Local atomic structure in al-re marginal metallic glasses

Date

2016

Author

Övün, Mert

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Partial devitrification of the Al-RE marginal metallic glasses results in anomalous nucleation rate of nanocrystals conflicting with the classical nucleation theory by several orders of magnitude. One of the theoretical approaches explaining this phenomenon is the medium-range order (MRO) structures within the range of 1-2 nm that may be present both in the quenched amorphous state and its liquid precursor. In this work, these structures have been investigated conducting both experimental methods such as high energy X-ray diffraction (HEXRD) using synchrotron radiation, and computational methods as molecular dynamics (MD) , Monte Carlo (MC) and reverse Monte Carlo (RMC) simulation techniques. In order to make molecular simulations, interatomic potentials based on diffraction experiments have been developed. This work was partially supported by the Scientific and Technological Research council of Turkey (TÜBİTAK) under Grant No. 113M346.

Subject Keywords

Alloys., Rhenium., Metallic glasses., Metallic composites., Amorphous substances.

URI

http://etd.lib.metu.edu.tr/upload/12620103/index.pdf
https://hdl.handle.net/11511/25746

Collections

Graduate School of Natural and Applied Sciences, Thesis