journal article·2020-01-05Open access

Review—Corrosion-Resistant Metastable Al Alloys: An Overview of Corrosion Mechanisms

J. Esquivel, R. K. Gupta

Abstract

Commercial aluminum alloys exhibit localized corrosion when exposed to environments containing aggressive anions. Alloying of Al with specific elements (M: Cr, Mo, V, Nb, etc) using non-equilibrium processing techniques has been reported to result in significantly improved corrosion resistance due to the formation of a supersaturated solid solution and uniform distribution of M in the matrix. Several theories describing the corrosion behavior of Al–M alloys have been postulated. This paper presents an overview of the most common non-equilibrium alloying techniques implemented for the production of the metastable Al–M alloys and posited corrosion mechanisms for the improved corrosion resistance.
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Research context

OpenAlex topics: Corrosion Behavior and Inhibition · Aluminum Alloy Microstructure Properties · High-Temperature Coating Behaviors

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