Higher demand for light weight of components has been proposed in aviation, aerospace, automobile,3C electronic products and other areas on the background of respecting environmental conservation, reducing energy consumption and creating a green earth. Mg-Li alloy is considered as the lightest metal structure material. But the strength and toughness of the Mg-Li alloy are not as high as Al alloy, which greatly limits the application of Mg-Li alloy. Therefore, taking various measures to improve the strength ...