Endogenous porous titanium reinforced magnesium-based amorphous composite material and preparation method thereof

An amorphous composite material and a composite material technology, which are applied to the field of endogenous porous titanium reinforced magnesium-based amorphous composite materials and their preparation, can solve the problems of poor plasticizing effect, excessively large endogenous phase size, etc. Evaporation and oxidation, high repetition rate, improved stability effect

Active Publication Date: 2022-06-28
HUAZHONG UNIV OF SCI & TECH
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Problems solved by technology

[0005] In view of the defects of the prior art, the purpose of the present invention is to provide an endogenous porous titanium-reinforced magnesium-based amorphous composite material, which aims to solve the problem of poor plasticizing effect caused by the excessive size of the endogenous phase in the current amorphous alloy composite materials. The problem

Method used

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  • Endogenous porous titanium reinforced magnesium-based amorphous composite material and preparation method thereof
  • Endogenous porous titanium reinforced magnesium-based amorphous composite material and preparation method thereof
  • Endogenous porous titanium reinforced magnesium-based amorphous composite material and preparation method thereof

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preparation example Construction

[0040] The present invention also provides a method for preparing an endogenous porous titanium-reinforced magnesium-based amorphous composite material, which comprises the following steps:

[0041] S1. Ingredients

[0042] According to the atomic fraction ratio, the expression (Mg 0.595 Cu 0.229 Gd 0.11 Ag 0.066 ) 100-x Ti x (wherein 5≤x≤15) The raw materials Mg, Cu, Gd, Ag bulk and Cu-Ti powder are batched.

[0043] In some embodiments, the raw material Mg, Cu, Gd, and Ag blocks are mechanically ground in advance to remove the surface oxide scale to ensure the high purity of each raw metal block. greater than 99.5%.

[0044] In some embodiments, the particle diameter of the Cu-Ti powder is 30 μm˜180 μm, and the atomic ratio of Cu and Ti elements in the Cu-Ti powder is 0.5˜2. The smaller the particle diameter of the Cu-Ti powder, the thicker the pore wall of the porous Ti phase under certain reaction conditions; the higher the Cu content in the Cu-Ti powder, the highe...

Embodiment 1

[0061] What is prepared in this example is (Mg 0.595 Cu 0.229 Gd 0.11 Ag 0.066 ) 95 Ti 5 The amorphous composite material specifically includes the following steps:

[0062] (1) Mechanically grind the alloy raw material to remove the oxide scale on the surface, and remove the (Mg) 0.595 Cu 0.229 Gd 0.11 Ag 0.066 ) 95 Ti 5 The atomic number ratio of the alloy is converted into mass percentage, and the corresponding Mg block, Cu block, Gd block, Ag block and Cu-Ti powder are weighed and configured (particle size is 100 μm to 150 μm, and the Cu / Ti atomic ratio is 1).

[0063] (2) Place the configured Cu block, Gd block and Ag block in the water-cooled copper mold of the vacuum electric arc furnace, and extract the vacuum to 3.0×10 -3 Pa, pass argon gas with a purity of 99.999% to a relative pressure of -0.05MPa, perform arc melting on the raw materials, keep the melting temperature at 1500 ° C ~ 1800 ° C, fully melt for 3 minutes, stop melting, and use a sample turning...

Embodiment 2

[0068] What is prepared in this example is (Mg 0.595 Cu 0.229 Gd 0.11 Ag 0.066 ) 90 Ti 10 The composite material specifically includes the following steps:

[0069] (1) Mechanically grind the alloy raw material to remove the oxide scale on the surface, and remove the (Mg) 0.595 Cu 0.229 Gd 0.11 Ag 0.066 ) 90 Ti 10 The atomic number ratio of the alloy is converted into mass percentage, and the corresponding Mg block, Cu block, Gd block, Ag block and Cu-Ti powder are weighed and configured (the particle size is 50μm~150μm, and the Cu / Ti atomic ratio is 1 / 2 ).

[0070] (2) Place the configured Cu block, Gd block and Ag block in the water-cooled copper mold of the vacuum electric arc furnace, and extract the vacuum to 3.0×10 -3 Pa, argon gas with a purity of 99.999% was introduced to a relative pressure of -0.05MPa, and the raw materials were arc smelted, keeping the smelting temperature at 1500 ℃ ~ 1800 ℃. The alloy ingot was turned over, and the smelting was repeate...

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Abstract

The invention belongs to the technical field of amorphous alloy composite materials, and particularly discloses an endogenous porous titanium reinforced magnesium-based amorphous composite material and a preparation method thereof.The composition expression of the composite material is (Mg0. 595Cu0. 229Gd0. 11Ag0. 066) 100-xTix, x is larger than or equal to 5 and smaller than or equal to 15, and the proportion in the expression is the atomic ratio; a matrix in the composite material is magnesium-based amorphous alloy, and the magnesium-based amorphous alloy comprises Mg, Cu, Gd and Ag elements; a reinforcing phase in the composite material is endogenous porous Ti particles, the porous Ti particles are uniformly dispersed in the matrix, pores of the porous Ti particles are fully filled with the matrix, and the pore size of the porous Ti particles is submicron or nanometer. The size of the second phase of the composite material can reach the submicron level and is close to the size of a magnesium-based amorphous alloy plastic processing area, and a better strengthening and toughening effect can be achieved.

Description

technical field [0001] The invention belongs to the technical field of amorphous alloy composite materials, and more particularly relates to an endogenous porous titanium-reinforced magnesium-based amorphous composite material and a preparation method thereof. Background technique [0002] Different from traditional crystalline alloys, the amorphous alloys obtained by rapid cooling retain the characteristics of short-range order and long-range disorder in the arrangement of atoms in the liquid metal, so there are no defects such as grain boundaries and dislocations inside the amorphous alloy, showing It is superior to the performance characteristics of crystalline alloys such as high strength, high hardness and large elastic limit. At present, although a series of amorphous alloys such as Zr-based, Al-based, Mg-based, Ti-based and Fe-based have been obtained in research and development, the deformation of most amorphous alloys is concentrated in the localized narrow shear ba...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C45/00B22D18/04
CPCC22C45/005C22C45/001B22D18/04C22C1/11
Inventor 郭威邵雨曼赵觅吕书林吴树森
Owner HUAZHONG UNIV OF SCI & TECH
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