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Open AccessArticle

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

Department of Production Engineering & Mechanical Design, Faculty of Engineering, Port-Said University, Port Fouad 42523, Egypt
Mechanical Engineering Department, Unaizah College of Engineering, Qassim University, Unaizah 51911, Saudi Arabia
Mechanical Engineering Department, Faculty of Engineering, Suez Canal University, Ismailia 41522, Egypt
Author to whom correspondence should be addressed.
Academic Editor: Manoj Gupta
Metals 2017, 7(5), 171;
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)
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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MDPI and ACS Style

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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