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C modified Co-RE high-strength heat resistant aluminum alloy material and preparation method thereof

An aluminum alloy material and high-strength technology, which is applied in the field of aluminum alloy materials of microalloying elements and rare earth elements and its preparation, can solve problems such as poor casting performance, low high-temperature strength of products, and reduction of the quasi-solid phase temperature range of alloys.

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 temp

Method used

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  • C modified Co-RE high-strength heat resistant aluminum alloy material and preparation method thereof
  • C modified Co-RE high-strength heat resistant aluminum alloy material and preparation method thereof
  • C modified Co-RE high-strength heat resistant aluminum alloy material and preparation method thereof

Examples

Experimental program
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Effect test

Embodiment 1

[0112] Example 1: Cu-1.0%, characteristic microalloying element -Co, basic microalloying rare earth element -La, high-efficiency metamorphic element -C

[0113] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0114]

[0115] (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.

[0116] (3) Add Al-Mn, Al-Ti, Al-Co, 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 intermediate Alloy or mixed metal additives, then add C and rare earth element La, and stir evenly.

[0117] Mixed metal additives refer to cake or block non-sintered powder metallurgy products used for adding and adjusting alloy components, including manganese, copper, zi...

Embodiment 2

[0123] Example 2: Cu-4.2%, characteristic microalloying element-Co, basic microalloying rare earth element-La, Ce mixed rare earth, high-efficiency metamorphic element-C

[0124] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0125]

[0126]

[0127] (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.

[0128] (3) Add Al-Mn, Al-Ti, Al-Co, 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 intermediate Alloy or mixed metal additives, then add C and rare earth elements La and Ce mixed rare earths, and stir evenly.

[0129] Mixed metal additives refer to cake or block non-sintered powder metallurgy products used for adding and adjust...

Embodiment 3

[0135] Example 3: Cu-6.01%, characteristic microalloying element -Co, basic microalloying rare earth element -La, Ce, Pr mixed rare earth, high-efficiency metamorphic element -C

[0136] (1) Weigh the required alloy elements according to the ingredient calculation table, as follows.

[0137]

[0138] (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.

[0139] (3) Add Al-Mn, Al-Ti, Al-Co, 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 intermediate Alloy or mixed metal additives, then add C and rare earth elements La, Ce, Pr mixed rare earth, and stir evenly.

[0140] Mixed metal additives refer to cake or block non-sintered powder metallurgy products used for adding and adjusti...

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Abstract

The invention discloses a C modified Co-RE high-strength heat resistant aluminum alloy material and a preparation method thereof. The material 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, 0.0001 to 0.15 percent of C, 0.01 to 1.0 percent of Zr, 0.01 to 1.0 percent of Co, 0.05 to 5 percent of RE, and the balance of Al. The problems of high thermal cracking tendency during casting, low product high-temperature strength and the like are solved by using high-quality melt, solid solution and phase diagram theory as directions, using C element as an efficient modifier, preferably selecting a formula of Cu, Mn and RE serving as main alloy elements and reducing the temperature range of alloy quasi solid phases; and by preferably selecting a low-cost multi-element micro alloying element formula, a material foundation condition is created for culture and grain refining action of a high-temperature phase and a reinforcing phase in the solid solution in the alloy material, and the high-strength heat resistant aluminum alloy material is finally researched.

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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IPC IPC(8): C22C21/12C22C21/00C22C1/02C22C1/03C22C1/06C22F1/04C22F1/057
Inventor 张中可车云陈新孟门三泉胥光酉李祥
Owner GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES