Strain localization in nanocrystalline iron after Severe Plastic Deformation
|Malgorzata Sus-Ryszkowska 1, Grzegorz Dymny 2, Zbigniew Pakieła 1, Michal Miskiewicz 1, Krzysztof J. Kurzydlowski 1|
1. Warsaw University of Technology, Faculty of Materials Science and Engineering (InMat), Wołoska 141, Warszawa 02-507, Poland
In the present work technically pure iron was subjected to severe plastic deformation (SPD) by equal channel angular pressing (ECAP) which brought about significant refinement of microstructure. Characteristic inhomogeneous, banded structure was observed in micro- and macro-scale. Hardness investigations at macro-, micro- and nanometrical level and tensile tests of micro-samples were carried out. The fracture surface observations show that failure mode depends on microstructure banding. Plastic strain localization in tensile micro-samples was observed via multiple-twin beam reticular interferometry method. Plastic behaviour of the material has also been modelled by Finite Element Method (FEM).
Presentation: poster at E-MRS Fall Meeting 2003, Symposium G, by Malgorzata Sus-Ryszkowska
See On-line Journal of E-MRS Fall Meeting 2003
Submitted: 2003-05-13 16:38 Revised: 2009-06-08 12:55