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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)

A. Acar, Rasiha Nefise Mutlu, A. K. Ekşi, A. Ekicibil, Birgül Yazıcı
Published 2018 · Materials Science

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The purpose of this paper is to examine new alloys created from Alumix 431 powder and investigate their mechanical and electrochemical properties.,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.,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.,This study aimed to construct a correlation between mechanical and electrochemical properties of the newly created alloys (prepared under special conditions).
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