A kind of high ductility magnesium alloy and preparation method thereof

A magnesium alloy, high plasticity technology, applied in the field of metal materials, can solve the problems of patents and few applications, and achieve the effect of improving strength and toughness, improving plasticity, and simple process
CN106676357BActive Publication Date: 2018-05-04CHONGQING UNIV
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Patent Information

Authority / Receiving Office
CN ยท China
Patent Type
Patents(China)
Current Assignee / Owner
CHONGQING UNIV
Publication Date
2018-05-04

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Abstract

The invention discloses a high-plasticity magnesium alloy and a preparation method thereof. The magnesium alloy comprises the following components in percentage by mass: 3-4% of Zn, 0.1-0.6% of Ca, 0.05-0.8% of Mn, and the balance of Mg and inevitable impurities. Ca and Mn are added in a magnesium zinc alloy to prominently refine alloy grains; in hot extrusion process, the dynamic recrystallization can be promoted to stop growth of recrystallized grains, so that the strength and the plasticity of the alloy are synchronously improved, the base surface texture of the alloy can be prominently weakened, and the plasticity of the alloy is improved; in addition, through separation of a second phase and dispersion and separation of nanoscale Mn particles, the strength of the alloy can be effectively improved; the magnesium alloy is high in plasticity; and the component-optimized alloy can reach the ductility of 25-29.8%, the yield strength of 160-205 MPa and the tensile strength of 270-289 MPa.
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Description

technical field

[0001] The invention relates to the field of metal materials, in particular to a high-plasticity Mg-Zn-Ca-Mn magnesium alloy and a preparation method thereof. Background technique

[0002] Magnesium alloy has many advantages such as low density, high specific strength, high specific stiffness, good casting performance, good shock absorption, high electromagnetic shielding performance, easy cutting and recyclability, and is currently the lightest metal structural material in industrial applications. It has extremely important application value and broad application prospects in the fields of automobile, electronics, electrical appliances, transportation, aerospace and national defense, and military industry. Especially in terms of light weight, it has significant advantages that are difficult to replace, and can significantly reduce weight and save fuel consumption. However, the crystal structure of magnesium is hexagonal close-packed, with few slip systems, ...

Claims

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