Role of alloyed Nd in the microstructure and atmospheric corrosion of as-cast magnesium alloy AZ91

R. Arrabal; B. Mingo; A. Pardo; E. Matykina; M. Mohedano; M. C. Merino; A. Rivas; A. Maroto

doi:10.1016/j.corsci.2015.04.004

Role of alloyed Nd in the microstructure and atmospheric corrosion of as-cast magnesium alloy AZ91

R. Arrabal, B. Mingo, A. Pardo, E. Matykina, M. Mohedano, M. C. Merino, A. Rivas, A. Maroto

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

Abstract

The influence of Nd on the atmospheric corrosion performance of AZ91 alloy was evaluated as per PV1210 standard. Additionally, immersion and electrochemical measurements were carried out. The beneficial effect of Nd is associated with: (i) suppressed galvanic corrosion between α-Mg and secondary phases, (ii) refined β-phase morphology and (iii) increased proportion of carbonates in the outer surface layer. In case of atmospheric corrosion, the role of β-phase is the least important factor out of the three. The optimum Nd content is 0.5. wt.%. Further additions do not improve significantly the corrosion performance.

Original language	English
Pages (from-to)	38-48
Number of pages	11
Journal	Corrosion Science
Volume	97
DOIs	https://doi.org/10.1016/j.corsci.2015.04.004
Publication status	Published - 20 Apr 2015

Keywords

A. Alloy
A. Magnesium
B. AFM
C. Atmospheric corrosion

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10.1016/j.corsci.2015.04.004

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title = "Role of alloyed Nd in the microstructure and atmospheric corrosion of as-cast magnesium alloy AZ91",

abstract = "The influence of Nd on the atmospheric corrosion performance of AZ91 alloy was evaluated as per PV1210 standard. Additionally, immersion and electrochemical measurements were carried out. The beneficial effect of Nd is associated with: (i) suppressed galvanic corrosion between α-Mg and secondary phases, (ii) refined β-phase morphology and (iii) increased proportion of carbonates in the outer surface layer. In case of atmospheric corrosion, the role of β-phase is the least important factor out of the three. The optimum Nd content is 0.5. wt.%. Further additions do not improve significantly the corrosion performance.",

keywords = "A. Alloy, A. Magnesium, B. AFM, C. Atmospheric corrosion",

author = "R. Arrabal and B. Mingo and A. Pardo and E. Matykina and M. Mohedano and Merino, {M. C.} and A. Rivas and A. Maroto",

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T1 - Role of alloyed Nd in the microstructure and atmospheric corrosion of as-cast magnesium alloy AZ91

AU - Arrabal, R.

AU - Mingo, B.

AU - Pardo, A.

AU - Matykina, E.

AU - Mohedano, M.

AU - Merino, M. C.

AU - Rivas, A.

AU - Maroto, A.

PY - 2015/4/20

Y1 - 2015/4/20

N2 - The influence of Nd on the atmospheric corrosion performance of AZ91 alloy was evaluated as per PV1210 standard. Additionally, immersion and electrochemical measurements were carried out. The beneficial effect of Nd is associated with: (i) suppressed galvanic corrosion between α-Mg and secondary phases, (ii) refined β-phase morphology and (iii) increased proportion of carbonates in the outer surface layer. In case of atmospheric corrosion, the role of β-phase is the least important factor out of the three. The optimum Nd content is 0.5. wt.%. Further additions do not improve significantly the corrosion performance.

AB - The influence of Nd on the atmospheric corrosion performance of AZ91 alloy was evaluated as per PV1210 standard. Additionally, immersion and electrochemical measurements were carried out. The beneficial effect of Nd is associated with: (i) suppressed galvanic corrosion between α-Mg and secondary phases, (ii) refined β-phase morphology and (iii) increased proportion of carbonates in the outer surface layer. In case of atmospheric corrosion, the role of β-phase is the least important factor out of the three. The optimum Nd content is 0.5. wt.%. Further additions do not improve significantly the corrosion performance.

KW - A. Alloy

KW - A. Magnesium

KW - B. AFM

KW - C. Atmospheric corrosion

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DO - 10.1016/j.corsci.2015.04.004

M3 - Article

AN - SCOPUS:84930540915

VL - 97

SP - 38

EP - 48

JO - Corrosion Science

JF - Corrosion Science

SN - 0010-938X

ER -

Role of alloyed Nd in the microstructure and atmospheric corrosion of as-cast magnesium alloy AZ91

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Keywords

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