Monday, 3 October, 2011, 16:10
Posted by Jagoda Poplewska
In 27-30.09.2011 in Krynica I attended in 39th School in Materials Science. Posted by Jagoda Poplewska
I presented the presentation (based on the article) during session A (non-ferrous metal alloys).
Below the abstract of mine article:
OF AA1050 ALUMINIUM ALLOY PROCESSED BY ECAP
Abstract
This paper describes the development of microstructure after deformation and during recrystallization of AA1050 aluminium processed by equal channel angular pressing (ECAP). The nucleation of new grains and further grain growth were observed in bulk samples after static recrystallization at 270°C. The samples were deformed along route A (no rotation between consecutive passes) through 6 passes, then slightly annealed to obtain the different states of recrystallization. The microstructure was analyzed using high resolution scanning electron microscopy equipped with the local orientation measurements facility. It was observed that the ECAP-processing lead to strong microstructure fragmentation. The as-deformed microstructure was composed of flat (pancake-type) grains with the distance between high angle boundaries in normal direction of about 0.35µm. The low temperature recrystallization led very quickly to microstructure globularization and to their coarsening. After more advanced recrystallization stages the inhomogeneous structure composed of grain classes of different sizes were observed.
Keywords: AA1050 Aluminium alloy; ECAP; Recovery and rekrystallization; Grain growth; EBSD;
One of the goal of this conference was integration PhD students involved in the field of ‘Materials Science’. In this conference about 120 people were attended from seventeen centers in Poland.
There were invited well-known professors who gave lectures on:
- Professor Miroslaw Handke: ‘Silicate materials - from Stone Age to the Present’;
- Professor Marian Szczerka: ‘Tribology - friction and wear in the macro-, micro-and nono-scale’.
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