Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7895564 | Corrosion Science | 2015 | 14 Pages |
Abstract
The corrosion behaviour of a Mg-2.65Â wt.%Zn alloy after tensile and compressive deformation has been investigated using dynamic polarization and immersion tests. The microstructure has been characterized using X-ray diffraction spectroscopy and transmission electron microscopy. Tensile and compressive deformation introduces high density dislocations and deformation twins to the alloy and accelerates the corrosion rate. This is ascribed to the enhanced stress corrosion associated with dislocations and deformation twins. In particular, we find that tensile deformation triggers a different intergranular corrosion mechanism in contrast to compressive deformation. The relationship between the corrosion behaviour and microstructure has been discussed.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Yang Zheng, Yan Li, Jihua Chen, Zhengyang Zou,