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High-strength and high-ductility Mg-Zn-Ca/Fe particle composite material

A composite material and high plasticity technology, applied in the field of high-strength and high-plasticity multi-element magnesium alloy and its manufacturing, can solve the problems of alloy strength not meeting the application requirements of engineering structural materials, unexplained Fe existence form, and limitation of alloy casting performance. , to achieve the effects of easy control of melting temperature and time, low cost and good operability

Inactive Publication Date: 2014-07-16
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The patented alloy mainly involves a multi-element magnesium alloy in the biomedical field, rather than an alloy in the field of engineering application. The strength of this alloy cannot meet the application requirements of some engineering structural materials.
At the same time, due to the low content of alloying elements, the alloy is still in the category of wrought magnesium alloys, which limits the casting performance of the alloy
Moreover, the content of Fe in the alloy is low, and it does not interact with the matrix to form a composite material, and the form of Fe is not specified

Method used

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  • High-strength and high-ductility Mg-Zn-Ca/Fe particle composite material
  • High-strength and high-ductility Mg-Zn-Ca/Fe particle composite material

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Embodiment 1

[0021] A high-strength and high-plasticity Mg-Zn-Ca / Fe particle composite material, its weight percent Mg is 46.8%, Zn is 37.2%, Ca is 3.6%, and Fe is 12.4%. The raw materials are industrial pure magnesium with a purity greater than 99.9%, high-purity zinc with a purity greater than 99.995%, Mg-Ca master alloy (Mg-33.17.wt%Ca), and industrial reduced Fe powder. First, pure magnesium, pure zinc, and Mg-Ca intermediate alloy are melted under the protection of argon, kept at 850°C and stirred by electromagnetic induction to fully melt the raw materials. After the alloy is completely melted, continue induction stirring for 5 minutes to obtain a uniform Mg-Zn-Ca Alloy liquid; then add Fe powder under the protection of argon, while still keeping warm at 850°C and stirring by electromagnetic induction for 5 minutes, then water cooling to obtain a uniformly mixed Fe particle composite material, and finally obtain a composite material alloy ingot.

[0022] The mechanical properties of ...

Embodiment 2

[0024] A high-strength and high-plasticity Mg-Zn-Ca / Fe particle composite material, its weight percent Mg is 41.7%, Zn is 35.1%, Ca is 2.4%, and Fe is 20.8%. The raw materials are industrial pure magnesium with a purity greater than 99.9%, high-purity zinc with a purity greater than 99.995%, Mg-Ca master alloy (Mg-33.17.wt%Ca), and industrial reduced Fe powder. First, pure magnesium, pure zinc, and Mg-Ca intermediate alloys are smelted under the protection of argon, kept at 850°C and stirred by electromagnetic induction to fully melt the raw materials. After the alloy is completely melted, continue induction stirring for 5 minutes to obtain a uniform Mg-Zn-Ca Alloy liquid; then add Fe powder under the protection of argon, while still keeping warm at 850°C and stirring by electromagnetic induction for 5 minutes, then water cooling to obtain a uniformly mixed Fe particle composite material, and finally obtain a composite material alloy ingot.

[0025] The mechanical properties o...

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Abstract

The invention relates to a high-strength and high-plasticity Mg-Zn-Ca / Fe particle composite material, which comprises the following alloying element components Zn=35%-38% and Ca=2%-4% distributed in the alloy , Fe=12%~21%, the balance is Mg and unavoidable impurities; among them, Fe exists in the form of free Fe particles. Its production process is as follows: first melt the Mg-Zn-Ca alloy liquid, then add Fe particles into the alloy liquid for induction heating, and finally obtain a Mg-Zn-Ca / Fe particle composite material with uniform composition. The composite material of the invention has the characteristics of high strength and high plasticity, and at the same time retains the characteristics of excellent casting performance of the original eutectic composition, so that the alloy has broad application prospects.

Description

technical field [0001] The invention relates to a high-strength and high-plasticity multi-component magnesium alloy containing iron particles and a manufacturing method thereof, in particular to a high-strength and high-plasticity Mg-Zn-Ca / Fe particle composite material. Background technique [0002] The elastic modulus of magnesium is relatively small, and it can produce large deformation under the action of force. Therefore, under the action of impact load, magnesium alloy can absorb large impact energy and can manufacture impact-resistant parts. Magnesium and its alloys, as the lightest commonly used metal structural materials, have attracted more and more attention, and have been applied to a certain extent in the fields of national defense, aerospace, high-speed rail transportation, and electronic communications. The Zn alloy has excellent atmospheric corrosion resistance, and it is easy to form a protective film on the surface at room temperature. It is mainly used for...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/06C22C23/04C22C1/02
Inventor 王敬丰黄崧魏怡芸潘复生
Owner CHONGQING UNIV