University of Oulu

Abdel-Aziem, W., Hassan, M.A., Makino, T. et al. Microstructure, Mechanical Properties of Extruded Aluminum at Different Ram Speeds in Micro/Meso-Scale. Metallogr. Microstruct. Anal. 10, 402–409 (2021).

Microstructure, mechanical properties of extruded aluminum at different ram speeds in micro/meso-scale

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Author: Abdel-Aziem, Walaa1; Hassan, Mohsen A.2; Makino, Takehiko3;
Organizations: 1Department of Mechanical Design and Production Engineering, Faculty of Engineering, Zagazig University, P.O. Box 44519, Zagazig, Egypt
2Egypt-Japan University of Science and Technology, P. O. Box 179, New Borg El-Arab City, 21934, Alexandria, Egypt
3Department of Mechanical Engineering, Nagoya Institute of Technology, Gokiso-cho, Showa-ku, Nagoya, Aichi, 466-8555, Japan
4Kerttu Saalasti Institute, University of Oulu, Pajatie 5, 85500, Nivala, Finland
Format: article
Version: accepted version
Access: open
Online Access: PDF Full Text (PDF, 0.8 MB)
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Language: English
Published: Springer Nature, 2021
Publish Date: 2023-04-18


Commercially pure aluminum was deformed via the extrusion process at different strain rates considering the temperature rising during the deformation, i.e., with different Zener–Hollomon parameters (Z), to investigate the effect of Z on its grain structure and tensile properties in the micro/meso-scale. The results demonstrate that deformation-induced grain refinement was obtained by increasing the values of the Z. Besides, the dislocation density of the aluminum specimens increased with the strain rate which is in conformity with the Orowan equation. An apparent increment in yield and tensile strength was observed in the deformed aluminum with increasing the value of Z parameter. This can be attributed to two strengthening mechanisms, i.e., by combining the Hall–Petch relation (strain hardening due to the grain refining) and Taylor equation (owing to dislocation–dislocation interactions).

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Series: Metallography, microstructure and analysis
ISSN: 2192-9262
ISSN-E: 2192-9270
ISSN-L: 2192-9262
Volume: 10
Issue: 4
Pages: 402 - 409
DOI: 10.1007/s13632-021-00753-7
Type of Publication: A1 Journal article – refereed
Field of Science: 216 Materials engineering
Copyright information: © ASM International 2021. This version of the article has been accepted for publication, after peer review (when applicable) and is subject to Springer Nature’s AM terms of use, but is not the Version of Record and does not reflect post-acceptance improvements, or any corrections. The Version of Record is available online at: