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Be-W-RE high-strength heat-resistant aluminum alloy material with C as modifier and preparation method thereof

An aluminum alloy material and heat-resistant technology, which is applied in the field of Be-W-RE high-strength heat-resistant aluminum alloy material 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

[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, guided by high-quality melt, solid solution and phase diagram theory, using C element as a high-efficiency modifier, by optimizing the alloy main element Cu, Mn and rare earth element formula, reducing the quasi-solid phase temperature range of the alloy, and solving the problem of casting The general problem of high thermal cracking tendency and low high-temperature strength of products (including instantaneous strength and durable strength); the low-cost multi-element microalloying element formula is preferred for the cultivation and fine-graining of high-temperature phases and strengthening phases in solid solutions Create material basic conditions; and optimize smelting and heat treatment technology to realize sufficient cultivation of high-temperature phase and strengthening phase in solid solution and full play of fine-graining effect

Method used

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  • Be-W-RE high-strength heat-resistant aluminum alloy material with C as modifier and preparation method thereof
  • Be-W-RE high-strength heat-resistant aluminum alloy material with C as modifier and preparation method thereof
  • Be-W-RE high-strength heat-resistant aluminum alloy material with C as modifier and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0117] Example 1: Cu-1.0%, characteristic microalloying elements -Be and W, basic microalloying rare earth element-lanthanum La, high-efficiency modification element -C

[0118] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0119]

[0120] (2) Add an appropriate amount of aluminum ingot to the melting furnace, heat it to melt it 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.

[0121] (3) Add Al-Mn, Al-Ti, Al-Be, Al-W, 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 C and rare earth element La, and stir evenly.

[0122] Mixed metal additives refer to cake or block non-sintered powder metallurgy products used for adding and adjusting alloy components, including m...

Embodiment 2

[0128] Example 2: Cu-4.2%, characteristic microalloying elements -Be, W, basic microalloying rare earth elements La, Ce mixed rare earths, high-efficiency metamorphic element -C

[0129] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0130]

[0131] (2) Add an appropriate amount of aluminum ingot to the melting furnace, heat it to melt it 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.

[0132] (3) Add Al-Mn, Al-Ti, Al-Be, Al-W, 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 C and rare earth elements La and Ce mixed rare earths, and stir evenly.

[0133] Mixed metal additives refer to cake or block non-sintered powder metallurgy products used for adding and adju...

Embodiment 3

[0139] Example 3: Cu-5.1%, characteristic microalloying elements -Be, W, basic microalloying rare earth element Eu, high-efficiency modification element -C

[0140] (1) Weigh various alloy elements required according to the following ingredients calculation table, as follows.

[0141]

[0142]

[0143] (2) Add an appropriate amount of aluminum ingot to the melting furnace, heat it to melt it 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.

[0144] (3) Add Al-Mn, Al-ti, Al-Be, Al-W, 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 C and rare earth element Eu, and stir evenly.

[0145] Mixed metal additives refer to cake or block non-sintered powder metallurgy products used for adding and adjusting alloy components, ...

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Abstract

The invention discloses a Be-W-RE high-strength heat-resistant aluminum alloy material with C as a modifier, which comprises the following components in percent by weight: 1.0-10.0 percent of Cu, 0.05-1.5 percent of Mn, 0.05-0.5 percent of Cd, 0.05-0.5 percent of Ti, 0.0001-0.15 percent of C, 0.01-1.0 percent of Zr, 0.001-0.1 percent of Be, 0.01-1.0 percent of W, 0.05-5 percent of RE which is a rare earth element and the balance of Al. With high-quality melt, solid solution and phase diagram theory as guidance and C element as a high-efficiency modifier, through optimizing main alloy elementsof Cu, Mn and RE, according to the invention, the alloy quasi solid phase temperature range is reduced and the problems of large heat cracking tendency, low high-temperature strength of products, andthe like are solved; and through optimizing a low-cost multielement microalloying element formula, the 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 a Be-W-RE high-strength heat-resistant aluminum alloy material modified by C and a preparation method thereof. Background technique [0002] Aluminum alloy is a relatively young metal material, which only started industrial application in the early 20th century. During the Second World War, aluminum was mainly used to manufacture military aircraft. After the war, due to the sudden drop in the military industry’s demand for aluminum, the aluminum industry began to develop civilian aluminum alloys, and its application range was expanded from the aviation industry to the construction industry, container and packaging industry, transportation, power and electronics industry, Various sectors of the national economy, such as machinery manufacturing and petrochemical industries, are applied to people's daily lives. At present, aluminum is used in a large amount...

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 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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