Influence of loading rate on the mechanical performance of metallic glass
| Autor: | Maria Hurakova, Alena Juríková, Jeff Th. M. De Hosson, Stefan Demcak, Jozef Miškuf, Kornel Csach, Vaclav Ocelik |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Population Pop-ins 02 engineering and technology Cube corner indenter 01 natural sciences Indentation hardness Nanoindentation Hardness Indentation 0103 physical sciences Materials Chemistry Composite material education 010302 applied physics education.field_of_study Loading rate Amorphous metal 021001 nanoscience & nanotechnology Condensed Matter Physics Electronic Optical and Magnetic Materials Amorphous solid Shear (sheet metal) Metallic glass Ceramics and Composites Deformation (engineering) 0210 nano-technology |
| Zdroj: | Journal of Non-Crystalline Solids, 470, 160-167. ELSEVIER SCIENCE BV |
| ISSN: | 0022-3093 |
| DOI: | 10.1016/j.jnoncrysol.2017.05.023 |
| Popis: | Amorphous metallic glass Cu47Ti35Zr11Ni6Si1 was investigated by load-control nanoindentation experiments using the cube corner indenter tip over a wide range of loading rates. The indentation hardness was calculated using different methods either from the loading curves or indent area. Pop-in events were observed on the loading part of the indentation curves mainly at lower rates of loading. Instantaneous plastic deformation decreases with increasing loading rate according to a power law. At high loading rate the instantaneous deformation is suppressed by continuous plastic deformation and no well-developed pop-ins are observed. The morphology of shear bands in the pile-up area of indents showed no correlation with the pop-in event population of the nanoindentation curves and the loading rate. |
| Databáze: | OpenAIRE |
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