Szczegóły publikacji
Opis bibliograficzny
Perspective of nanomaterials production, by cyclic extrusion compression method of exerting unconventional, large plastic deformations / Maria RICHERT, Sonia HAWRYŁKIEWICZ, Jan RICHERT, Józef ZASADZIŃSKI // Diffusion and Defect Data – Solid State Data. Part B, Solid State Phenomena ; ISSN 1012-0394. — 2005 — vols. 101–102, s. 37–42. — Bibliogr. s. 42, Abstr. — Publikacja dostępna online od: 2005-01-15. — Bulk and graded nanometals : proceedings of symposium G European Materials Research Society : fall meeting 2003 : Warsaw 15th–19th September, 2003 / eds. K. J. Kurzydłowski, Z. Pakieła ; EMRS
Autorzy (4)
Słowa kluczowe
Dane bibliometryczne
| ID BaDAP | 25744 |
|---|---|
| Data dodania do BaDAP | 2006-01-27 |
| Tekst źródłowy | URL |
| DOI | 10.4028/www.scientific.net/SSP.101-102.37 |
| Rok publikacji | 2005 |
| Typ publikacji | referat w czasopiśmie |
| Otwarty dostęp |  |
| Czasopismo/seria | Diffusion and Defect Data. Solid State Data, Part B. Solid State Phenomena |
Abstract
Aluminium and copper monocrystals and also AlMg5 and AlCu4Zr alloys have been deformed by the cyclic extrusion compression method (CEC) in the range of true strains phi = 0.4 -14. It has been found, that about 50% of the volume fraction of aluminium alloys samples, deformed to the true strain phi = 14, shows features of nanostructure. This kind of microstructure consists of nanograins with the average dimension of about 150 - 200 nm, having large misorientations. The investigations indicate that mutually crossing of microbands is the main mechanism of formation of nanograins. In the areas of mutually crossing microbands, the nanograins, which have been formed, are showing large misorientation angles. In aluminium and copper monocrystals, also about 50% of the investigated subgrains, showed large misorientation, however their size was much larger than the typical nanograin size. In aluminium monocrystals it showed dimension of about 600 nm. In copper monocrystals subgrains had average dimension of about 200 nm and were more closed to the typical nanosize grains in the polycrystals. The aluminium alloys, deformed to the true strain of about 14 revealed very high level of microhardness (about 100 muHV), comparable with the level of properties, characteristic for nanomaterials produced by other methods. The level of microhardness of copper monocrystals, after a true strain of 14 by the CEC method, was comparable to the microhardness of copper obtained by the condensation - evaporation method. The obtained results indicate, that using the CEC method, it is possible to produce bulk nanomaterials, especially from the aluminium alloys, which reveal the unconventional large level of mechanical properties.
