About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
|
2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-72: Mechanical Behavior of NiTi Shape Memory Alloy Thin Films |
Author(s) |
Ji-Young Kim, Injong Oh, Abdul Rehman, Yu Hyun Park, Wael Zaki, Gi-Dong Sim |
On-Site Speaker (Planned) |
Ji-Young Kim |
Abstract Scope |
Shape memory alloy(SMA) is a material which shows unusual deformation depending on temperature or loading condition. Although a lot of research have focused on the bulk-scale mechanical properties of these alloys, it is still hard to apply SMAs in micron-scale applications such as electric or biomedical sensor.
In this study, we conducted in-situ tensile test of NiTi, which is the one of the well-known SMAs, in order to investigate the small-scale mechanical behavior for small-scale applications. Here, we focused on the superelasticity effect at various loads. Tensile specimens are fabricated by sputter deposition and MEMS (Micro Electro Mechanical System) process. Tensile tests are conducted by using a customized in-situ SEM (Scanning Electron Microscope) tensile tester. For deeper understanding of the temperature-dependent superelasticity behavior of SMA thin films, we are currently working on high temperature mechanical testing, which is achieved by joule-heating of tungsten heaters co-fabricated with each specimen. |
Proceedings Inclusion? |
Undecided |