High-strength high-ductility high-modulus aluminum alloy material based on extrusion casting technique, and preparation process of high-strength high-ductility high-modulus aluminum alloy material

An aluminum alloy material and extrusion casting technology, which is applied in the field of metal materials, can solve the problems that the elastic modulus and strength of aluminum alloy cannot meet the use requirements, achieve excellent mechanical properties, improve the elastic modulus of the alloy, and have the effect of simple preparation method

Inactive Publication Date: 2019-07-12
SHANGHAI JIAO TONG UNIV +3
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The main purpose of the present invention is to provide a high-strength, toughness and high-modulus aluminum alloy material based on the squeeze casting process, which has excellent mechanical properties and

Method used

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  • High-strength high-ductility high-modulus aluminum alloy material based on extrusion casting technique, and preparation process of high-strength high-ductility high-modulus aluminum alloy material
  • High-strength high-ductility high-modulus aluminum alloy material based on extrusion casting technique, and preparation process of high-strength high-ductility high-modulus aluminum alloy material

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Experimental program
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Embodiment 1

[0035] The high-strength and high-modulus aluminum alloy material provided in this embodiment is composed of the following elements in terms of mass percentage: Mg: 2.6%, Zn: 3.0%, Cu: 0.5%, Ti: 0.002%, B: 0.0005%, Ce: 0.3%, La: 0.2%, Cr: 5.0%, and unavoidable impurities Fe≤0.3%, Si≤0.15%, Al balance. Its extrusion casting method steps are as follows:

[0036]a. Melting the alloy to obtain an aluminum alloy melt. Melting steps: (1) Baking, preheating the raw materials at 250°C for 2 hours; (2) Melting, setting the melting temperature of the melting furnace to 800°C, and when the furnace temperature rises to 300°C, add industrial pure aluminum, aluminum-copper master alloy , to melt, stir evenly; melt temperature rises to 760°C, add industrial pure zinc, aluminum-cerium, aluminum-lanthanum, aluminum-chromium intermediate alloy, stir evenly, until melt clear; when the melt temperature drops to 720°C , add industrial pure magnesium, melt, and stir evenly until the melt is clear...

Embodiment 2

[0041] The high-strength, toughness and high-modulus aluminum alloy material provided in this embodiment is composed of the following elements in terms of mass percentage: Mg: 4.1%, Zn: 3.0%, Cu: 2.0%, Ti: 0.00005%, B: 0.00001%, Ce: 0.2%, La: 0.1%, Mn: 1.0%, Cr: 1.0%, V: 1.0%, and unavoidable impurities Fe≤0.3%, Si≤0.15%, Al balance. Its extrusion casting method steps are as follows:

[0042] a. Melting the alloy to obtain an aluminum alloy melt. Melting steps: (1) Baking, preheating the raw materials at 250°C for 2 hours; (2) Melting, setting the melting temperature of the melting furnace to 800°C, and when the furnace temperature rises to 300°C, add industrial pure aluminum, aluminum-copper master alloy , until melted, and stirred evenly; the melt was heated up to 760°C, and industrial pure zinc, aluminum-cerium, aluminum-lanthanum, aluminum-manganese, aluminum-chromium, aluminum-vanadium intermediate alloys were added, stirred evenly, until melted; When the melt temperatu...

Embodiment 3

[0047] The high-strength, toughness and high-modulus aluminum alloy material provided in this embodiment is composed of the following elements in terms of mass percentage: Mg: 4.3%, Zn: 5.2%, Cu: 0.7%, Ti: 0.01%, B: 0.002%, La: 0.01 %, Cr: 0.1%, and unavoidable impurities Fe≤0.3%, Si≤0.15%, Al balance. Its extrusion casting method steps are as follows:

[0048] a. Melting the alloy to obtain an aluminum alloy melt. Melting steps: (1) Baking, preheating the raw materials at 250°C for 2 hours; (2) Melting, setting the melting temperature of the melting furnace to 800°C, and when the furnace temperature rises to 300°C, add industrial pure aluminum, aluminum-copper master alloy , until the melt is clear, and stir evenly; the melt is heated to 760°C, add industrial pure zinc, aluminum-lanthanum, aluminum-chromium intermediate alloy and stir evenly until the melt is clear; when the melt temperature drops to 720°C, add industrial pure magnesium , melted, and stirred evenly until th...

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Abstract

The invention discloses a high-strength high-ductility high-modulus aluminum alloy material based on an extrusion casting technique, and a preparation process of the high-strength high-ductility high-modulus aluminum alloy material. The aluminum alloy material consists of the following elements, by weight, of: 2.5% to 6.0% of Mg, 3.0% to 6.0% of Zn, 0.5% to 2.0% of Cu, 0.01% to 1.2% of one or twoof rare-earth elements Ce and La, 0.00005% to 0.5% of Ti, 0.00001% to 0.1% of B, 2.0% to 10.0% of one or two or more of Mn, Cr and V and the balances Al and smaller than or equal to 0.45% of impurities. One or more of the Mn, Cr and V and the rare-earth elements Ce and La are simultaneously added to the matrix alloy by means of composite alloying, so that the elastic modulus of the alloy is increased, and the excellent mechanical properties of the matrix alloy are maintained; and the preparation process is simple, good in process stability and high in process controllability.

Description

technical field [0001] The invention belongs to the technical field of metal materials, and in particular relates to a high-strength, toughness and high-modulus aluminum alloy material based on a squeeze casting process, and also relates to a preparation method of the above-mentioned aluminum alloy material. Background technique [0002] Aluminum alloy is a general term for alloys based on aluminum. The main alloying elements are copper, silicon, magnesium, zinc, manganese, and the secondary alloying elements are nickel, iron, titanium, chromium, lithium, etc. Aluminum alloy is the most widely used non-ferrous metal structural material in industry, and has been widely used in aviation, aerospace, automobile, machinery manufacturing, shipbuilding and chemical industry. [0003] Aluminum alloy has low density, but relatively high strength, which is close to or exceeds high-quality steel. It has good plasticity and can be processed into various profiles. It has excellent elect...

Claims

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Application Information

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IPC IPC(8): B22D18/02C22C1/03C22C1/06C22C21/08C22C21/10C22F1/047C22F1/053
CPCB22D18/02C22C1/026C22C1/03C22C1/06C22C21/08C22C21/10C22F1/047C22F1/053
Inventor 王渠东汤华平雷川王春涛张继斌林真丁文江
Owner SHANGHAI JIAO TONG UNIV
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