[Kovove materialy - Metallic materials]
    Fri - March 29, 2024 - 15:04 No. of hits : 1736714 ISSN 1338-4252 (online) ISSN 0023-432X (printed)
© Institute of Materials and Machine Mechanics, Slovak Academy of Sciences, Bratislava, Slovak Republic

VOLUME 43 (2005), Issue 4

Superplastic behaviour of the Al-Mg-Sc-Zr alloy processed by ECAP
MALEK, P., CIESLAR, M., BARTUSKA, P., DRBOHLAV, I.
vol. 43 (2005), no. 4, pp. 245 - 257

Abstract
A very fine-grained Al-1.5wt.%Mg alloy stabilised by small amounts of Sc and Zr was prepared using ECAP. The values of ductility and strain rate sensitivity parameter m corresponding to superplastic behaviour were found in tensile tests at temperatures above 573 K. The optimum superplastic behaviour was observed at strain rates of the order of 10-2.s-1. The surface examination of slightly strained samples by atom force microscopy revealed that grain boundary sliding did not occur at all interfaces. The diversity of misorientation angles is probably responsible for this effect.

Key words
Al-Mg-Sc-Zr alloy, ECAP, submicrocrystalline microstructure, uperplasticity, grain boundary sliding

[open article.pdf] Full text (998 KB)

[IMMS SAS]      UMMS SAV - Bratislava (SK) Personal data Protection   ver. 1.8.0      [go to HOME PAGE]
Full title of this journal is bilingual: Kovové materiály - Metallic Materials.
The official abbreviation in accordance with JCR ISI is Kovove Mater.


Article abstracts updated: 2023-10-26 07:45      
Articles in press revised: 2024-03-26 11:42     
Full text pdf uploaded: 2023-11-08 06:53    
Information updated: 2023-04-19 16:14   
Code last revised: 2024-03-06 11:13  

© OldSoft, 2004, …, 2024