| About this Abstract |
| Meeting |
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Symposium
|
13th International Conference on the Technology of Plasticity (ICTP 2021)
|
| Presentation Title |
Exploring the Fragmentation of Surface Films during Solid State Welding |
| Author(s) |
Daniel Ross Cooper, Gregory Oberhausen |
| On-Site Speaker (Planned) |
Daniel Ross Cooper |
| Abstract Scope |
Aluminum solid state welding occurs when intimate contact is achieved between substrates on the two sides of the interface. This contact requires the fragmentation of any intervening surface films. The fragmentation determines the threshold deformation needed to initiate welding and the final exposed area of the substrate, which determines the strength of the weld. Previous work has tended to focus on plane strain conditions but solid state welds may form under more complex stress conditions as found between billets in extrusion. In this talk, we explore the fragmentation and subsequent weld strength of aluminum bonded samples under varying surface conditions (e.g., roughness and lubricity) and deformation conditions. Experiments are conducted using accumulative asymmetric rolling of novel plate geometries to induce combinations of shear and in-plane compressive stress at the interface. Shear tests then determine the weld strengths and identical experiments on anodized samples are used to explore the oxide fragmentation. |
| Proceedings Inclusion? |
Definite: At-meeting proceedings |