Corrosion Behaviour of Hot Rolled AA8015 in Natural Seawater at 1.37 µm Surface Roughness

O. Olaogun*, Esther Titilayo Akinlabi

*Corresponding author for this work

Research output: Chapter in Book/Report/Conference proceedingConference contributionpeer-review


Aluminium alloy 8015 (AA8015) is a general-purpose alloy having a wide range of applications that include household appliances and marine ship structures. Electrochemical testing of hot rolled AA8015 with a particular roughness immersed in natural seawater solution was investigated. The AA8015 under investigation in this research is manufactured by a continuous casting method and subjected to mechanical hot rolling process at a temperature above its recrystallization temperature into 7 mm thickness plate. A roughness average of 1.37 µm with three cold-mounted samples was accomplished on an automatic dual multi-purpose grinding-polishing machine with the aid of 320 grit silicon carbide waterproof paper sheet. Corrosion experiments via electrochemical reactions were conducted on the corrosion samples immersed in natural seawater with the aid of a computerized controlled Ivium potentiostat in an open electrochemical polarization cell arrangement at ambient temperature condition. Observation of the surface morphologies of the corroded samples was achieved by a high megapixel camera and scanning electron microscope (SEM). Findings show asymmetric polarization curves for all the investigated samples, showing an actively corroding region. Consequently, the SEM examination confirms corrosion occurring at localized areas in the form of pitting.

Original languageEnglish
Title of host publicationTrends in Manufacturing and Engineering Management - Select Proceedings of ICMechD 2019
EditorsS. Vijayan, Nachiappan Subramanian, K. Sankaranarayanasamy
Number of pages10
ISBN (Electronic)9789811547454
ISBN (Print)9789811547447
Publication statusPublished - 20 Aug 2020
Externally publishedYes
Event2nd International Conference on Mechanical Engineering Design, ICMechD 2019 - Chennai, India
Duration: 25 Apr 201926 Apr 2019

Publication series

NameLecture Notes in Mechanical Engineering
ISSN (Print)2195-4356
ISSN (Electronic)2195-4364


Conference2nd International Conference on Mechanical Engineering Design, ICMechD 2019

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