High-yield processing method of ultra-fine crystal magnesium alloy thin plate

A processing method and magnesium alloy technology, applied in metal rolling and other directions, can solve the problems of uneven microstructure and small processing strain of ultra-fine-grained magnesium alloys, achieve reduced edge cracks, good strength and plasticity, and reduce energy consumption and cost effects
CN102989764BInactive Publication Date: 2015-01-14HOHAI UNIV
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
HOHAI UNIV
Publication Date
2015-01-14
Estimated Expiration
Not applicable · inactive patent

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Abstract

The invention relates to a high-yield integrated processing technology of an ultra-fine crystal magnesium alloy thin plate, and belongs to the technical field of plastic working of magnesium alloys. A high-yield processing method comprises the following steps of: firstly, carrying out equal channel angular pressing for a plurality of times; putting a magnesium alloy billet into a preheated die to carry out heat preservation, and then carrying out equal channel angular pressing on the billet for more than eight times, so as to obtain an ultra-fine crystal magnesium alloy block; and secondly, subsequently milling and processing, rolling the ultra-fine crystal magnesium alloy block obtained in the first step for a plurality of times, so as to prepare a magnesium alloy thin plate, wherein the rolling temperature range is 100-350 DEG C. The magnesium alloy micro-structure is refined by equal channel angular pressing to improve the plastic deformation ability, and then processed into the magnesium alloy thin plate and a wide plate by a continuous rolling technology. Therefore, the produced magnesium alloy thin plate is an ultrafine-grained microstructure, even in structure, good in strength and plasticity, and high in yield.
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Description

technical field

[0001] The invention relates to a high-yield integrated processing technology for ultrafine-grained magnesium alloy thin plates. The invention belongs to the technical field of magnesium alloy plastic processing. Background technique

[0002] Magnesium alloy is currently the lightest metal structural material in industrial applications. It has high specific strength and specific stiffness. It has extremely important application value and broad application prospects in the fields of automobiles, electronics, and aerospace. Since magnesium has a close-packed hexagonal structure, there is only a basal slip system at room temperature, and the plastic deformation ability is poor, forming is difficult, and the yield is low. At present, the application of magnesium alloys is mainly in die casting, die casting and semi-solid forming products, and deformed magnesium alloys are only used in high-end frontier fields such as aerospace, electronics and military. Compare...

Claims

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