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Magnesium-based amorphous/porous titanium double-phase three-dimensional communicated composite material and preparation method thereof

A composite material and porous titanium technology, which is applied in the field of magnesium-based amorphous/porous titanium two-phase three-dimensional connected composite materials and its preparation, can solve problems such as brittle fracture of magnesium-based amorphous alloys, and improve plastic deformation ability and deformation resistance Strong ability, excellent performance and stable effect

Active Publication Date: 2012-03-21
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The object of the present invention is to provide a magnesium-based amorphous / porous titanium two-phase three-dimensional connected composite material and its preparation method. The amorphous phase and the reinforced phase space of the composite material are three-dimensionally connected and evenly distributed, and the two phases strengthen each other, solving the problem of magnesium Brittle Fracture of Base Amorphous Alloys

Method used

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  • Magnesium-based amorphous/porous titanium double-phase three-dimensional communicated composite material and preparation method thereof
  • Magnesium-based amorphous/porous titanium double-phase three-dimensional communicated composite material and preparation method thereof
  • Magnesium-based amorphous/porous titanium double-phase three-dimensional communicated composite material and preparation method thereof

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Effect test

Embodiment 1

[0047] Mg 63 Cu 16.8 Ag 11.2 Er 9 (at.%) amorphous alloy, its room temperature compression fracture curve is shown in image 3 Curve 1.

[0048] The size of the room temperature compression test sample is 4mm in diameter, the ratio of height to diameter is 2:1, and the test strain rate is 5×10 -4 the s -1 , and the surface and shear plane of the sample after compression fracture were observed by scanning electron microscope (SEM). The performance indicators are:

[0049] Breaking strength: σ f =1098±20MPa;

[0050] Plastic deformation amount: ε plastic = 0%.

Embodiment 2

[0052] When Mg 63 Cu 16.8 Ag1 1.2 Er 9 (at.%) alloy and 50% porosity porous titanium framework (pore size is 100 ~ 200μm), the room temperature compression fracture curve is shown in image 3 Curve 2.

[0053] The size of the room temperature compression test sample is 4mm in diameter, the ratio of height to diameter is 2:1, and the test strain rate is 5×10 -4 the s -1 , and the surface and shear plane of the sample after compression fracture were observed by scanning electron microscope (SEM). The performance indicators are:

[0054] Breaking strength: σ f =1190±20MPa;

[0055] Plastic deformation amount: ε plastic =19±2%.

Embodiment 3

[0057] When Mg 63 Cu 16.8 Ag 11.2 Er 9 (at.%) alloy and 30% porosity porous titanium framework (pore size is 100 ~ 200μm), the room temperature compression fracture curve is shown in image 3 Curve 3.

[0058] The size of the room temperature compression test sample is 4mm in diameter, the ratio of height to diameter is 2:1, and the test strain rate is 5×10 -4 the s -1 , and the surface and shear plane of the sample after compression fracture were observed by scanning electron microscope (SEM). The performance indicators are:

[0059] Breaking strength: σ f =1400±15MPa;

[0060] Plastic deformation amount: ε plastic =28±2%.

[0061] Such as figure 2 As shown, comparing the X-ray diffraction curves of the magnesium-based amorphous alloy and this embodiment, it can be seen that no chemical reaction occurs after the composite of the magnesium-based amorphous alloy matrix and the porous titanium skeleton, and the amorphous formation ability of the amorphous alloy is no...

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Abstract

The invention relates to a magnesium-based amorphous composite material, in particular to a magnesium-based amorphous / porous titanium double-phase three-dimensional communicated composite material and a preparation method thereof. The magnesium-based amorphous / porous titanium double-phase three-dimensional communicated composite material provided by the invention is a composite material of a magnesium-based amorphous alloy and a three-dimensional communicated porous titanium skeleton, and the magnesium-based amorphous alloy is filled into the porous titanium skeleton to form a double-phase three-dimensional communicated structure. The method comprises the following steps of: melting the selected magnesium-based amorphous alloy by heating, then filling the liquid alloy into pores of the three-dimensional communicated porous titanium by a seepage method or a squeezing method, and finally performing water quenching to obtain the magnesium-based amorphous / porous titanium double-phase three-dimensional communicated composite material. The amorphous phase and the reinforced phase of the composite material are in spatial three-dimensional communication, distributed uniformly and reinforced mutually to solve the problem that the magnesium-based amorphous alloy is easy to produce brittle fracture. The amorphous composite material has excellent mechanical property under large-size sample experiment conditions, and has the characteristics of high specific strength, stable performance and no defect.

Description

technical field [0001] The invention relates to a magnesium-based amorphous composite material, in particular to a magnesium-based amorphous / porous titanium dual-phase three-dimensional connected composite material and a preparation method thereof. Background technique [0002] Due to the unique long-range disorder and short-range order atomic arrangement structure, amorphous metal materials have some excellent performances, such as: high strength, high elastic limit, good corrosion resistance and so on. Magnesium-based amorphous alloy has the unique advantage of high specific strength and has become a new type of engineering material with application prospects. In addition, China is rich in magnesium resources, which makes the development and research of magnesium-based amorphous metal materials have practical significance. [0003] The intrinsic brittleness of magnesium-based amorphous alloys seriously restricts its application. When deformed at room temperature, almost a...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C49/04C22C49/14C22C47/08C22C111/00
Inventor 张海峰孙羽王爱民李宏付华萌胡壮麒
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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