Nanometer quasi-eutectic enhanced Mg-Zn-Y alloy preparation method

An alloy and quasicrystal technology, applied in the field of magnesium alloy manufacturing, can solve problems such as less research, and achieve the effect of enhancing plastic workability and significant benefits
CN107760950AActive Publication Date: 2018-03-06SOUTHWEST JIAOTONG UNIV
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
SOUTHWEST JIAOTONG UNIV
Publication Date
2018-03-06

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Abstract

The invention discloses a nanometer quasi-eutectic enhanced Mg-Zn-Y alloy preparation method, which comprises the following steps: A, preparing a cast Mg-Zn-Y alloy according to set atom percentage proportions of each component, i.e., 0.5 to 3 percent of Zn, 0.08 to 0.6 percent of Y and the balance of Mg, the atom percentage ratio of Zn and Y being (5-7):1; B, annealing the cast Mg-Zn-Y alloy for8 to 20h at 380 to 420 DEG C, and performing furnace cooling; C, preserving head of the annealed cast Mg-Zn-Y alloy for 2 to 4h at 300 to 400 DEG C, and performing hot extrusion treatment; D, heatingthe Mg-Zn-Y alloy subjected to hot extrusion processing in step C to 550 to 600 DEG C in a heat treatment furnace along with the furnace, preserving the heat for 5 to 20min, and then performing quenching treatment, so as to obtain a nanometer quasi-eutectic enhanced Mg-Zn-Y alloy. According to the preparation method, an (alpha-Mg+I-phase) quasi-eutectic enhanced Mg-Zn-Y alloy with a lamellar spacing of smaller than 50nm can be obtained.
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Description

technical field

[0001] The invention relates to a preparation method of a nano-eutectic crystal reinforced Mg-Zn-Y alloy, which belongs to the field of magnesium alloy manufacture. Background technique

[0002] As the lightest metal structural material, magnesium alloy has the advantages of high specific strength, good noise reduction and vibration reduction, good electromagnetic shielding, and easy recycling. It is used in transportation vehicles, aerospace, electronic communications, national defense technology and other fields. It has a very broad application prospect. Especially with the increasing requirements for the lightweight, energy saving, environmental protection and ecological environment of transportation equipment, the application of magnesium alloys in the field of transportation equipment has attracted more and more attention. However, magnesium alloys have their own shortcomings, such as low strength and poor toughness, which limit the wide application of ...

Claims

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