Abstract
AA5454-O is an easily wrought, or in other words, a ductile aluminium alloy, however, its mechanical properties are inferior as compared to those of other alloys. The change taking place in corrosion resistance of AA5454-O alloy as a result of its severe plastic deformation (SPD) by rolling has been investigated in this study. It has been observed that significant changes occurred in abrasion wear and corrosion resistances of AA5454-O alloy, which was severely deformed up to 80 % by rolling process. Corrosion resistance of the alloy that was severely deformed by rolling has increased. The effect of deformation rate on corrosion has been investigated by applying potentiodynamic test whereas on the other hand such change has been evidenced also through corrosion test. It has been observed that friction coefficient of severely deformed AA5454-O alloy varied by around 10 %, and that, associated with such change, its wear resistance also increased considerably. It has been determined that, as a result of severe deformation by rolling, hardness values rose in areas where the alloy was in contact with rolling surface. In this study, wear resistance of severely deformed alloy has been investigated as well. It has been observed that deformation value contributed positively to the increase in wear resistance.DOI: http://dx.doi.org/10.5755/j01.ms.23.1.14650
Highlights
Aluminium, a major characteristic of which is corrosion resistance, is being widely used in automotive, space research and marine industries because of this property
Significant changes have occurred in corrosion behaviour of commercially pure titanium after it was processed by application of severe plastic deformation (SPD) [14, 15]
Ecorr and Acorr values have got higher in parallel to the increase in deformation rate and corrosion resistance has been provided by means of severe plastic deformation [15 – 19]
Summary
A major characteristic of which is corrosion resistance, is being widely used in automotive, space research and marine industries because of this property. Aluminium 5454-O alloy is so important for corrosion, wear and it has got good resistance, in particular to seawater and general environmental conditions It can be used for road transport body-building, chemical and process plant, marine, pressure vessels, containers, boilers. Hot rolling exerts significant effects on mechanical behaviour of materials Since this process may at the same time be regarded as an SPD procedure, it changes corrosion behaviour at a considerable level [12, 13]. Resistance of grains to corrosion behaviour in Hank solution could not be explained fully For this reason, studies concerned with corrosion behaviour of alloys containing Mg have become increasingly important
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