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Rare earth magnesium alloy superplastic material
Release time: 2024-05-22
The plastic deformation ability of magnesium alloy is poor, which limits its wide application and large-scale industrial production, and the addition of rare earth elements does not significantly improve its plastic deformation ability. The superplastic forming provides the possibility to solve this problem, and the second phase of rare earth magnesium alloy has good thermal stability and improves the superplastic forming ability, so it is very important to study the superplastic deformation theory and deformation coordination mechanism of rare earth magnesium alloy, as well as the factors affecting the superplasticity of rare earth magnesium alloy.
Magnesium alloys have broad application prospects in aerospace, 3C and automotive industries due to the advantages of low density, high specific strength and specific stiffness, and good electromagnetic shielding performance. In recent years, the introduction of rare earth elements to strengthen the magnesium alloy, the room temperature and high temperature strength has been improved, and the application range of magnesium alloy has been expanded. However, due to the small number of sliding systems, the plastic deformation ability of magnesium alloy is poor. Even after the addition of rare earth elements, this problem has not been significantly improved, limiting the application of magnesium alloy parts in the forming process. However, the superplastic forming technology of magnesium alloy makes it possible to obtain complex workpieces by plastic deformation, and can reduce the material consumption compared with mechanical forming.
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