C modified W-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 problems such as poor casting performance, extensive melt treatment process, and low high-temperature strength

CN102021449AInactive Publication Date: 2011-04-20GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Publication Date
2011-04-20
Estimated Expiration
Not applicable · inactive patent

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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, 0.0001-0.15 percent of C, 0.01-1.0 percent of Zr, 0.01-1.0 percent of W, 0.05-0.5 percent of RE and the balance of Al. In the invention, high-quality melts, solid solutions and a phase diagram theory are used as a guide, and the C element is used as a high-efficiency modifying agent; the alloy quasi solid-phase temperature range is reduced through optimizing the formulas of main alloy elements of Cu, Mn and RE so as to solve the problems of large heat tearing tendency, low high-temperature strength of products, and the like; 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.
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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 ...

Examples

Embodiment 1

[0112] Example 1: Cu-1.0%, characteristic microalloying element-W, basic microalloying rare earth element-La, efficient modification element-C

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

[0114]

[0115] (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.

[0116] (3) Then add Al-Mn, Al-Ti, Al-W, 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 C and rare earth element La, and stir evenly.

[0117] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy components, ...

Embodiment 2

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

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

[0125]

[0126]

[0127] (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.

[0128] (3) Then add Al-Mn, Al-Ti, Al-W, 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 C and rare earth elements La, Ce and mixed rare earth, and stir evenly.

[0129] Mixed metal additives refer to cake-shaped or massive non-sintered powde...

Embodiment 3

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

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

[0137]

[0138] (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.

[0139] (3) Then add Al-Mn, Al-Ti, Al-W, 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 C and rare earth elements La, Ce, Pr mixed rare earth, and stir evenly.

[0140] Mixed metal additives refer to cake-shaped or massive non-sintered powder metal...