About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
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Symposium
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Advanced Characterization Techniques for Quantifying and Modeling Deformation
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Presentation Title |
Time Resolved Evolution of the 3D Nanoporous Structure of Sintered Ag by X-ray Nanotomography: Role of the Interface with a Copper Substrate |
Author(s) |
Xavier Milhet, Kokouvi N'Tsouaglo, Jerome Colin, Loic Signor, Azdine Nait-Ali, Juan Creus, Mikael Gueguen, Marc Legros |
On-Site Speaker (Planned) |
Xavier Milhet |
Abstract Scope |
The evolution of the nanoporous structure of sintered silver during high temperature aging, ranging from 200°C to 350°C is investigated by in-situ Computed X-Ray Tomography. Investigations were performed on both pure sintered silver and specimens containing a silver/copper interface. It is shown that while pore evolution is driven by diffusion (Oswald ripening), the presence of an interface promotes faster growth kinetics until a deviation from Oswald ripening occurs. This evolution can be explained considering the conjugated effects of the thermal stresses and surface energy on the diffusion process. Preliminary finite elements modeling has been performed using the real microstructure in order to investigate on the relationship between mechanical loading and nanoporous structure evolution. |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Electronic Materials, Other |