Effects of Grain Size on the Corrosion Resistance of Wrought Magnesium Alloys Containing Neodymium

Abstract

A range of grain size from 70μm to 0.7μm was studied for corrosion resistance of Mg-Y-RE magnesium alloy using electrochemical and constant immersion testing in 3.5wt.% NaCl solution. the linear polarization resistance (R p) showed a clear trend of increasing R p value with grain refinement. the ultrafine grained sample showed the most positive pitting potential as compared to coarse grained samples. One order of magnitude decrease in corrosion rate was observed between coarsest and ultrafine grained microstructure. © 2012 Elsevier Ltd.

Department(s)

Materials Science and Engineering

Keywords and Phrases

A. Magnesium; B. SEM; B. Weight loss; C. Intergranular corrosion

International Standard Serial Number (ISSN)

0010-938X

Document Type

Article - Journal

Document Version

Citation

File Type

text

Language(s)

English

Rights

© 2024 Elsevier, All rights reserved.

Publication Date

01 May 2012

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