Preprint Article Version 1 This version is not peer-reviewed

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

Version 1 : Received: 20 March 2017 / Approved: 21 March 2017 / Online: 21 March 2017 (04:26:13 CET)

A peer-reviewed article of this Preprint also exists.

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

Journal reference: Metals 2017, 7, 171
DOI: 10.3390/met7050171

Abstract

Aluminum base alloys containing chromium (Cr) and zinc (Zn) were produced using extrusion and heat treated powder metallurgy. Cr addition ranged between 5 to 10 wt. % while Zn was added in an amount between 0 to 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 produced alloys. 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 10wt. % Chromium and heat treated at 500°C for one hour followed by water quenching exhibited the highest wear resistance and better mechanical properties.

Subject Areas

Al-Zn-Cr Alloys; powder metallurgy; strengthening; extrusion; dry sliding wear

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