Low corrosion resistance of magnesium alloys strongly limits their application range. This study aims at the investigation of
corrosion influence on microstructure and depending mechanical properties of newly developed magnesium alloy Mg-4Al-2Ba-2Ca. The fatigue properties of this creep-resistant magnesium alloy were investigated under three corrosive environments: double
distilled water, 0.01 and 0.1 mol L-1 NaCl solutions. Potentiodynamic polarization measurements and immersion tests were
performed to estimate the corrosion behaviour. Specimen surfaces were observed using light and scanning electron microscopy
for microstructure-related assessment of corrosion mechanisms. The corrosion fatigue behaviour was characterized in continuous
load increase tests using plastic strain and electrochemical measurements. Continuous load increase tests allow estimating the
fatigue limit and determining the failure stress amplitude with a single specimen. Fatigue results showed a significant decrease in
the estimated fatigue limit and determined failure stress amplitude with increasing corrosion impact of the environments. This
corrosion-structure-property relation was quantitatively described by means of model-based correlation approaches and failure
hypotheses. Plastic strain amplitude and deformation-induced changes in electrochemical measurands can be equivalently applied
for precise corrosion fatigue assessment.