• Olejnik, Lech
• Ciemiorek-Bartkowska, Marta
• Chromiński, Witold
• Lewandowska, Małgorzata

Abstract

Rectangular plates of technically pure 1050 aluminum processed by Incremental Equal Channel AngularPressing were evaluated in terms of anisotropy and formability. After 8 passes, the plates exhibit in planar andthrough thickness isotropy which manifest by the independence of YS, UTS and rα -values on the testingdirection and fairly uniform distribution of microhardness across thickness. Such properties were attributed torandomized texture developed during processing and uniform microstructure with ultrafine equiaxed grains inall three plate's planes. The values of the parameters describing ability for deep drawing are very promising as rvalues only slightly decrease with I-ECAP passes while they became independent on testing direction. Thisindicates that although the processed plates are slightly prone to wall thinning (typical for aluminum alloys),they are resistant to earing formation, which is one of the main technological problem in deep drawing. Thecombination of isotropic parameters, enhanced mechanical strength and suitable ability to deep drawing mayyield attractive products with a considerable potential for further forming.

Topics

• impedance spectroscopy
• grain
• aluminium
• strength
• texture
• isotropic
• drawing