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

An aluminum alloy material, be-w-re technology, which is applied in the field of aluminum alloy materials with microalloying elements and rare earth elements and their preparation, can solve the problem of reducing the quasi-solid temperature range of the alloy, poor quality, and high hot cracking tendency. question

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 general problem of low strength (including instantaneous strength and durable strength); optimize the low-cost multi-element microalloying element formula to create material basic conditions for the cultivation and fine-graining of high-temperature phases and strengthening phases in solid solutions; and optimize Melting 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 and preparation method thereof
  • Be-W-RE high-strength heat resistant aluminum alloy material and preparation method thereof
  • Be-W-RE high-strength heat resistant aluminum alloy material and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0103] Example 1: Cu-1.0%, characteristic microalloying elements -Be, W, basic microalloying rare earth element-lanthanum La

[0104] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0105]

[0106] (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.

[0107] (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 B and rare earth element La, and stir evenly.

[0108] Mixed metal additives refer to cake or block non-sintered powder metallurgy products used for adding and adjusting alloy components, including manganese, copper, zirconium, beryllium, tungste...

Embodiment 2

[0114] Example 2: Cu-4.2%, characteristic microalloying elements -Be, W, basic microalloying rare earth elements La, Ce mixed rare earth

[0115] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[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-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 B and rare earth elements La and Ce mixed rare earths, and stir evenly.

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

Embodiment 3

[0125] Example 3: Cu-5.1%, characteristic microalloying elements -Be, W, basic microalloying rare earth element Eu

[0126] (1) Weigh various alloy elements required according to the following ingredients 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-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 B and rare earth element Eu, and stir evenly.

[0130] Mixed metal additives refer to cake or block non-sintered powder metallurgy products used for adding and adjusting alloy components, including manganese, copper, zirconium, beryllium, tu...

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Abstract

The invention discloses a high-strength heat resistant aluminum alloy material and a preparation method thereof. The material comprises the following components in percentage by weight: 1.0-10.0 percent of Cu, 0.05-1.5 percent of Mn, 0.01-0.5 percent of Cd, 0.01-0.5 percent of Ti, 0.01-0.2 percent of B, 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 and the balance of Al. In the invention, under the guidance of high-quality melts, solid solutions and a phase diagram theory, through optimizing the formulas of main alloy elements of Cu, Mn and RE ,the alloy quasi solid-phase temperature range is reduced and the problems of large heat tearing tendency, low product high-temperature strength, and the like are solved; and a low-cost multielement microalloy element formula is optimized, which creates a material base condition for the culture and the grain refining of a high-temperature phase and a strengthening phase in solid solutions so as to finally develop the high-strength heat resistant aluminum alloy material.

Description

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