About this Abstract |
Meeting |
2023 TMS Annual Meeting & Exhibition
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Symposium
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Bulk Metallic Glasses XX
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Presentation Title |
Property Studies on Atomically Smooth Metallic Glasses |
Author(s) |
Amit Datye, Zheng Chen, Chao Zhou, Xinzhe Wang, Shuhan Zhang, Jittisa Ketkaew, Sungwoo Sohn, Omur E. Dagdeviren, Jan Schroers, Udo D. Schwarz |
On-Site Speaker (Planned) |
Udo D. Schwarz |
Abstract Scope |
In recent years, nanoimprinting of bulk metallic glasses (BMGs) by thermoplastic forming has enabled the manufacturing of samples made from Pt57.5Cu14.7Ni5.3P22.5 BMG featuring atomically smooth terraces using SrTiO3 single crystals as molds. Due to their sub-angstrom RMS surface roughness, these atomically smooth samples are ideally suited to be used in high-resolution investigations of BMG properties by surface-sensitive methods such as atomic force microscopy. Here, we present results from a variety of studies: (1) How BMGs can be used to replicate sub-angstrom features of any size; (2) how such structures can be accurately maintained despite almost complete crystallization; (3) how annealing-induced relaxation and crystallization affects surface morphology is studied, revealing that the surface rearranges and relaxes towards a more stable, denser packed glass; (4) how stiffness mapping can be used to study preparation-dependent inhomogeneities in the glass and (5) how preparation parameters affect atomic-scale plastic flow. |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Shaping and Forming, Characterization |