About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Theory and Design of Metallic Glasses
|
| Presentation Title |
Improvement of Ductility by Designing a Local Stress/Strain State in a Monolithic Metallic Glass |
| Author(s) |
Rui Yamada, Keisuke Tabaru, Ryota Maeda, Wookha Ryu, Junji Saida |
| On-Site Speaker (Planned) |
Rui Yamada |
| Abstract Scope |
Metallic glasses show brittle fracture manner at room temperature, which has been one of the biggest issues to be solved. Previous reports revealed that plasticity newly appeared not only through changing a metallic glass property itself (e.g. changing a relaxation state, composite with crystalline phase etc., i.e. intrinsic way) but also through several extrinsic factors (e.g. sample shape, friction condition etc.) during compression test. In a present study, we firstly focused on elucidation of the mechanism of appearance of plasticity when a friction condition between a loading platen and sample was changed. By using digital image correlation (DIC) and finite element method (FEM) analysis, the effect of evolution of local stress/strain state during compression on the improvement of ductility were investigated. Then, strategically designing those states by creating an elastic modulus gradient within Zr50Cu40Al10 metallic glass sample (i.e. intrinsic way), we finally achieved the improvement of brittleness of metallic glasses. |
| Proceedings Inclusion? |
Planned: |