About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-67: In-situ Mechanical Characterization of Micro-scale NiTi Shape Memory Alloy Tensile Bars |
Author(s) |
Injong Oh, Ho Jang Kim, Won Seok Choi, Hosun Jun, Pyuck-Pa Choi, Wael Zaki, Gi-Dong Sim |
On-Site Speaker (Planned) |
Injong Oh |
Abstract Scope |
Shape memory alloy (SMA) thin films have capacity of recovering initial shape after heating, following the deformation. Furthermore, SMAs reveal another ability, called superelasticity, which bounces back deformation upon unloading. In behalf of these capacities, SMA have been expected to achieve high performances when applied for microactuators. However, mechanical behavior of micro-scale SMAs thin films are not deeply understood yet.
In this poster, we present our recent study on in-situ mechanical characterization of micro-scale Nickel Titanium (NiTi) tensile bars. With the help of MEMS (Micro-Electro-Mechanical Systems) fabrication techniques, hundreds of specimens with various design were fabricated in a single fabrication process. The mechanical properties of NiTi tensile bars are quantified by utilizing an in-situ SEM nanoindentation system equipped with focused ion beam (FIB) milled diamond micro gripper. Micro-scale tensile bars are proved to be an effective way to fabricate samples in a high-throughput manner and scrutinize the mechanical properties. |
Proceedings Inclusion? |
Undecided |