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Effect of temperature and pressure on mechanical, surface and electrochemical properties of Al-1.5Cu-5.5Zn-2.5Mg (Alumix-431)

Ayşe Nur Acar (Department of Mechanical Engineering, University of Cukurova, Adana, Turkey)
Rasiha Nefise Mutlu (Department of Chemistry, University of Cukurova, Adana, Turkey)
Abdul Kadir Ekşi (Department of Mechanical Engineering, University of Cukurova, Adana, Turkey)
Ahmet Ekicibil (Department of Physics, University of Cukurova, Adana, Turkey)
Birgül Yazıcı (Department of Chemistry, University of Cukurova, Adana, Turkey)

Anti-Corrosion Methods and Materials

ISSN: 0003-5599

Article publication date: 20 September 2018

Issue publication date: 30 October 2018

248

Abstract

Purpose

The purpose of this paper is to examine new alloys created from Alumix 431 powder and investigate their mechanical and electrochemical properties.

Design/methodology/approach

In this study; Alumix-431 alloy samples were prepared using the powder metallurgy (P/M) method applying cold (RT) and warm (50°C and 80°C) compaction methods under pressures of 200 and 250 MPa and were sintered at 600°C in N2(g) atmosphere. Hardness and density of the samples were measured, and corrosion properties were determined by electrochemical impedance spectroscopy charting polarization curves. Surface characterization was determined by contact angle, scanning electron microscopy/mapping, energy dispersive X-ray spectrometry and X-ray diffractometry images.

Findings

Alumix-431 alloys obtained upon compaction at 250 MPa/50 °C had the highest mechanical properties and corrosion resistance and good surface properties. On the surfaces of Alumix-431 alloys, α-Al, MgZn2, Al2,CuMg, Al2,O3, Al2MgO4 phases were recorded.

Originality/value

This study aimed to construct a correlation between mechanical and electrochemical properties of the newly created alloys (prepared under special conditions).

Keywords

Acknowledgements

This study was supported by Research Funds of Çukurova University, Adana, Turkey, under Grant contract no. FBA-2016-5249 and FDK-2015-5386. We are thankful to the Research Funds of Çukurova University.

Citation

Acar, A.N., Mutlu, R.N., Ekşi, A.K., Ekicibil, A. and Yazıcı, B. (2018), "Effect of temperature and pressure on mechanical, surface and electrochemical properties of Al-1.5Cu-5.5Zn-2.5Mg (Alumix-431)", Anti-Corrosion Methods and Materials, Vol. 65 No. 6, pp. 558-571. https://doi.org/10.1108/ACMM-03-2018-1909

Publisher

:

Emerald Publishing Limited

Copyright © 2018, Emerald Publishing Limited

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