Li-Nb-RE high-strength heat-resistance aluminium alloy material and preparation method thereof

An aluminum alloy material and heat-resistant technology, applied in the field of aluminum alloy materials of microalloying elements and rare earth elements and their preparation, can solve the problem of extensive melt treatment process, low product yield, poor recyclability of waste materials and slag materials, etc. question

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An aluminum alloy material and heat-resistant technology, applied in the field of aluminum alloy materials of microalloying elements and rare earth elements and their preparation, can solve the problem of extensive melt treatment process, low product yield, poor recyclability of waste materials and slag materials, etc. question

CN101805845AInactive Publication Date: 2010-08-18GUIZHOU HUAKE ALUMINUM MATERIAL ENG TECH RES

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Embodiment 1

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

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

[0104]

[0105] (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.

[0106] (3) Add Al-Mn, Al-Ti, Al-Li, Al-Nb, Al-Zr master alloys 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-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy components, including manganese, copp...

Embodiment 2

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

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

[0115]

[0116] (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.

[0117] (3) Add Al-Mn, Al-Ti, Al-Li, Al-Nb, Al-Zr master alloys 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 mixed rare earth, and stir evenly.

[0118]Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy compo...

Embodiment 3

[0124] Example 3: Cu-5.1%, characteristic microalloying elements-Li, Nb, basic microalloying rare earth element Eu

[0125] (1) Weigh the various alloying elements required according to the following ingredient calculation table, as follows.

[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) Add Al-Mn, Al-Ti, Al-Li, Al-Nb, Al-Zr master alloys 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.

[0129] Mixed metal additives refer to cake-shaped or massive non-sintered powder metallurgy products for adding and adjusting alloy components, including manganese, coppe...

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Abstract

The invention discloses a high-strength heat-resistance aluminum alloy material and a preparation method thereof. The material comprises the 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, 0.1-3.0% of Li, 0.01-1.0% of Nb, 0.05-5% of RE and the balance of Al. By adopting high-quality melt and solid solution and phase diagram principle as guide and preferably choosing alloy main elements Cu, Mn and RE formula, the invention reduces alloy standard solid phase temperature range and solves the problems of large hot crack tendency, low high-temperature strength of products and the like in casting; in addition, by preferably choosing low-cost multielement microalloying elemen formula, the invention creates material condition for culturing and grain refining of medium-high and strengthening phases of the solid solution so as to finally prepare the high-strength heat-resistance 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 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

Patent Timeline

18 Aug 2010

Publication

CN101805845A

IPC: C22C21/00; C22C21/12; C22C1/02; C22C1/03; C22C1/06; C22F1/04; C22F1/057

Inventors: 张中可; 车云