Amorphous composite material with oxygen-modulated phase transition and preparation method thereof

A technology of amorphous composite materials and composite materials, which is applied in the field of oxygen-modulated phase transition amorphous composite materials and its preparation, can solve the problems that limit the development and application of amorphous composite materials, and achieve the suppression of rapid expansion, large compression plasticity, The effect of excellent mechanical properties

Active Publication Date: 2020-05-08
NORTHEASTERN UNIV LIAONING
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, traditional amorphous composite materials often exhibit processing softening, which greatly limits the development and application of amorphous composite materials.

Method used

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  • Amorphous composite material with oxygen-modulated phase transition and preparation method thereof
  • Amorphous composite material with oxygen-modulated phase transition and preparation method thereof
  • Amorphous composite material with oxygen-modulated phase transition and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Preparation of TiZr-based amorphous composite material with O content of 6 at.%:

[0026] The first step: Weigh the pure metal raw material and CuO (purity greater than 99.9%) according to the atomic percentage of No. 1 in Table 1, wherein O is added in the form of CuO, Cu is added in the form of CuO and pure metal Cu, and the remaining elements are added in the form of pure metal , weighing accuracy is 0.001g;

[0027] The second step: smelting in a high-vacuum non-consumable electric arc furnace to obtain an 80g master alloy ingot;

[0028] Step 3: Take 25g of the master alloy and cast it into a copper mold to obtain a rod-shaped sample with a diameter of 8mm.

Embodiment 2

[0030] The difference between this example and Example 1 is that its O content is different, and the O content of the prepared composite material is 1 at.%; O is represented by ZrO 2 Form added, Zr as ZrO 2 And pure metal Zr form added.

[0031] The first step: take the pure metal raw material and ZrO according to the atomic percentage of No. 2 in Table 1 2 (purity greater than 99.9%), weighing accuracy is 0.001g;

[0032] Second step: same as embodiment 1;

[0033] The third step: same as embodiment 1.

Embodiment 3

[0035] The difference between this example and Example 1 is that its O content is different, and the O content of the prepared composite material is 5 at.%; O is represented by TiO 2 Form added, Ti as TiO 2 And pure metal Ti added.

[0036] The first step: Weigh the pure metal raw material and TiO according to the atomic percentage of No. 3 in Table 1 2 (purity greater than 99.9%), weighing accuracy is 0.001g;

[0037] Second step: same as embodiment 1;

[0038] The third step: same as embodiment 1.

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Abstract

The invention belongs to the technical field of metal materials, and discloses an amorphous composite material with phase transition modulated by oxygen and a preparation method thereof. The main chemical composition of the composite material is Ti a Zr b Ni c Cu d be e o f , where a, b, c, d, e and f are the atomic percentages of the corresponding elements, 31≤a≤63, 26≤b≤40, 0.1≤c≤6, 1≤d≤10, 1≤e≤22, 0.1≤f≤6, and a+b+c+d+e+f=100; the material is a type of amorphous composite material with deformation-induced martensitic transformation. The method is mainly to add the oxide of metal M to the alloy during smelting to realize the addition of O element, and M is one or more of Ti, Zr and Cu. The addition of O element can effectively modulate the dynamic characteristics and distribution of deformation-induced martensitic transformation, so that the amorphous composite material exhibits excellent comprehensive mechanical properties such as high strength, large plasticity and good work hardening ability. The invention has important guiding significance for the industrial production and practical application of the amorphous alloy and its composite material.

Description

technical field [0001] The invention belongs to the technical field of metal materials, in particular to an amorphous composite material with phase transition modulated by oxygen and a preparation method thereof. Background technique [0002] Amorphous alloys have many excellent properties due to their long-range disorder and short-range order, such as high strength, high hardness, high elastic limit, and good corrosion resistance. But amorphous alloys rely on highly localized shear bands for deformation, and their homogeneous structure causes shear bands, once initiated, to rapidly propagate and brittle failure throughout the entire sample. In order to improve the plasticity of amorphous alloys, the researchers designed a class of amorphous alloys by adding a crystalline second phase with an inhomogeneous structure to the uniform amorphous matrix by referring to the concept of adding a second phase to hinder dislocation movement in crystalline materials. composite material...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C45/10C22C1/02C22C1/10
CPCC22C1/1036C22C45/10C22C1/1047C22C1/11
Inventor 牟娟赵子彦王沿东
Owner NORTHEASTERN UNIV LIAONING
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