Rare earth magnesium alloy containing antimony, and preparation method thereof

A rare-earth magnesium and magnesium alloy technology, applied in the field of magnesium alloys, can solve problems such as difficulty in meeting the tensile strength requirements of magnesium alloys, and achieve the effects of easy operation, simple process, and simple preparation methods

Inactive Publication Date: 2019-05-28
HENAN UNIV OF SCI & TECH
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The tensile strength of the creep-resistant rare earth magnesium alloy can reach 219MPa at 250°C, but it is still difficult to meet the demand for tensile strength of magnesium alloys at high temperatures

Method used

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  • Rare earth magnesium alloy containing antimony, and preparation method thereof

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preparation example Construction

[0024] In addition to the preparation method of the present invention, the antimony-containing rare earth magnesium alloy of the present invention can also be prepared by other methods in the prior art.

[0025] The preparation method of the antimony-containing rare-earth magnesium alloy of the present invention comprises the following steps: taking metal material raw materials according to the composition and content of the elements of the antimony-containing rare-earth magnesium alloy, melting to obtain a magnesium alloy melt, and then casting.

[0026] The preparation method of the antimony-containing rare earth magnesium alloy of the present invention further includes performing solid solution treatment and aging treatment sequentially on the cast material.

[0027] Both the melting and casting are carried out under protective atmosphere. The protective atmosphere is CO 2 and SF 6 mixed atmosphere.

Embodiment 1

[0031] The antimony-containing rare earth magnesium alloy of this embodiment is composed of the following components in mass percentage: 6.4% Sm, 1.8% Gd, 1.0% Zn, 0.8% Sb, and the balance is Mg. The total mass percentage of Sm and Gd is 8.2%.

Embodiment 2

[0033] The antimony-containing rare earth magnesium alloy of this embodiment is composed of the following components in mass percentage: 6.6% Sm, 1.6% Gd, 1.2% Zn, 0.6% Sb, and the balance is Mg. The total mass percentage of Sm and Gd is 8.2%.

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Abstract

The invention concretely relates to a rare earth magnesium alloy containing antimony, and a preparation method thereof, and belongs to the technical field of magnesium alloys. The rare earth magnesiumalloy containing the antimony is prepared from the following components in percentage by mass: 6.4 to 6.8 percent of Sm, 1.4 to 1.8 percent of Gd, 1.0 to 1.4 percent of Zn, 0.4 to 0.8 percent of Sb,and the balance Mg. The rare earth magnesium alloy containing the antimony provided by the invention has excellent indoor temperature and high-temperature strength performance, the tensile strength isup to 292MPa under the room temperature and is gradually reduced along with temperature rise, and the tensile strength is still higher than 200MPa at 300 DEG C. Compared with commercial heat-resistant high-strength magnesium alloy WE54, the rare earth magnesium alloy containing the antimony provided by the invention has a low rare earth content and a high strength performance, and has a wide application prospect in aerospace and automobile industries.

Description

technical field [0001] The invention specifically relates to an antimony-containing rare earth magnesium alloy and a preparation method thereof, belonging to the technical field of magnesium alloys. Background technique [0002] As the lightest metal structural material, magnesium alloys are increasingly used in aerospace and automotive industries. The use of magnesium alloys can reduce the weight of aerospace devices and automobiles and reduce energy consumption, which is of great significance to the aerospace and automotive industries. However, the strength of ordinary magnesium alloys drops significantly at high temperatures, and the heat resistance is not good, which seriously hinders its application in aerospace and automobile industries. Therefore, the development of new heat-resistant magnesium alloys is an important subject in the field of magnesium alloy technology. [0003] The heat resistance of magnesium alloys can be improved by proper alloying. Among them, r...

Claims

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Application Information

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Patent Type & AuthorityApplications(China)
IPC IPC(8): C22C1/03C22C23/06C22F1/06
Inventor张清李萍陈晓亚朱利敏李全安戚尧史浩鹏
OwnerHENAN UNIV OF SCI & TECH