Be-Li-RE high-strength heat-resistant aluminum alloy material and preparation method thereof

An aluminum alloy material and heat-resistant technology, which is applied in the field of aluminum alloy materials of microalloying elements and rare earth elements and its preparation, can solve the problems of poor reusability of waste materials and slag materials, extensive melt treatment process, and poor casting performance

Inactive 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

[0025] 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 gen

Method used

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  • Be-Li-RE high-strength heat-resistant aluminum alloy material and preparation method thereof
  • Be-Li-RE high-strength heat-resistant aluminum alloy material and preparation method thereof
  • Be-Li-RE high-strength heat-resistant aluminum alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0102] Example 1: Cu-1.0%, characteristic microalloying elements -Be and Li, basic microalloying rare earth element-lanthanum La

[0103] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0104]

[0105] (2) Add an appropriate amount of aluminum ingot to the melting furnace, heat it to melt completely and keep it at 700~800℃; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible and in a closed environment carry out.

[0106] (3) Add Al-Mn, Al-Ti, Al-Be, Al-Li, Al-Zr master alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd master alloy or mixed metal additives, then add B and rare earth element La, and stir evenly.

[0107] Mixed metal additives refer to cake-like or block-like non-sintered powder metallurgy products used for adding and adjusting alloy components, including manganese, copper, zirconium, ber...

Example Embodiment

[0113] Example 2: Cu-4.2%, characteristic microalloying elements -Be, Li, basic microalloying rare earth elements -La, Ce mixed rare earth

[0114] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0115]

[0116]

[0117] (2) Add an appropriate amount of aluminum ingot to the melting furnace, heat it to melt completely and keep it at 700~800℃; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible and in a closed environment carry out.

[0118] (3) Add Al-Mn, Al-Ti, Al-Be, Al-Li, Al-Zr master alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd master alloy or mixed metal additives, then add B and rare earth elements La and Ce mixed rare earths, and stir well.

[0119] Mixed metal additives refer to cake-like or block-like non-sintered powder metallurgy products used for adding and adjusting alloy components, ...

Example Embodiment

[0125] Example 3: Cu-6.01%, characteristic microalloying elements -Be, Li, basic microalloying rare earth elements-La, Ce, Pr mixed rare earth

[0126] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0127]

[0128] (2) Add an appropriate amount of aluminum ingot to the melting furnace, heat it to melt completely and keep it at 700~800℃; in order to prevent the melt from inhaling too much air, the melting process should be as short as possible and in a closed environment carry out.

[0129] (3) Add Al-Mn, Al-Ti, Al-Be, Al-Li, Al-Zr master alloy or mixed metal additives (including salt compounds) according to the formula ratio, and then add Cu pure metal and Al-Cd master alloy or mixed metal additives, then add B and rare earth elements La, Ce, Pr mixed rare earth, and stir evenly.

[0130] Mixed metal additives refer to cake-like or block-like non-sintered powder metallurgy products used for adding and adjusting alloy components, inc...

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Abstract

The invention discloses a high-strength heat-resistant aluminum alloy material and a preparation method thereof. The high-strength heat-resistant aluminum alloy material comprises the following components in percentage by weight: 1.0-10.0% of Cu, 0.05-1.5% of Mn, 0.01-0.5% of Cd, 0.01-0.5% of Ti, 0.01-0.2% of B, 0.01-1.0% of Zr, 0.001-0.1% of Be, 0.01-3.0% of Li, 0.05-5% of RE and the balance of Al. With high-quality melt, sosoloid and the phase diagram theory as the guidance, the invention reduces the quasi solid-phase temperature range of the alloy and solves the problems of great thermal cracking tendency during casting, low high-temperature strength of products and the like by preferably selecting the formation of main alloy elements of Cu, Mn and RE. The preferable selection of the formulation of low-cost multielement microalloy elements creates material base conditions for breeding and grain-refining a high-temperature phase and a strengthening phase in the sosoloid, and a high-strength heat-resistant aluminum alloy material is finally developed.

Description

technical field [0001] The invention relates to an aluminum alloy material and a preparation method thereof, in particular to an aluminum alloy material containing microalloying elements and rare earth elements 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 ...

Claims

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Application Information

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IPC IPC(8): C22C21/00C22C21/12C22C1/02C22C1/03C22C1/06C22F1/04C22F1/057
Inventor 门三泉陈新孟车云张中可李祥胥光酉
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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