The influence of oxide layer thickness on the microstructure and mechanical properties of the weld of Mg Li alloy by friction stir welding

Key Points

• Oxide layer thickness significantly affects the microstructure of Mg Li alloy welds, influencing their mechanical properties.
• An increase in oxide layer thickness correlates with decreased joint strength, as demonstrated by a notable reduction in tensile properties.
• Friction stir welding was utilized to examine the relationship between oxide thickness and properties by creating a series of welded samples.
• Optimizing the oxide layer thickness may enhance the overall performance and durability of welded Mg Li alloy applications.