[Kovove materialy - Metallic materials]
    Sat - September 19, 2020 - 05:06 No. of hits : 1175093 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 52 (2014), Issue 6

Microstructure and deformation behaviour of the ECAP Al-Mn-Sc-Zr alloy
MALEK, P., CIESLAR, M.
vol. 52 (2014), no. 6, pp. 329 - 335

Abstract
The Al-Mn alloy stabilized by the addition of Sc and Zr was subjected to equal-channel angular pressing (ECAP) at room temperature. The microstructure evolution as a function of the number of ECAP passes was studied by transmission electron microscopy. The room temperature strength was characterized by microhardness measurements and tensile tests. The stability of the very fine-grained microstructure and strength characteristics were studied at elevated temperatures. Due to a good microstructure stability even after annealing at 500 °C the possibility of superplastic behaviour was tested. The value of the strain rate sensitivity parameter m exceeding the bottom limit of superplastic behaviour was found.

Key words
Al-alloys, ECAP, microstructure, mechanical properties, superplasticity

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Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


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