"Perspective of nanomaterials production by cyclic extrusion compression method of exerting unconventional, large plastic deformations."
|Maria Richert , Sonia Boczkal 1, Jan Richert 1, Józef Zasadziński 1|
1. AGH University of Science and Technology (AGH), al. Mickiewicza 30, Kraków 30-059, Poland
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 j = 0,4 - 14. It has been found that about 50% of the volume fraction of aluminium alloys samples, deformed to the true strain j = 14, shows features of nanostructure. This kind of microstructure consists of nanograins with the average dimension of about 150 - 200 nm, having large misorientation. 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 have been formed, showing large misorientation angles.
Presentation: oral at E-MRS Fall Meeting 2003, Symposium G, by Maria Richert
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-05 17:09 Revised: 2009-06-08 12:55