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Transition from high-entropy to conventional $(TiZrNbCu)_{1-x}Co_x$ metallic glasses
- Source :
- J. Appl. Phys. 2021 130 195102
- Publication Year :
- 2021
-
Abstract
- A new amorphous alloy system $(TiZrNbCu)_{1-x}Co_x$ covering a broad composition range from the high-entropy (HEA) to Co rich alloys (x$\leqslant$ 0.43) has been fabricated, characterized and investigated. A comprehensive study of the chemical compositions, homogeneity, thermal stability, electronic structure and magnetic and mechanical properties has been performed. All properties change their variations with x within the HEA range. In particular, the average atomic volume deviates from the Vegard's law for x$\ge 0.2$, where also the average atomic packing fraction suddenly changes. The valence band structure, studied with ultraviolet photoemission spectroscopy, shows a split-band shape with 3d-states of Co approaching the Fermi level on increasing x. Due to onset of magnetic correlations magnetic susceptibility rapidly increases for x$\ge 0.25$. Very high microhardness increases rapidly with x. The results are compared with those for similar binary and quinary metallic glasses and with those for Cantor type of crystalline alloys.<br />Comment: 29 pages, 10 figures
- Subjects :
- Condensed Matter - Materials Science
Subjects
Details
- Database :
- arXiv
- Journal :
- J. Appl. Phys. 2021 130 195102
- Publication Type :
- Report
- Accession number :
- edsarx.2107.08239
- Document Type :
- Working Paper
- Full Text :
- https://doi.org/10.1063/5.0064617