The influence Cl^- on stress corrosion of 7xxx series aluminium alloys studied by experimental and simulation technology.

ABSTRACT: The stress corrosion behavior of 7xxx series aluminium alloys in different concentrations NaCl solution was studied, and numerical simulation was conducted in COMSOL Multiphysics based on experimental results. Different stresses were applied on the experiment pieces, the pitting crater deepened with the change of stress level. The corrosion rate increased with the raising stress. There is no positive correlation between stress corrosion degree and chloride ion concentration. The most severe corrosion occurs in 5.0 wt% NaCl solution instead of 6.0 wt% NaCl solution due to the increase of water film conductivity and decrease of solubility of oxygen under high Cl^- environment. The finite element model was used to analyze the stress distribution on aluminium alloy surface, to

SUBMITTER: Yang X 

PROVIDER: S-EPMC11259798 | biostudies-literature | 2024 Jul

REPOSITORIES: biostudies-literature