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Ag-RE high-strength high-toughness aluminum alloy material and preparation method thereof

An aluminum alloy material, high strength and high toughness technology, applied in the field of aluminum alloy materials and its preparation, can solve the problems of low high temperature strength of products, poor casting performance, extensive melt treatment process, etc., achieve reasonable precipitation and distribution, and maintain purity , The effect of overcoming the threshold of cost

Active Publication Date: 2011-04-20
GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0033] The technical problem to be solved by the present invention is to solve the existing problems in the field of high-strength aluminum alloys, such as extensive melt treatment process, poor quality, large thermal cracking tendency, poor casting performance, low product yield, low high-temperature strength, waste materials and slag recycling. For technical problems such as poor usability, under the guidance of high-quality melt, solid solution and phase diagram theory, by optimizing the formula of main alloy elements Cu, Mn and rare earth elements, the temperature range of the quasi-solid phase of the alloy is reduced, and the hot cracking tendency during casting and the high temperature of the product are solved. The general problem of low strength (including instantaneous strength and durable strength); optimize the formula of multi-element microalloying elements to create material basic conditions for the cultivation and fine graining of strengthening phases in solid solutions; and optimize smelting and heat treatment technology , to achieve sufficient cultivation of strengthening phase in solid solution and full play of fine-grain effect

Method used

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  • Ag-RE high-strength high-toughness aluminum alloy material and preparation method thereof
  • Ag-RE high-strength high-toughness aluminum alloy material and preparation method thereof
  • Ag-RE high-strength high-toughness aluminum alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0108] Example 1: Cu-1.0%, characteristic microalloying element-Ag, basic microalloying rare earth element-La

[0109] (1) Weigh the various alloying elements required according to the ingredient calculation table, as follows.

[0110]

[0111]

[0112] (2) Add an appropriate amount of aluminum ingots to the melting furnace, heat it to melt it completely and keep it warm at 700-800°C; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible in a closed environment Finish.

[0113] (3) Then add Al-Mn, Al-Ti, Al-Ag, Al-Zr intermediate alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd intermediate Alloy or mixed metal additives, then add B and rare earth element La, and stir evenly.

[0114] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy components, including manganese,...

Embodiment 2

[0120] Example 2: Cu-4.2%, characteristic microalloying element-Ag, basic microalloying rare earth element-La, Ce mixed rare earth

[0121] (1) Weigh the various alloying elements required according to the ingredient calculation table, as follows.

[0122]

[0123] (2) Add an appropriate amount of aluminum ingots to the melting furnace, heat it to melt it completely and keep it warm at 700-800°C; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible in a closed environment Finish.

[0124] (3) Add Al-Mn, Al-Ti, Al-Ag, Al-Zr intermediate alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd intermediate Alloy or mixed metal additives, then add B and rare earth elements La, Ce and mixed rare earth, and stir evenly.

[0125] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy co...

Embodiment 3

[0131] Example 3: Cu-6.01%, characteristic microalloying element-Ag, basic microalloying rare earth element-La, Ce, Pr mixed rare earth

[0132] (1) Weigh the various alloying elements required according to the ingredient calculation table, as follows.

[0133]

[0134] (2) Add an appropriate amount of aluminum ingots to the melting furnace, heat it to melt it completely and keep it warm at 700-800°C; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible in a closed environment Finish.

[0135] (3) Add Al-Mn, Al-Ti, Al-Ag, Al-Zr intermediate alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd intermediate Alloy or mixed metal additives, then add B and rare earth elements La, Ce, Pr mixed rare earth, and stir evenly.

[0136] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting all...

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Abstract

The invention discloses an Ag-RE high-strength high-toughness aluminum alloy material and a preparation method thereof. The alloy comprises the following components in percentage by weight: 1.0 to 10.0 percent of Cu, 0.05 to 1.5 percent of Mn, 0.01 to 0.5 percent of Cd, 0.01 to 0.5 percent of Ti, 0.01 to 0.2 percent of B, 0.01 to 1.0 percent of Zr, 0.01 to 1.0 percent of Ag, 0.05 to 5 percent of RE, and the balance of Al. High-quality melt, solid solution and a phase diagram theory are taken as guidance, and by using a preferable alloy main element formula of Cu, Mn and RE, the quasi solid temperature range of the alloy is reduced, and the problems of large hot tearing tendency in the casting process, low high-temperature strength of products and the like are solved; by using a preferable multielement microalloying element formula, material foundation conditions are created for the cultivation of a strengthening phase in the solid solution and grain refining effect; and the high-strength high-toughness aluminum alloy material is finally manufactured by optimizing smelting and thermal treatment process technology.

Description

technical field [0001] The invention relates to an aluminum alloy material and a preparation method thereof, in particular to an Ag RE high-strength and high-toughness aluminum alloy material and a preparation method thereof. Background technique [0002] Aluminum alloy is a relatively young metal material, which only began to be used industrially in the early 20th century. During World War II, aluminum was mainly used in the manufacture of military aircraft. After the war, due to the sharp decrease in the demand for aluminum in the military industry, the aluminum industry began to develop civilian aluminum alloys, expanding its application scope from the aviation industry to the construction industry, container packaging industry, transportation industry, electric power and electronics industry, Various sectors of the national economy such as machinery manufacturing and petrochemicals are applied to people's daily lives. At present, aluminum is used in a large amount and ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/00C22C21/12C22C1/02C22C1/03C22C1/06C22F1/04C22F1/057
Inventor 车云张中可门三泉陈新孟胥光酉李祥
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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