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Metals 2017, 7(5), 171; doi:10.3390/met7050171

Mechanical and Corrosion Behavior of Al-Zn-Cr Family Alloys

1
Department of Production Engineering & Mechanical Design, Faculty of Engineering, Port-Said University, Port Fouad 42523, Egypt
2
Mechanical Engineering Department, Unaizah College of Engineering, Qassim University, Unaizah 51911, Saudi Arabia
3
Mechanical Engineering Department, Faculty of Engineering, Suez Canal University, Ismailia 41522, Egypt
*
Author to whom correspondence should be addressed.
Academic Editor: Manoj Gupta
Received: 9 February 2017 / Revised: 29 April 2017 / Accepted: 3 May 2017 / Published: 12 May 2017
(This article belongs to the Special Issue Metal Matrix Composites)
View Full-Text   |   Download PDF [4200 KB, uploaded 16 May 2017]   |  

Abstract

Aluminum base alloys containing chromium (Cr) and zinc (Zn) were produced using extrusion and powder metallurgy techniques. Cr additions ranged between 5 to 10 wt. %, while Zn was added in an amount between 0 and 20 wt. %. Heat treatment processes were performed during powder metallurgy process, at different temperatures, followed by water quenching. Similar alloys were extruded with an extrusion ratio of 4.6 to get proper densification. Optical microscopy was used for microstructure investigations of the alloys investigated. The element distribution microstructure study was carried out using the Energy Dispersive X-ray analysis method. Hardness and tensile properties of the investigated alloys have been examined. Wear resistance tests were carried out and the results were compared with these of the Al-based bulk alloys. Results showed that the aluminum base alloys, containing 10 wt. % Cr and heat treated at 500 °C for one hour followed by water quenching, exhibited the highest wear resistance and better mechanical properties. View Full-Text
Keywords: Al-Zn-Cr alloys; powder metallurgy; strengthening; extrusion; dry sliding wear Al-Zn-Cr alloys; powder metallurgy; strengthening; extrusion; dry sliding wear
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Nassef, A.; El-Garaihy, W.H.; El-Hadek, M. Mechanical and Corrosion Behavior of Al-Zn-Cr Family Alloys. Metals 2017, 7, 171.

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