High-strength high-elastic-modulus deformed magnesium alloy and preparation method thereof

Abstract

The invention relates to a high-strength high-elastic-modulus deformed magnesium alloy and a preparation method thereof. The high-strength high-elastic-modulus deformed magnesium alloy consists of thefollowing elements in percentage by mass: 6.5-15.0% of Zn, 0.3-0.5% of Zr, 0.1-0.5% of Sr, 0.01-0.1% of Sc, and the balance of magnesium, wherein a magnesium alloy is a hypoeutectic alloy, and an eutectic phase in the alloy is in interrupted distribution. Raw materials are smelted, atomized, subjected to hot-press sintering, extrusion forming and ageing treatment to obtain the magnesium alloy. Elastic modulus is 57-67GPa.

Description

technical field [0001] The invention belongs to the technical field of metal material preparation, and in particular relates to a deformed magnesium alloy with high strength and high elastic modulus and a preparation method thereof. Background technique [0002] The information disclosed in this background section is only intended to increase the understanding of the general background of the present invention, and is not necessarily taken as an acknowledgment or any form of suggestion that the information constitutes the prior art already known to those skilled in the art. [0003] As the lightest metal structural material in practical application at present, magnesium alloy has the advantages of light weight, shock absorption, good electromagnetic shielding performance, good machinability, etc., and has important application value and Wide application prospects, known as "the most potential and promising green engineering materials in the 21st century". [0004] According...

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Problems solved by technology

[0005] However, the development and application of wrought magnesium alloys still have the following problems: (1) magnesium alloys have a typical hexagonal close-packed structure, and their deformation ability is poor; (2) compared with wrought aluminum alloys or steel materials, the elastic modulus of wrought magnesium alloys The strength and toughness still need to be further improved; (3) some high-strength deformed magnesium alloys contain a large amount of rare earth elements (such as Mg-Gd-Y series), which are high in cost and difficult to adapt to large-scale industrial applications

The alloy of the invention contains rare earth elements, and the preparation process requires multiple melt treatments, deformation treatments and heat treatments, and the preparation process is relatively cumbersome, resulting in high cost

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