Nanocrystalline Zr(3)Al made through amorphization by repeated cold rolling and followed by crystallization
- Author(s)
- David Geist, Seiichiro Ii, Koichi Tsuchiya, Hans-Peter Karnthaler, Georgi Stefanov, Christian Rentenberger
- Abstract
he intermetallic compound Zr(3)Al is severely deformed by the method of repeated cold rolling. By X-ray diffraction it is shown that this leads to amorphization. TEM investigations reveal that a homogeneously distributed debris of very small nanocrystals is present in the amorphous matrix that is not resolved by X-ray diffraction. After heating to 773 K, the crystallization of the amorphous structure leads to a fully nanocrystalline structure of small grains (10-20 nm in diameter) of the non-equilibrium Zr(2)Al phase. It is concluded that the debris retained in the amorphous phase acts as nuclei. After heating to 973 K the grains grow to about 100 nm in diameter and the compound Zr(3)Al starts to form, that is corresponding to the alloy composition.
- Organisation(s)
- Physics of Nanostructured Materials
- External organisation(s)
- Research and Services Division of Materials Data and Integrated System, Bulgarian Academy of Sciences (BAS)
- Journal
- Journal of Alloys and Compounds
- Volume
- 509
- Pages
- 1815-1818
- No. of pages
- 4
- ISSN
- 0925-8388
- DOI
- https://doi.org/10.1016/j.jallcom.2010.10.050
- Publication date
- 2011
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy, 210006 Nanotechnology, 103018 Materials physics
- Portal url
- https://ucris.univie.ac.at/portal/en/publications/nanocrystalline-zr3al-made-through-amorphization-by-repeated-cold-rolling-and-followed-by-crystallization(64e6f933-2579-4547-9ecf-9531d8e77a9c).html