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Block body aluminum-based alloy and preparation method thereof

An aluminum-based alloy and bulk technology, which is applied in the field of high-strength and toughness Al-based alloys and their preparation, can solve the problems of inability to prepare millimeter-sized bulk Al-based amorphous alloys, and restrict the research and development of Al-based alloys, and achieves improved engineering. Application value, improvement of comprehensive mechanical performance indicators, and the effect of low equipment cost

Inactive Publication Date: 2009-06-10
BEIHANG UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, Al-based amorphous alloys have never broken through the size constraints. So far, most of the research and invention patents are limited to Al-based amorphous strips. The tensile fracture strength can reach the order of 1200MPa, and the amorphous strips compounded with nano-fcc-Al The band can reach the order of 1500MPa, but so far it has not been possible to prepare millimeter-sized bulk Al-based amorphous alloys, which severely limits the research and development of Al-based alloys in terms of size, and has always been the biggest obstacle to its application as structural materials.

Method used

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  • Block body aluminum-based alloy and preparation method thereof
  • Block body aluminum-based alloy and preparation method thereof
  • Block body aluminum-based alloy and preparation method thereof

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Embodiment 1

[0023] In this embodiment, TM is selected as a combination of transition metals Ni and Co; the percentage of atoms is 4 and 3 respectively; RE is the adjacent element Sc of element Y in the periodic table, and the percentage of atoms is 1; The percentage is 0.5; the percentage of Y atoms is 6; the rest is 85.5 of Al atoms, and the molecular formula of the obtained bulk aluminum-based alloy is Al 85.5 Si 0.5 Ni 4 co 3 Y 6 sc 1 .

[0024] The bulk alloy Al in this example 85.5 Si 0.5 Ni 4 co 3 Y 6 sc 1 The preparation method is as follows:

[0025] Step 1: Press Al 85.5 Si 0.5 Ni 4 co 3 Y 6 sc 1 Chemical composition ratio for batching;

[0026] Press Al 85.5 Si 0.5 Ni 4 co 3 Y 6 sc 1 Calculate and weigh the corresponding raw material quality;

[0027] Step 2: Melting to prepare Al 85.5 Si 0.5 Ni 4 co 3 Y 6 sc 1 master alloy;

[0028] Put the raw materials of the target ingredients weighed in step 1 into the vacuum arc melting furnace, and vacuumiz...

Embodiment 2

[0032] In this embodiment, TM is selected as a combination of transition metals Ni and Ag; the percentages of atoms are 1 and 1 respectively; the percentages of Si atoms are 5; the percentages of Y atoms are 10; the rest are the percentages of Al atoms is 83, and the molecular formula of the obtained bulk aluminum-based alloy is Al 83 Si 5 Ni 1 Ag 1 Y 10 .

[0033] The bulk alloy Al in this example 83 Si 5 Ni 1 Ag 1 Y 10 The preparation method is as follows:

[0034] Step 1: Press Al 83 Si 5 Ni 1 Ag 1 Y 10 Chemical composition ratio for batching;

[0035] Press Al 83 Si 5 Ni 1 Ag 1 Y 10 Calculate and weigh the corresponding raw material quality;

[0036] Step 2: Melting to prepare Al 83 Si 5 Ni 1 Ag 1 Y 10 master alloy;

[0037] Put the raw materials of the target ingredients weighed in step 1 into the vacuum arc melting furnace, and vacuumize to 1-5×10 -3 Pa, filled with argon protective gas at a pressure of 0.02-0.09MPa; adjusted current 200-350A,...

Embodiment 3

[0041] This embodiment selects TM to be the combination of transition metals Ni, Co and Ag; the percentage of atoms is 3, 3 and 2 respectively; RE is the adjacent element Ca in the periodic table of element Y and La in the La series rare earth Combination, the percentages of atoms are 2 and 3 respectively; the percentage of Si atoms is 1; the percentage of Y atoms is 6; the rest is 80% of Al atoms, the molecular formula of the obtained bulk aluminum-based alloy is Al 80 Si 1 Ni 3 co 3 Ag 2 Y 6 Ca 2 La 3 .

[0042] The bulk alloy Al in this example 80 Si 1 Ni 3 co 3 Ag 2 Y 6 Ca 2 La 3 The preparation method is as follows:

[0043] Step 1: Press Al 80 Si 1 Ni 3 co 3 Ag 2 Y 6 Ca 2 La 3 Chemical composition ratio for batching;

[0044] Press Al 80 Si 1 Ni 3 co 3 Ag 2 Y 6 Ca 2 La 3 Calculate and weigh the corresponding raw material quality;

[0045] Step 2: Melting to prepare Al 80 Si 1 Ni 3 co 3 Ag 2 Y 6 Ca 2 La 3 master alloy;

[0046] P...

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Abstract

The invention discloses a blocky aluminum-based alloy, which is characterized in that the components of the alloy are expressed by the following formula: AlaSibTMcYdREe, wherein a plus b plus c plus d plus e is equal to 100, TM can be one or a mixture of transition metals such as Ni, Co and Ag, and RE can be one or a mixture of La, Gd and Ce in the Sc, Zr, Ca, Ti and La systems of rare earth elements which are the adjacent elements of element Y in the periodic table; wherein, the atom percentage of b is 0.2 to 5, the atom percentage of c is 2 to 10, the percentage of d is 4 to 10, the atom percentage of e is 0 to 5, the balance is the atom percentage of a. The preparation method comprises: preparing the materials according to the proportion; smelting and preparing a master alloy; and preparing the blocky aluminum-based alloy through a freezing method integrated with a casting die. The blocky aluminum-based alloy has the high strength above 500 MPa. As the strength can be as high as 1000MPa to 1300MPa and the plastic deformation is 0 to 20 percent, the blocky aluminum-based alloy can be used for parts of fine structures.

Description

technical field [0001] The invention belongs to the field of alloy materials and technical processing; in particular, it relates to a high-strength and toughness Al-based alloy with high glass-forming ability applied to structural materials and a preparation method thereof. Background technique [0002] The amorphous alloys prepared by rapid solidification have unique mechanical properties, magnetic properties, corrosion resistance and electrical properties because they do not have a long-range atomic order structure. Therefore, the study of amorphous alloy materials has become an important aspect of material research. field. Al-based amorphous phase / nanophase composite material is currently the metal material with the highest specific strength (specific strength 3.5×10 5 N·m / kg), is an ideal material for aerospace and aerospace structural parts. As a lightweight alloy, aluminum alloy has become one of the most widely used metal materials at present. Due to its light weigh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C1/03
Inventor 张涛卓龙超逄淑杰
Owner BEIHANG UNIV
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