About this Abstract |
Meeting |
2020 TMS Annual Meeting & Exhibition
|
Symposium
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2020 Technical Division Student Poster Contest
|
Presentation Title |
SPG-17: Imprinting of Ti35Zr15Ni35Cu15 Metallic Glass with Superelasticity by Changing the Thermoplastic Forming Process |
Author(s) |
Yongjoo Kim, Yoonjae Choi, Woochul Kim, Wontae Kim, Dohyang Kim |
On-Site Speaker (Planned) |
Yongjoo Kim |
Abstract Scope |
In general, ㎛ scale surface patterning can be performed by lithography and chemical or ion etching. But this process is complicated, and metallic materials cannot be applied to these processes. However bulk metallic glasses (BMGs) can be easily adopted for ㎛ scale patterning by thermo-plastic forming in the super-cooled liquid (SCL) region since the viscosity becomes remarkably lower in the SCL region. Therefore, metallic glasses can be thermo-plastically formed into ㎛ scale products or complex geometries.
Up to now, most studies have been focused on compositions with a wide SCL region (ΔT>50) and high glass forming ability (e.g., Zr-, Pd-, Pt-, Au- BMGs). In this study, we selected Ti-Ni-based metallic glasses (TiNiZrCu), which are considered as a precursor for superelastic alloy after crystallization to compared surface micropatterning according to the processing method. The microstructural changes, and the crystallization behaviors after surface micropatterning under various pressure/temperature conditions were investigated. |
Proceedings Inclusion? |
Undecided |