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Development Of A Multiscale Internal State Variable Inelasticity-Corrosion Damage Model For Magnesium Alloys, Weiwei Song
Development Of A Multiscale Internal State Variable Inelasticity-Corrosion Damage Model For Magnesium Alloys, Weiwei Song
Theses and Dissertations
This dissertation proposes a multiscale Internal State Variable (ISV) inelasticity-corrosion damage model that is motivated by experimental microstructure-property relations of magnesium alloys. The corrosion damage framework was laid out based on observation of different corrosion mechanisms occurred on an extruded AM30 magnesium alloys. The extruded AM30 magnesium alloy was studied under two corrosion environments (cyclical salt spray and immersion) in order to observe the corrosion rates under different exposure environments. The coupons were examined at various times to determine the history effects of three corrosion mechanisms: (1) general corrosion; (2) pitting corrosion in terms of the nucleation rate, growth rate, …