NDLI: Effect of Film Formation Potential on Passive Behavior of Ultra-Fine-Grained 1050 Al Alloy Fabricated via ARB Process

Content Provider	Springer Nature Link
Author	Fattah alhosseini, A. Gashti, S. O. Keshavarz, M. K.
Copyright Year	2016
Abstract	In this work, the effect of film formation potential on the passive behavior of ultra-fine-grained 1050 Al alloy in a borate buffer solution is investigated. For this purpose, the specimens were fabricated via accumulative roll bonding (ARB) process up to 1, 3, 5, and 7 passes. To determine the evolution of microstructure as a function of ARB process, atomic force microscopy (AFM) and transmission electron microscopy (TEM) were used. AFM images revealed that the grain size values decreased as the number of ARB passes increased. Moreover, TEM micrograph showed that mean grain size of the sample reached to about 340 nm after applying 7 passes of ARB. Potentiodynamic polarization plots indicated that, as the number of ARB passes increased, the corrosion and passive current densities decreased. Also, electrochemical impedance spectroscopy measurements showed that at selected applied potential above open circuit potential, the corrosion resistance of the 1050 Al alloy was systematically increased by applying further ARB passes. It was found that passive behavior of the ARBed 1050 Al alloy specimens were improved by reducing the grain size.
Starting Page	1683
Ending Page	1689
Page Count	7
File Format	PDF
ISSN	10599495
Journal	Journal of Materials Engineering and Performance
Volume Number	25
Issue Number	4
e-ISSN	15441024
Language	English
Publisher	Springer US
Publisher Date	2016-03-16
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	AFM Al alloy EIS formation potential passive behavior UFG Characterization and Evaluation of Materials Tribology, Corrosion and Coatings Quality Control, Reliability, Safety and Risk Engineering Design
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Mechanical Engineering

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