Novel class of nanostructured metallic glass films with superior and tunable mechanical properties
(2021) Acta Materialia — Vol. 213, p. 116955 (2021)
Files
ActaMaterialia2132021116955.pdf
Open Access - Adobe PDF
- 2.39 MB
Details
- Authors
Ghidelli, Matteo 
Bassi, A. Li
- Abstract
- A novel class of nanostructured Zr50 Cu50 (%at.) metallic glass films with superior and tunable mechanical properties is produced by pulsed laser deposition. The process can be controlled to synthetize a wide range of film microstructures including dense fully amorphous, amorphous embedded with nanocrys- tals and amorphous nano-granular. A unique dense self-assembled nano-laminated atomic arrangement characterized by alternating Cu-rich and Zr/O-rich nanolayers with different local chemical enrichment and amorphous or amorphous-crystalline composite nanostructure has been discovered, while significant in-plane clustering is reported for films synthetized at high deposition pressures. This unique nanoarchi- tecture is at the basis of superior mechanical properties including large hardness and elastic modulus up to 10 and 140 GPa, respectively and outstanding total elongation to failure ( > 9%), leading to excel- lent strength/ductility balance, which can be tuned by playing with the film architecture. These results pave the way to the synthesis of novel class of engineered nanostructured metallic glass films with high structural performances attractive for a number of applications in microelectronics and coating industry.
- Affiliations
Politecnico di Milano Laboratorio Materiali Micro e Nanostrutturati UniversitéSorbonne Paris Nord Laboratoire des Sciences des Procédés et des Matériaux (LSPM) University of Antwerp Electron Microscopy for Materials Science (EMAT) University of Antwerp NANOlab Center of Excellence Politecnico di Milano Laboratory of Supramolecular and Bio-Nanomaterials (SupraBioNanoLab) CNRS-Universitéde Poitiers-ENSMA Institut Pprime Norwegian University of Science and Technology (NTNU Department of Physics
Citations
Ghidelli, M., Orekhov, A., Bassi, A. L., Terraneo, G., Djemia, P., Abadias, G., Nord, M., Béché, A., Gauquelin, N., Verbeeck, J., Raskin, J.-P., Schryvers, D., Pardoen, T., & Idrissi, H. (2021). Novel class of nanostructured metallic glass films with superior and tunable mechanical properties. Acta Materialia, 213, 116955. https://doi.org/10.1016/j.actamat.2021.116955 (Original work published 2021)