- Tytuł:
-
Effect Of Severe Plastic Deformation On Microstructure Evolution Of Pure Aluminium
Wpływ intensywnego odkształcenia plastycznego na ewolucję mikrostruktury czystego aluminium - Autorzy:
-
Leszczyńska-Madej, B.
Richert, M. W.
Perek-Nowak, M. - Powiązania:
- https://bibliotekanauki.pl/articles/352122.pdf
- Data publikacji:
- 2015
- Wydawca:
- Polska Akademia Nauk. Czytelnia Czasopism PAN
- Tematy:
-
severe plastic deformation
ultra-fine grained aluminium
microstructure characterization
ECAP
hydrostatic extrusion
intensywne odkształcenia plastyczne
aluminium
mikrostruktura
wyciskanie hydrostatyczne - Opis:
- Processes of severe plastic deformation (SPD) are defined as a group of metalworking techniques in which a very large plastic strain is imposed on a bulk material in order to make an ultra-fine grained metal. The present study attempts to apply Equal-Channel Angular Pressing (ECAP), Hydrostatic Extrusion (HE) and combination of ECAP and HE to 99.5% pure aluminium. ECAP process was realized at room temperature for 16 passes through route Bc using a die having an angle of 90°. Hydrostatic extrusion process was performed with cumulative strain of 2.68 to attain finally wire diameter of d = 3 mm. The microstructure of the samples was investigated by means of transmission and scanning electron microscopy. Additionally, the microhardness was measured and statistical analysis of the grains and subgrains was performed. Based on Kikuchi diffraction patterns misorientation was determined. The measured grain/subgrain size show, that regardless the mode of deformation process (ECAP, HE or combination of ECAP and HE processes), grain size is maintained at a similar level – equal to d = 0.55-0.59 μm. A combination of ECAP and HE has achieved better properties than either single process and show to be a promising procedure for manufacturing bulk UFG aluminium.
- Źródło:
-
Archives of Metallurgy and Materials; 2015, 60, 2B; 1437-1440
1733-3490 - Pojawia się w:
- Archives of Metallurgy and Materials
- Dostawca treści:
- Biblioteka Nauki