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X-ray Peak Profile Analysis on the Microstructure of Al-5.9%Mg-0.3%Sc-0.18%Zr Alloy Deformed by High Pressure Torsion Straining

Gubicza, Jenő and Fátay, Dániel and Nyilas, Krisztián and Bastarash, Elena and Dobatkin, Sergey and Ungár, Tamás (2004) X-ray Peak Profile Analysis on the Microstructure of Al-5.9%Mg-0.3%Sc-0.18%Zr Alloy Deformed by High Pressure Torsion Straining. In: Proceedings of the 2nd International Conference on Nanomaterials by Severe Plastic Deformation: Fundamentals – Processing – Applications. Wiley - VCH Verlag GmbH - KGaA, Malden, pp. 420-425. ISBN 9783527306596

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Abstract

The microstructure of plastically deformed Al-5.9%Mg-0.3%Sc-0.18%Zr alloy has been investigated. The severe plastic deformation has been performed by high pressure torsion straining (HPT) up to 15 revolutions at room temperature. The microstructure as a function of the number of revolutions is studied by X-ray diffraction peak profile analysis. It is concluded that the HPT technique results in nanostructure even after 0.5 turn with very high dislocation density. The crystallite size decreases and the dislocation density increases with the number of revolutions, however, after five turns they go into saturation. The edge and the dipole character of the dislocation structure becomes stronger with the increase of the number of revolutions. The value of the crystallite size determined by X-ray peak profile analysis is a bit smaller than the grain size obtained by transmission electron microscopy (TEM).

Item Type: Book Section
Additional Information: Konferencia helye, ideje: Bécs, Ausztria, 2002.12.09-2002.12.13.
Subjects: Q Science / természettudomány > QC Physics / fizika
Depositing User: Erika Bilicsi
Date Deposited: 03 Apr 2013 11:36
Last Modified: 03 Apr 2013 11:36
URI: http://real.mtak.hu/id/eprint/4565

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