Electrochemical behavior of magnesium alloys strained in buffer solutions

G. Ben-Hamu; A. Eliezer; E. M. Gutman

doi:10.1016/j.electacta.2006.05.009

Electrochemical behavior of magnesium alloys strained in buffer solutions

G. Ben-Hamu, A. Eliezer, E. M. Gutman

Department of Materials Engineering

Research output: Contribution to journal › Article › peer-review

23 Scopus citations

Abstract

The mechano-chemical effect in a group of five die cast and extruded magnesium alloys has been investigated. Corrosion rates were determined as a function of both the processing conditions, used to produce the alloys, and the applied tensile strain by means of potentiodynamic polarisation measurements and immersion tests. These were conducted at 25 °C in several borate buffer solutions containing NaCl, Mg(OH)₂ or NaOH. In order to understand the reason for the advantages of AM50 Alloy under stress corrosion, TEM analysis were performed. This analysis revealed the location of dislocation pile-ups at a further stage in the stressed AM50 alloy which were found to be beneficial to it is resistance to stress-corrosion cracking. It is shown that the mechano-chemical effect is strongly dependent on the aluminium content in the alloy.

Original language	English
Pages (from-to)	304-313
Number of pages	10
Journal	Electrochimica Acta
Volume	52
Issue number	1
DOIs	https://doi.org/10.1016/j.electacta.2006.05.009
State	Published - 5 Oct 2006

Keywords

Die cast and extruded
Electrochemical tests
Magnesium alloys
Mechano-chemical effect

ASJC Scopus subject areas

General Chemical Engineering
Electrochemistry

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10.1016/j.electacta.2006.05.009

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abstract = "The mechano-chemical effect in a group of five die cast and extruded magnesium alloys has been investigated. Corrosion rates were determined as a function of both the processing conditions, used to produce the alloys, and the applied tensile strain by means of potentiodynamic polarisation measurements and immersion tests. These were conducted at 25 °C in several borate buffer solutions containing NaCl, Mg(OH)2 or NaOH. In order to understand the reason for the advantages of AM50 Alloy under stress corrosion, TEM analysis were performed. This analysis revealed the location of dislocation pile-ups at a further stage in the stressed AM50 alloy which were found to be beneficial to it is resistance to stress-corrosion cracking. It is shown that the mechano-chemical effect is strongly dependent on the aluminium content in the alloy.",

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AU - Ben-Hamu, G.

AU - Eliezer, A.

AU - Gutman, E. M.

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N2 - The mechano-chemical effect in a group of five die cast and extruded magnesium alloys has been investigated. Corrosion rates were determined as a function of both the processing conditions, used to produce the alloys, and the applied tensile strain by means of potentiodynamic polarisation measurements and immersion tests. These were conducted at 25 °C in several borate buffer solutions containing NaCl, Mg(OH)2 or NaOH. In order to understand the reason for the advantages of AM50 Alloy under stress corrosion, TEM analysis were performed. This analysis revealed the location of dislocation pile-ups at a further stage in the stressed AM50 alloy which were found to be beneficial to it is resistance to stress-corrosion cracking. It is shown that the mechano-chemical effect is strongly dependent on the aluminium content in the alloy.

AB - The mechano-chemical effect in a group of five die cast and extruded magnesium alloys has been investigated. Corrosion rates were determined as a function of both the processing conditions, used to produce the alloys, and the applied tensile strain by means of potentiodynamic polarisation measurements and immersion tests. These were conducted at 25 °C in several borate buffer solutions containing NaCl, Mg(OH)2 or NaOH. In order to understand the reason for the advantages of AM50 Alloy under stress corrosion, TEM analysis were performed. This analysis revealed the location of dislocation pile-ups at a further stage in the stressed AM50 alloy which were found to be beneficial to it is resistance to stress-corrosion cracking. It is shown that the mechano-chemical effect is strongly dependent on the aluminium content in the alloy.

KW - Die cast and extruded

KW - Electrochemical tests

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Electrochemical behavior of magnesium alloys strained in buffer solutions

Abstract

Keywords

ASJC Scopus subject areas

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