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On the 21st from the Shaanxi Provincial Magnesium-Lithium Alloy Engineering Research Center, the center developed a new type of magnesium-lithium alloy material with a density of 0.96 to 1.64 grams per cubic centimeter depending on the application. It is currently the lightest metal structure in the world. material. On December 22, 2016, almost all of the high-resolution micro-nano satellites in China’s first global carbon dioxide monitoring scientific experiment satellite (hereinafter referred to as “carbon satelliteâ€) successfully launched this kind of self-developed ultra-light material.
Magnesium-lithium alloy material is the material with the lowest density in metal structure materials at present. By adding lithium element in magnesium metal, magnesium-lithium alloy has features such as ultra-light, high-strength, shock absorption and so on. The new magnesium-lithium alloy developed by the Shaanxi Province Magnesium-Lithium Alloy Engineering Research Center has the same size and weight as the aluminum alloy, and the weight is only half that of the aluminum alloy, but the specific strength is higher than that of the aluminum alloy. In addition, this new type of magnesium-lithium alloy has excellent damping performance, which is more than ten times that of aluminum alloys. It has a good shock absorption and noise reduction effect, and it has outstanding performance in shielding electromagnetic interference. The low-density, high specific stiffness, and high specific strength mechanical properties of magnesium-lithium alloys have laid a solid foundation for the successful launch of the "carbon satellite." The material significantly reduced the weight of the satellite, significantly increased the payload, and reduced launch costs. In September 2015, this material was used for the first time on China’s Pujiang-1 satellite and launched successfully.
It is reported that after many years of research, the magnesium and lithium alloy engineering research center of Shaanxi Province has developed three models of ultra-light magnesium-lithium alloys with independent intellectual property rights, drafted China's first national standard for magnesium-lithium alloy materials, and actively promoted The new type of magnesium-lithium alloy has gone from scientific research to large-scale production, laying a solid foundation for the extensive application of magnesium-lithium alloys in China's aerospace and aviation fields. (Reporters Zhang Zhehao, Yang Yonglin)
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