A kind of preparation method of high plasticity heat deformation rare earth magnesium alloy

A technology of hot deformation and rare earth magnesium, applied in the field of magnesium alloys, can solve the problems of increasing recrystallized structure, possessing strength, difficult to achieve high plasticity, etc., and achieve the effect of weakening the basal texture, improving strength and plasticity, and reducing casting defects
CN112746209BActive Publication Date: 2021-10-22TAIYUAN UNIV OF TECH
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
TAIYUAN UNIV OF TECH
Publication Date
2021-10-22

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Abstract

The invention discloses a preparation method of a high-plastic hot-deformation rare-earth magnesium alloy, which relates to the technical field of magnesium alloys and solves the technical problem that it is difficult to simultaneously realize high strength and high plasticity of existing magnesium alloy materials. The magnesium alloy material of the present invention can improve the plasticity while ensuring the strength of the magnesium alloy, refine the dynamic recrystallization grain size through multidirectional forging and extrusion deformation, and increase the recrystallization rate at the same time, making up for the low strength and extrusion of multidirectional forging alloys. The low elongation rate of the as-state alloy has two shortcomings, and the strength and elongation rate are improved simultaneously, so that the elongation rate of the alloy can reach more than 30% under the premise of the strength of the alloy at 300MPa level.
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Description

technical field

[0001] The invention belongs to the technical field of magnesium alloys, and in particular relates to a preparation method of a high-plasticity hot-deformation rare-earth magnesium alloy. Background technique

[0002] Magnesium alloys have the characteristics of low density, high specific strength and specific stiffness, and have obvious advantages in the application of modern metal lightweight, but poor plasticity and deformation ability restrict the wide application of magnesium alloys. On this basis, hot extrusion deformation treatment of magnesium alloy materials can eliminate casting defects and refine grains to improve the performance of magnesium alloys. However, although the metal after hot extrusion deformation has excellent strength, its plasticity is still at a low level. After the multi-directional forging treatment of magnesium alloy, the grain refinement can also be achieved, and the texture can be weakened at the same time, which can significa...

Claims

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