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Titanium-based amorphous /pure titanium double-continuous phase composite material and preparation method thereof

A composite material and dual continuous phase technology, applied in the field of titanium-based amorphous composite materials, can solve the problems of macroscopic brittleness of titanium-based amorphous alloys, and achieve the effects of improving specific strength, reducing density and good mechanical properties

Active Publication Date: 2014-06-11
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] The object of the present invention is to provide a titanium-based amorphous / pure titanium dual continuous phase composite material and its preparation method, the amorphous phase of the composite material and pure titanium are both continuous and uniformly distributed in three-dimensional space, and the two phases interact with each other. Strengthening, to solve the problem of macroscopic brittleness of titanium-based amorphous alloys

Method used

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  • Titanium-based amorphous /pure titanium double-continuous phase composite material and preparation method thereof
  • Titanium-based amorphous /pure titanium double-continuous phase composite material and preparation method thereof
  • Titanium-based amorphous /pure titanium double-continuous phase composite material and preparation method thereof

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Embodiment 1

[0052] Prepare 100g of titanium-based master alloy by using arc melting equipment, the composition is: Ti 34.3 Zr 31.5 Ni 5.5 Cu 5 be 23.7 , Ti 33.6 Zr 30.9 Ni 5.4 Cu 7 be 23.1 , Ti 32.8 Zr 30.2 Ni 5.3 Cu 9 be 22.7 and Ti 32.。1 Zr 29.5 Ni 5.2 Cu 11 be 22.2 (atomic percent).

Embodiment 2

[0054] When Ti 34.3 Zr 31.5 Ni 5.5 Cu 5 be 23.7 (at.%) alloy and 60% porosity porous titanium framework (pore size is 100~200μm) composite, made of 10mm × 30mm × 70mm composite plate, its microstructure is as follows figure 1 As shown, no defects such as holes are formed at the interface, indicating that the Ti-based amorphous alloy is completely filled into the titanium skeleton. Compression test (eg Figure 4 shown) shows that the composite has high strength (compressive fracture strength 1650 MPa) and high plasticity (compressive plastic strain ~20%).

Embodiment 3

[0056] When Ti 32.8 Zr 30.2 Ni 5.3 Cu 9 be 22.7 (at.%) alloy and 40% porosity porous titanium framework (pore size 50~200μm) composite, the X-ray diffraction pattern of the composite material is as follows figure 2 as shown, figure 2 Composite material 1 and composite material 2 correspond to the central part and edge part of the composite material respectively. It can be seen from the figure that the composite material is only composed of amorphous phase and α-Ti. The central part of the composite material is sampled for DSC detection, such as image 3 As shown in the figure, the pure Ti is correspondingly given 32.8 Zr 30.2 Ni 5.3 Cu 9 be 22.7 (at.%) amorphous alloy curve as a comparison, it is found that the amorphous phase and pure Ti in the composite material 32.8 Zr 30.2 Ni 5.3 Cu 9 be 22.7 (at.%) amorphous alloys exhibited similar thermodynamic behavior, indicating that the composition of the amorphous phase in the as-prepared materials did not change s...

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Abstract

The invention discloses a titanium-based amorphous / pure titanium double-continuous phase composite material and a preparation method thereof, and belongs to the technical field of titanium-based amorphous composite materials. The titanium-based amorphous / pure titanium double-continuous phase composite material comprises a titanium-based amorphous alloy and a three-dimensional communicated porous titanium skeleton. The three-dimensional communicated porous titanium skeleton is filled with the titanium-based amorphous alloy so that a double-continuous phase structure is formed. The preparation method comprises the following steps of 1, heating to melt the selected titanium-based amorphous alloy, and 2, filling the three-dimensional communicated porous titanium skeleton with the liquid titanium-based amorphous alloy by a percolation method and carrying out water quenching, or 3, extruding the titanium-based amorphous alloy melt into a metal mold with a titanium skeleton by an extrusion casting method so that the titanium-based amorphous / pure titanium double-continuous phase composite material is obtained. The amorphous phase and the second phase (pure titanium phase) of the composite material have uniform and continuous distribution structures in the three-dimensional space, and through collaborative deformation, the two phases are mutually reinforced so that the problem of poor titanium-based amorphous phase plasticity is solved and control of composite material microstructure uniformity is realized. The titanium-based amorphous / pure titanium double-continuous phase composite material has the characteristics of excellent mechanical properties, high specific strength, uniform and controllable microstructure and no defects.

Description

technical field [0001] The invention relates to a titanium-based amorphous composite material, in particular to a titanium-based amorphous / pure titanium double continuous phase composite material and a preparation method thereof. Background technique [0002] Bulk amorphous alloy is a new type of metal material developed in the 1990s. Its crystal structure is different from traditional crystalline metal materials. The atomic arrangement structure has the unique characteristics of long-range disorder and short-range order, resulting in some Excellent performance, such as high strength, high elastic limit, and good corrosion resistance, has attracted widespread attention. Titanium-based amorphous alloy has the advantages of high specific strength and strong forming ability (the maximum forming size is greater than 50mm), so it has become a new type of engineering material with important application prospects. [0003] Although Ti-based amorphous alloys have the excellent feat...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/10C22C47/06C22C47/08C22C49/10C22C49/14C22C111/00C22C121/00
Inventor 朱正旺张海峰付华萌王爱民李宏张宏伟胡壮麒
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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