About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
|
Symposium
|
Deformation Mechanisms, Microstructure Evolution, and Mechanical Properties of Nanoscale Materials
|
Presentation Title |
G-21: The Impact of Interface Orientation on the Vibration Behavior of Joined Aluminum Substrates |
Author(s) |
Milad Khajehvand, Henri Seppänen, Panthea Sepehrband |
On-Site Speaker (Planned) |
Milad Khajehvand |
Abstract Scope |
In various joining techniques, including ultrasonic bonding and friction stir welding, the contact area is under vibration. Challenges in detailed analysis of the interface during bonding have limited our understanding about the underlying mechanisms of bond formation in such processes. In this work, Molecular Dynamics simulations are utilized to study the interface by forming a contact between two misoriented aluminum substrates and applying subsequent vibration parallel to their interface. The evolution of the network of interfacial dislocations and atomic movements as a function of the interface orientations are analyzed. It is found that the (111)-interface planes present low-resistance sliding, while the (001)- and (110)-oriented systems exhibit multiplication of interfacial dislocations during vibration, leading to a substantial amount of atomic displacements not only parallel to the interface, but also perpendicular to it. This perpendicular atomic movement across the interface can explain development of strong bond in joining processes that employ vibration. |
Proceedings Inclusion? |
Planned: |
Keywords |
Aluminum, Joining, Computational Materials Science & Engineering |