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Magnesium-lithium alloy
LZ91, LA141, MA21/MA18, LAZ931/LAZ933
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Mg-Li alloy
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Magnesium-lithium alloy
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Characteristics and Applications of Magnesium–Lithium Alloys
1. The world’s lightest metallic structural material: magnesium–lithium alloy has a density of 0.95–1.65 g/cm³. 3 Compared with aluminum alloys, it can reduce weight by more than 45%; compared with magnesium alloys, it can reduce weight by more than 15%.
2. Superplasticity: Magnesium–lithium alloys exhibit a high-temperature tensile elongation of ≥200%; superplastic forming enables the production of thin-walled components with precise dimensions, complex geometries, and a uniform, fine-grained microstructure.
3. Excellent cold and hot formability: After forming using conventional plastic deformation processes, the yield rate of the finished product surpasses that of aluminum and magnesium alloys, with a cold-rolling yield rate exceeding 90%.
4. Excellent vibration-damping performance: Its damping coefficient is 3–5 times that of aluminum alloy, making it well suited for applications requiring vibration isolation, such as aerospace vibration‑damping components and tank armor.
5. Excellent electromagnetic shielding performance: Magnesium–lithium alloy is a non-magnetic metallic material that provides effective shielding across various electromagnetic frequency bands, making it well suited for applications such as gyroscope housings, shielded cabins, and anti-interference control cabinet enclosures, thereby enhancing the safety and accuracy of equipment.
6. Excellent weldability: Magnesium–lithium alloys can be readily fusion-welded to the base alloy and to other magnesium alloys, and welding can be performed using techniques such as laser welding, friction stir welding, TIG welding, electron-beam welding, and brazing.
7. Excellent radiation resistance: Experimental results demonstrate that magnesium–lithium alloys exhibit superior radiation resistance compared to pure magnesium alloys; in high-energy electron irradiation tests, the radiation resistance of magnesium–lithium alloys is comparable to that of aluminum alloys.
Product Usage
Magnesium–lithium alloys such as LA43M, LZ91, LA103M, LA103Z, and LA141 exhibit excellent vibration‑damping, energy‑absorbing, and ductile properties, making them among the most effective lightweight materials in aerospace applications. They can be used in a wide range of enclosures, housings, and certain load‑bearing and functional components, including electronic equipment casings, structural parts for optical instruments, skin panels, instrument panels, satellite rivets, honeycomb panels, heat pipes, laptop and mobile phone housings, sighting devices, and various other structural elements.
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