| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
100 Years and Still Cracking: A Griffith Fracture Symposium
|
| Presentation Title |
Reversing Griffith after 100 Years: Mechanics of the Solid-state Bonding |
| Author(s) |
Yanfei Gao, Zhili Feng |
| On-Site Speaker (Planned) |
Yanfei Gao |
| Abstract Scope |
Solid-sate-bonding techniques have been widely used and investigated in welding and joining community, and also recently in novel nanomanufacturing processes. Nevertheless, it is well known in the community of mechanics of materials that crack healing, an opposite process to Griffith fracture, does not usually take place at ambient conditions except for extremely flat surfaces. Traditionally, the solid-state-bonding mechanisms are believed to be dominated by atomic interdiffusion across the interface. In contrary, we propose that both lateral diffusion along the interface and creep deformation of surrounding materials dominate the gap closure and thus dictate the kinetics of bonding. Additionally, the competition between these two processes defines a length scale, on which various solid-state-bonding techniques find their characteristic parametric space. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Mechanical Properties, Modeling and Simulation, Computational Materials Science & Engineering |