Nanocrystallization and Dissolution of Immiscible Powder Alloys Using High Pressure Torsion
- Author(s)
- Susi Kahofer, Michael Zehetbauer, Herbert Danninger, Erhard Schafler, Michael Kerber, Jelena Horky
- Abstract
Precompacts out of immiscible systems CuCr (75/25 wt%) and WCu (80/20 wt%), respectively, were made by pressing mixed powders and sintering. By applying different strains and hydrostatic pressures of HPT at room temperature, disc-shaped samples with a diameter of 8 mm were produced. They were investigated by Light Microscopy, Scanning-Electron Microscopy using Back-Scattered Electrons, and X-ray Line Profile Analysis. In addition, Vickers microhardness data were collected. Both systems showed the highest microhardness at a shear strain of about gamma = 170. The density (for the case of Cu25Cr) of the consolidated material could be increased to the theoretical value. Microhardness and grain sizes were studied individually for each of the phases, too.
- Organisation(s)
- Physics of Nanostructured Materials
- External organisation(s)
- Technische Universität Wien
- Journal
- Materials Science Forum
- Volume
- 667-669
- Pages
- 151-156
- No. of pages
- 6
- ISSN
- 0255-5476
- DOI
- https://doi.org/10.4028/www.scientific.net/MSF.667-669.151
- Publication date
- 2010
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy, 210006 Nanotechnology, 103018 Materials physics
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/nanocrystallization-and-dissolution-of-immiscible-powder-alloys-using-high-pressure-torsion(d6106510-a802-4ecf-87c6-30ae1aaa6dc1).html