Abstract
Metallic glasses, also known as glassy metals, exhibit unique mechanical properties in terms of their strength and ductility due to their noncrystalline microstructures. By performing molecular dynamics simulations, thin-film metallic glasses can be prepared by simulated sputter deposition processes. The deposition simulations were conducted with a tight-binding interatomic potential, and argon working gas was modeled by the pair-wise Moliere potential. The atomic structures of the glasses are verified by the radial distribution functions. After deposition simulation and suitable equilibration, the deposited amorphous films were simulated for their indentation properties by a right-angle conical indenter tip at selected temperatures. The hardness and Young’s modulus of the glasses show strong temperature dependence. The calculated pileup index of the films may be used to indicate the glass transition temperature.
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Acknowledgements
The authors are grateful for research grants from Taiwan Ministry of Science and Technology. This research received funding from the Headquarters of University Advancement at the National Cheng Kung University, which is sponsored by the Ministry of Education, Taiwan, ROC. We are also grateful to the National Center for High-Performance Computing for computer time and facilities.
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Wu, CY., Wang, YC. (2019). Indentation Behavior of Metallic Glass Via Molecular Dynamics Simulation. In: Schmauder, S., Chen, CS., Chawla, K., Chawla, N., Chen, W., Kagawa, Y. (eds) Handbook of Mechanics of Materials. Springer, Singapore. https://doi.org/10.1007/978-981-10-6884-3_2
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DOI: https://doi.org/10.1007/978-981-10-6884-3_2
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