Abstract
Magnesium alloys have been increasingly used in the industries and biomaterial fields due to their low density, high specific strength and biodegradability. However, poor surface-related properties are major factors that limit their practical applications. This paper will begin with a brief review of conventional methods for anti-corrosion of Mg alloys, and demonstrate the feasibility of laser shock processing in achieving the enhanced corrosion resistance, especially for stress corrosion cracking.
Highlights
Metal corrosion has been considered as common phenomenon, ranging from daily life to wide industrial applications including metallurgy, chemical industry, energy industry, transportation, aeronautics, agriculture, marine engineering
The capability of corrosion resistance of Mg alloys depends on the surface passive film, Mg(OH)2, which determines the properties of the effect of corrosion control [17]
Laser shock processing (LSP) has been regarded as a useful method to improve mechanical properties of materials
Summary
Metal corrosion has been considered as common phenomenon, ranging from daily life to wide industrial applications including metallurgy, chemical industry, energy industry, transportation, aeronautics, agriculture, marine engineering. Magnesium is one of the lightest metallic element, and magnesium alloys have unique properties including high strength to weight ratio, low density, effective damping qualities, good absorbing electromagnetic radiation performance, as well as more than 80% recyclable rate. This makes it consistent with the concept of “21st Century Green Engineering Material” [2]. Mg is a highly active element, which is susceptible to becoming corroded within its working condition, especially when Mg alloy serving as structural materials are immersed in corrosive media and combined with stress [5,6,7].
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