High-pressure torsion deformation of a magnesium-based nanocomposite
- Author(s)
- Zoltan Száraz, Zuzanka Trojanová, Michael Zehetbauer
- Abstract
Discs of microcrystalline magnesium reinforced with Al2O3 nanoparticles were deformed by high-pressure torsion at room temperature. Hydrostatic pressures from 1 to about 4 GPa were used and discs were deformed from 0.5 up to 2 rotations. The in-situ flow stress curves were obtained and transformed into resolved shear stress/resolved shear strain curves. In-situ stress – strain curves indicate some softening effects, which probably arise from recrystallisation. The evolution of microstructure was observed with methods of light microscopy and transmission electron microscopy. Radial dependence of the microstructure was also monitored with microhardness measurements. The high-pressure torsion deformation also affects the distribution of the reinforcing particles in the hexagonal matrix.
- Organisation(s)
- Physics of Nanostructured Materials
- External organisation(s)
- Charles University Prague
- Journal
- Journal of Materials Research
- Volume
- 100
- Pages
- 906-909
- No. of pages
- 4
- ISSN
- 0884-2914
- DOI
- https://doi.org/10.3139/146.110126
- Publication date
- 2009
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 103023 Polymer physics, 210006 Nanotechnology, 103018 Materials physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/highpressure-torsion-deformation-of-a-magnesiumbased-nanocomposite(ca85f2c7-f3da-46ad-95f6-5f6bf207c9df).html