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
ISSN: 0003-5599
Article publication date: 20 September 2018
Issue publication date: 30 October 2018
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
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