About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Mechanical Behavior at the Nanoscale VII
|
Presentation Title |
Influence of Ordering on the Mechanical Properties of CuAu Alloy Nanowires |
Author(s) |
Peter Schweizer, Lilian M Vogl, Johann Michler, Andrew M Minor |
On-Site Speaker (Planned) |
Peter Schweizer |
Abstract Scope |
With the advent of multiple principal component alloys, the effect of ordering phenomena on the mechanical properties of materials has taken the spotlight in recent years. While long range periodicity is well understood, the exact nature and occurrence of short-range ordering is still up for debate. Nevertheless, it is clear that ordering of any kind does substantially influence the mechanical properties of materials.
Here we use in situ TEM tensile tests on binary copper-gold nanowires as a model system to unravel the effect of ordering on the mechanical properties of alloys. We compare wires with different degrees of ordering which is determined locally using 4D-STEM. Increasing the order leads to a transition from a twin based to a slip based deformation mechanism under tension and an increase in yield strength. Finally, we see evidence of short-range ordering evolving in the wires in parallel to long range order. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Nanotechnology, Characterization |