The paper describes the results of structure and properties tests of flat bars made of alloy WE43 obtained in the process of extrusion with the use of KOBO method. An analysis of structure changes was conducted both in initial state and after plastic deformation.
A quantitative analysis of the material was also conducted with the use of METILO program. The paper also presents results of mechanical tests marked in the uniaxial tensile testing in room temperature and in elevated temperature for achieved flat bars. Fractographic tests were conducted after tensile test in order to determine the mechanism of cracking.
 W.J. Kim, Y.K. Sa: Micro extrusion of ECAP processed alloy for production of high strength magnesium micro-gears, Scripta Materialia 54, 2006.
 E. Hadasik E., D. Kuc, G. Niewielski, R. Śliwa, Development of magnesium alloys for plastic treatment, Metallurgist- Metallurgical News 8, 580-584 (2010).
 E. Hadasik, D. Kuc, Plastic treatment of magnesium alloys, Plastic treatment of metals, Metal Forming 24, 2, 131-147 (2013).
 W. Bochniak, A. Korbel, P. Ostachowski, S. Źiółkowicz, J. Borowski, Extrusion of metals and alloys with the use of KOBO method, Plastic treatment 24, 2,83-97(2013).
 A. Korbel, W. Bochniak, J. Borowski, L. Błaż, P. Ostachowski, M. Łagoda,Anomalies in precipitation hardening process of 7075 aluminum alloy extruded by KOBO method, Journal of Materials Processing Technology 216, 60÷168 (2015).
 A. Korbel, W. Bochniak, Lüders deformation and superplastic flow of metals extruded by KOBO method. Philosophical Magazine 93, 15, 1883÷1913 (2013).
 A. Korbel, W. Bochniak P. Ostachowski, A. Paliborek, Mechanical properties of aluminum extruded by KOBO method with direct and lateral outflow. International Journal of Materials Research 102, 10, 974-79 (2013).
 J. Szala, Application of computer picture analysis methods to quantitative assessment of structure in materials, Scientific Journals of Silesian University of Technology, Series Metallurgy, Gliwice 2008.
 A. Mrugała, I. Bednarczyk, Characteristics of microstructure and properties of flat bar extruded from light alloys with the use of method in complex state of strain, Hutnik-Wiadomości- Hutnicze 8, 533-536 (2015).