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Preparation of foam magnesium alloy

A technology of foamed magnesium alloy and magnesium alloy, which is applied in the field of alloy manufacturing, can solve the problems of poor comprehensive performance of porous foamed magnesium alloy, low porosity of foamed magnesium alloy, and irregular shape of pores, etc., so as to improve flexibility and diversity properties, uniform pore distribution, and regular pore shape

Inactive Publication Date: 2009-06-24
HEBEI UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0017] The technical problem to be solved by the present invention is to provide a method for preparing foamed magnesium alloys, which is a method for preparing foamed magnesium alloys by foaming powder entities. This method overcomes the complex process and long cycle of the existing foamed magnesium alloy preparation methods , low yield, high cost and easy residual impurities; overcome the shortcomings of low porosity, uneven distribution of pore structure and irregular pore shape and through-pore structure of the prepared foamed magnesium alloy; overcome the shortcomings of the prepared foamed magnesium alloy The shortcoming of poor overall performance of the obtained porous foamed magnesium alloy

Method used

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  • Preparation of foam magnesium alloy
  • Preparation of foam magnesium alloy

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Effect test

Embodiment 1

[0040] The first step, cold pressing + hot pressing to prepare magnesium alloy foam prefabricated block

[0041] First, 200 mesh pure magnesium powder and 400 mesh pure aluminum powder are mixed in a mass ratio of 4:1 to form a metal powder mixture, and then 325 mesh TiH that accounts for 1.0% of the metal powder mixture mass percentage 2 The powder foaming agent is added to the metal powder mixture, and the three are fully mixed by a ball mill, and the uniformly mixed composite powder is put into a mold, and then cold-pressed with a hydraulic press at a pressure of 250 MPa at room temperature to keep The pressing time is 30s, and the cold-pressed prefabricated block is taken out, and then the cold-pressed prefabricated block is hot-pressed under the conditions of a hot-pressing temperature of 380°C, a pressure of 180MPa, and a holding time of 30s. , making a magnesium alloy foam prefabricated block;

[0042] The second step is to prepare foamed magnesium alloy

[0043] Put ...

Embodiment 2

[0046] The first step, cold pressing + hot pressing to prepare magnesium alloy foam prefabricated block

[0047] First, 150-mesh pure magnesium powder and 325-mesh pure aluminum powder are mixed in a mass ratio of 4:1 to form a metal powder mixture, and then 200-mesh TiH 2 The powdered foaming agent is added to the metal powder mixture, and the three are fully mixed by a ball mill, and the uniformly mixed composite powder is put into a mold, and then cold-pressed with a hydraulic press at a pressure of 350 MPa at room temperature to keep The pressing time is 30s, and the cold-pressed prefabricated block is taken out, and then the cold-pressed prefabricated block is hot-pressed under the conditions of hot-pressing temperature of 380°C, pressure of 180MPa, and holding time of 40s. , making a magnesium alloy foam prefabricated block;

[0048] The second step is to prepare foamed magnesium alloy

[0049] Put the magnesium alloy foamed prefabricated block prepared in the first st...

Embodiment 3

[0051] The first step, cold pressing + hot pressing to prepare magnesium alloy foam prefabricated block

[0052] First, 250-mesh pure magnesium powder and 400-mesh pure aluminum powder are mixed in a mass ratio of 9:1 to form a metal powder mixture, and then 270-mesh TiH 2 The powdered foaming agent is added to the metal powder mixture, and the three are fully mixed by a ball mill, and the uniformly mixed composite powder is put into a mold, and then cold-pressed with a hydraulic press at a pressure of 350 MPa at room temperature to keep The pressing time is 60s, and the cold-pressed prefabricated block is taken out, and then the cold-pressed prefabricated block is hot-pressed under the conditions of hot-pressing temperature of 350°C, pressure of 150MPa, and holding time of 40s. , making a magnesium alloy foam prefabricated block;

[0053] The second step is to prepare foamed magnesium alloy

[0054] The magnesium alloy foamed prefabricated block obtained in the first step i...

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Abstract

The invention discloses a foam magnesium alloy preparing method, belonging to the field of the production of an alloy with open or closed pores. The method is particularly a method for preparing a magnesium alloy by means of foaming a powder entity and comprises the following steps: firstly, mixing 150-270-mesh pure magnesium powder and 250-400-mesh pure aluminum powder according to a mass ratio (pure magnesium powder : pure aluminum powder) ranging from 4:1 to 9:1 so as to obtain a metal powder mixture, uniformly mixing the metal powder mixture with 200-325-mesh TiH2 powder vesicant which accounts for 1.0-2.5 percent of the mass of the metal powder mixture, carrying out cold pressing and hot pressing on the mixture obtained from the previous step, and then obtaining a magnesium alloy foaming precast block; and then, under the protection of argon, preparing the foam magnesium alloy with an average aperture ranging from 1 mm to 5 mm by means of heating the foaming precast block in a mould. The method has the advantages of simple and flexible process, short period, high productive rate and no impurity; and the foam magnesium alloy prepared according to the method has a closed-pore structure and the advantages of high porosity, uniform pore structure distribution, regular pore shapes, wide application scope and good comprehensive performance.

Description

technical field [0001] The technical solution of the invention relates to the manufacture of alloys with open or closed pores, specifically the preparation method of foamed magnesium alloys. Background technique [0002] Metal foam is a heterogeneous material composed of a base metal and pores distributed therein. Because metal foam has good mechanical properties and good thermal and acoustic properties under compression, bending and torsion, it has a wide range of applications, for example, it is used as a lightweight structural material and a biological implant material, and is used to make explosives. Buffer devices, fluid filters and contact reaction supports. Although the current research and development of foamed metals is mainly focused on foamed aluminum alloys, since the density of magnesium is only 2 / 3 of that of aluminum, the advantages of light weight of foamed magnesium alloys will be more prominent than foamed aluminum alloys. Research and development has att...

Claims

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Application Information

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IPC IPC(8): C22C1/08C22C1/04
Inventor 赵维民廖波李海鹏李永艳丁俭刘小丽黄春瑛
Owner HEBEI UNIV OF TECH
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