the evolution of stress created by microstructural anisotropy. In particular, sites of particle cracking and sites of void nucleation, growth, and coalescence were examined based on the micromechanical evolution of neighboring grains. SNL is managed and operated by NTESS under DOE NNSA contract DE-NA0003525. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Characterization, Aluminum |