| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Mechanical Behavior at the Nanoscale V
|
| Presentation Title |
Size Effect of NiTi-based Shape Memory Nanoparticles on Recoverable Strain |
| Author(s) |
Ji Young Kim, So Yeon Kim, Jin Woo Kim, Won Seok Ko, Eun Soo Park |
| On-Site Speaker (Planned) |
Ji Young Kim |
| Abstract Scope |
It is well known that martensitic phase transformation in shape memory alloys (SMAs) exhibit grain size and sample size dependence. In particular, studies on the size effect have attracted great attention because signal of shape memory behavior disappears below the critical size. However, previous studies have limited to the practical application such as composite materials since researchers used single crystals to study the sample size effect. In the present study, we suggested novel method to fabricate isotropic polycrystalline SMA nanoparticles and investigated size effect of these nanoparticles. We systematically performed thermal analysis and mechanical tests in scanning electron microscope to understand martensitic transformation behavior and carefully compared with the data of molecular dynamic simulation to analyze the mechanical behavior of the nanoparticles. This study provides theoretical basis to fabricate isotropic polycrystalline SMA nanoparticles and novel guideline for studying SMA size effect, which can accelerate the practical use of these materials. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |