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Method for preparing amorphous/crystal composite structure aluminium-based alloy

An aluminum-based alloy and composite structure technology, applied in the field of metal materials, can solve problems such as low strength and reduced material properties, and achieve the effects of easy alloy structure, uniform size and distribution, and simple process.

Inactive Publication Date: 2011-08-31
CENT SOUTH UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, in order to achieve metallurgical bonding at the powder interface, sintering treatment is required, which will make amorphous crystallization and reduce the performance of the material
At the same time, the strength of the bulk material prepared by the powder metallurgy method is affected by the original powder interface bonding strength, the interface bonding state between the amorphous and the second phase material, and the distribution uniformity of the second phase. Compared with the amorphous alloy prepared by rapid solidification, the strength lower

Method used

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  • Method for preparing amorphous/crystal composite structure aluminium-based alloy
  • Method for preparing amorphous/crystal composite structure aluminium-based alloy
  • Method for preparing amorphous/crystal composite structure aluminium-based alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] Example 1: Al 83 Ni 10 Ce 6 Zr 1 (at.%) Amorphous / crystalline composite structure material

[0044] Step 1: Ingredients

[0045] Select industrial pure metal, according to the composition Al 83 Ni 10 Ce 6 Zr 1 (at.%) Ingredients. When batching, it should be mechanically polished to remove the pollution layer on the surface of pure metal raw materials, and then cleaned with a mixed solution of alcohol and acetone and air-dried;

[0046] Step 2: Preparation of master alloy

[0047] Melt the alloy raw material prepared in the first step in a vacuum electric arc furnace to obtain a uniformly smelted master alloy;

[0048] The third step: throwing the tape to prepare the amorphous tape

[0049] The master alloy prepared in the second step is divided into two parts. After the surface is mechanically polished and cleaned, one part is heated and remelted in the quartz tube at the lower end of the grinding port. After the master alloy is completely melted, the master ...

Embodiment 2

[0052] Example 2: Al 80 Ni 10 Ce 6 Zr 4 (at.%) Amorphous / crystalline composite structure material

[0053] The nominal composition Al 80 Ni 10 Ce 6 Zr 4 (at.%) alloy, according to the method and step of example 1, under the constant magnetic field effect of 900Gs in magnetic field intensity, prepare the D sample that applies strong magnetic field effect and the non-enhanced magnetic field effect in the solidification process with 20m / s linear speed The C sample; Utilize X-ray diffractometer (XRD) to carry out phase analysis, the result shows that C sample is amorphous structure ( figure 2 Curve 3), D sample contains crystallized phase ( figure 2 Curve 4); Utilize scanning electron microscope to observe respectively to C, D sample, the result shows: C sample does not observe crystallization phase ( image 3 ), sample D is an amorphous / crystalline composite structure with uniform distribution of crystallized phases in the amorphous matrix ( Figure 4 ).

Embodiment 3

[0054] Example 3: Al 83 Ni 10 Ce 6 PR 1 (at.%) Amorphous / crystalline composite structure material

[0055] The nominal composition Al 83 Ni 10 Ce 6 PR 1 (at.%) alloy, according to the method and step of example 1, under the constant magnetic field effect of 1000Gs in magnetic field strength, prepare the F sample that applies strong magnetic field effect and the non-enhanced magnetic field effect in the solidification process with 10m / s linear speed The E sample; Utilize X-ray diffractometer (XRD) to carry out phase analysis, the result shows that the strip material of E sample is amorphous structure, and F sample contains crystallized phase; Utilize scanning electron microscope to the observation of E, F sample respectively, result It shows that no crystalline phase is observed in the prepared E sample, and the F sample is an amorphous / crystalline composite structure with uniformly distributed crystal phases on the amorphous matrix.

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Abstract

The invention discloses a method for preparing amorphous / crystal composite structure aluminium-based alloy. The composition is as follows: Al(84-x)Ni10Ce6Prx (in percentage by weight), or Al(84-x)Ni10Ce6Zrx (in percentage by weight), wherein x is equal to 1 to 4. The method for preparing the amorphous / crystal composite structure aluminium-based alloy comprises the following steps: during the processes of fast solidifying aluminium-based alloy melt and preparing the amorphous alloy, applying stable and constant magnetic field action on a melt solidification process; and controlling the forming of the solidified tissue structure of the alloy, thus obtaining amorphous / crystal composite structure materials. The intensity of the applied stable and constant magnetic field ranges from 900Gs to 1,200Gs; the selected alloy is alloy capable of forming complete amorphous tissues, parent alloy is prepared through vacuum arc melting or vacuum induction melting according to composition distribution, then the stable and constant magnetic field is applied on the melt solidifying process, and the amorphous / crystal composite structure materials are prepared according to the preparation technique of fast solidifying alloy melt and preparing the amorphous alloy. The invention provides a method for directly preparing the amorphous / crystal composite structure tissues, the phase distribution of crystals in the prepared amorphous / crystal composite structure is uniform, the preparation process ensures that the original preparation technique is not changed, and the technique process is simple.

Description

technical field [0001] The invention relates to a preparation method of an amorphous / crystal composite structure material, in particular to a preparation method of an amorphous / crystal composite structure aluminum base alloy. It belongs to the technical field of metal materials. Background technique [0002] Due to the special structure, amorphous alloys have excellent physical, chemical and mechanical properties, and have broad application prospects. Although amorphous alloy materials have good strength, they lack plasticity and are prone to brittle fracture failure, and the plasticity is almost negligible under uniaxial tension (0.5%, when stretched) [C.C.Hays, C.P.Kim, W.L.Johnson, Phys.Rev.Lett.84(2000) 2901-2904], limiting the structural application of amorphous alloy materials. The preparation of materials with amorphous / crystalline phase composite structure can not only improve their plasticity, but also further increase their strength and improve their comprehensiv...

Claims

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Application Information

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IPC IPC(8): C22C45/08B22D11/06
Inventor 刘祖铭黄立清黄群陈芝霖张刘杰李飞刘咏
Owner CENT SOUTH UNIV
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