Research progress on corrosion behavior of magnesium-lithium alloys

Abstract

Research progress on corrosion behavior (localized corrosion, corrosion type and corrosion products) and the effects of processing methods and alloying on the corrosion resistance of hexagonal close packed (HCP) singular phase, body cubic centered (BCC) singular phase and (HCP+BCC) duplex structured Mg-Li alloys were summarized. The future research directions about how to improve the corrosion resistance of Mg-Li alloys were pointed out and the research on corrosion behavior of Mg-Li alloys should focus on the structure, main components and evolution of surface product layers. Meanwhile, it is necessary to consider the effect of alloying elements on the protective effect of surface film layers, and to study the influence of the crystallographic texture of Mg-Li alloys due to the severe plastic deformation on their corrosion behavior.

Keywords

• magnesium-lithium alloys
• crystallographic structure
• corrosion behavior
• corrosion product film
• corrosion mechanism