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ZK60 magnesium alloy heat treatment process and performance study thereof,

A magnesium alloy and process technology, which is applied in the field of ZK60 magnesium alloy heat treatment process and its performance research, can solve the problems of lack of research on new high-strength deformed magnesium alloy ZK60 heat treatment process, and achieve the effect of improving plasticity and widening the application field.

Inactive Publication Date: 2018-12-18
安徽恒利增材制造科技有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] According to the deficiencies in the prior art above, the technical problem to be solved in the present invention is to propose a ZK60 magnesium alloy heat treatment process and its performance research, and to study the formation of the ZK60 magnesium alloy phase by adopting a combination of solid solution treatment and aging treatment and transformation law, which solves the shortcomings of the lack of research on the heat treatment process of the new high-strength deformed magnesium alloy ZK60 in the prior art

Method used

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  • ZK60 magnesium alloy heat treatment process and performance study thereof,
  • ZK60 magnesium alloy heat treatment process and performance study thereof,
  • ZK60 magnesium alloy heat treatment process and performance study thereof,

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0040] 1) Determination of heat treatment process parameters:

[0041]From the research results of the as-cast microstructure of ZK60 magnesium alloy, it can be seen that there are a large number of eutectic structures in the grain boundaries and dendrite boundaries, and the Zn-rich phase is the main one. It can be speculated that the segregation of Zn element at the grain boundary will inevitably reduce its solid solubility in the matrix, thereby affecting the performance of the material. At the same time, ZK60 magnesium alloy is also an alloy material that can be strengthened by heat treatment. For this reason, solid solution and aging treatment under various conditions were carried out in experiments to study the changes in mechanical properties and precipitated phases of alloys under various heat treatment processes, so as to select the best heat treatment plan and obtain the best service structure and mechanical properties. performance. figure 1 is the phase diagram of ...

Embodiment 2

[0047] The mass fractions (%) of the main elements of the ZK60 magnesium alloy in the examples are shown in Table 1.

[0048] Table 1 Mass fraction of main elements in ZK60 magnesium alloy (%)

[0049] element

Zn

Zr

Impurities

Mg

quality score

4.8-6.2

>0.45

<0.30

margin

[0050] Other impurity elements such as Fe, Ni, Cu, and Co have a very small solid solubility in magnesium, and when the mass fraction of the concentration is less than 0.2%, it will have a very harmful effect on the corrosion resistance of Mg, and serious damage will occur. Galvanic corrosion accelerates the corrosion of Mg. Ni often forms Mg with magnesium 2 Intermetallic compounds such as Ni are distributed in the grain boundary in the form of a network, which reduces the corrosion resistance of magnesium. When the Ni content is greater than 0.016%, the corrosion rate of the magnesium alloy is significantly accelerated. Fe is insoluble in solid magnesium,...

Embodiment 3

[0060] Performance Testing:

[0061] 1. Microhardness analysis, the test force (load) is 9.8N, and the holding time is 15s;

[0062] 2. Metallographic analysis: metallographic observation of the metallographic structure of the alloy under various heat treatment states, the uniformity of the as-cast structure, the shape, size, quantity and distribution of the precipitated phase of the material after heat treatment, so as to qualitatively explain Material properties.

[0063] 3. X-Ray diffraction analysis: scanning angle: 30°~80°; scanning speed: 5° / min; target material: Cu target; accelerating voltage: 40KV; filament current: 200mA; graphite monochromator filter.

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Abstract

The invention discloses a ZK60 magnesium alloy heat treatment process and a performance study thereof, and belongs to the field of magnesium alloy machining. The ZK60 magnesium alloy heat treatment process studies the heat treatment process of a high-strength deformed magnesium alloy ZK60 and the influence of the heat treatment process on the structure and performance of the alloy from a heat treatment method combining solid solution treatment with aging treatment. The optimal solid solution treatment process of the ZK60 magnesium alloy is that thermal insulation is performed at 500 DEG C for3 hours, and the optimal aging treatment process is that thermal insulation is performed at 180 DEG C for 12 hours. The ZK60 magnesium alloy heat treatment process has the advantages that the development of the magnesium alloy gets rid of the current situation that a cast magnesium alloy is the main component for a long time, the application of the deformed magnesium alloy in industrial products is increased, the industrialization process of the magnesium alloy is promoted, and the rapid development of the whole deformed magnesium alloy field is promoted.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy heat treatment, and in particular relates to a ZK60 magnesium alloy heat treatment process and performance research thereof. Background technique [0002] Magnesium alloy is the lightest metal structural material in practical application. Compared with other metal structural materials, magnesium alloy has low density, high specific strength and specific stiffness, strong shock absorption, electromagnetic shielding and radiation resistance, and easy cutting. , easy to recycle and other advantages, it has broad application prospects in the fields of automobiles, electronics, electrical appliances, transportation, aerospace, aviation and national defense military, etc. It is known as the "green engineering material" of the 21st century and has become an important commercial Lightweight construction material. [0003] ZK60 belongs to high-strength wrought magnesium alloy, which is a kind of M...

Claims

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Application Information

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IPC IPC(8): C22F1/06C22C23/04
CPCC22C23/04C22F1/06
Inventor 夏建强常峰张国伟
Owner 安徽恒利增材制造科技有限公司
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