Preparation method of high-strength and corrosion-resistant Al-Y-Sc alloy and Al-Y-Sc alloy

An al-y-sc, corrosion-resistant technology, applied in the field of aluminum alloy preparation, can solve the problems of insufficient basic research and difficult performance, and achieve the goal of improving thermal stability and heat resistance, improving weldability, and improving fracture toughness. Effect

Inactive Publication Date: 2021-02-02
GUANGXI UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, with the advancement of science and technology in recent years, the performance of aluminum alloy profiles has become more and more difficult to meet the needs of existing industrial production and deep space exploration. At the same time, although my country's aluminum alloy research has made great progress, it is still difficult to rank among In the forefront of the world, the country's basic research on the strengthening and toughening theory and corrosion theory of 7055 alloy is not deep enough

Method used

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  • Preparation method of high-strength and corrosion-resistant Al-Y-Sc alloy and Al-Y-Sc alloy
  • Preparation method of high-strength and corrosion-resistant Al-Y-Sc alloy and Al-Y-Sc alloy
  • Preparation method of high-strength and corrosion-resistant Al-Y-Sc alloy and Al-Y-Sc alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0038] A preparation method of a high-strength corrosion-resistant Al-Y-Sc alloy, comprising the following steps:

[0039] S1: Preparation of alloy ingot: Prepare 500g of raw materials according to the following mass percentages: Components in mass percentages: Sc0.01%, Cu 2.0%, Mg 1.8%, Y 0.25%, Zn 7.6%, Fe 0.15%, Cr 0.04%, Ti 0.06%, Mn 0.05%, Zr 0.08%, and the balance is Al; Cu, Sc, Zr, Y, Fe, Cr, Ti, Mn are made into master alloys with Al respectively, and the mass ratio is 7:3. Mg is divided into two parts, and the master alloys Al-Cu, Al-Sc, Al-Zr, Al-Y, Al-Fe, Al-Cr, Al-Ti, Al-Mn are smelted with pure Zn and high-purity Al. Wrap the first part of Mg with aluminum foil, cover it with a bell jar and press it into the bottom of the melt, take out the bell jar after it is completely melted, add 1g of Al-Ti-B grain refiner after the furnace charge is completely melted, and let it stand for 10 minutes Add 10g of hexachloroethane for degassing once; then wrap the second Mg wit...

Embodiment 2

[0042] A preparation method of a high-strength corrosion-resistant Al-Y-Sc alloy, comprising the following steps:

[0043] S1: Preparation of alloy ingot: Prepare 500g of raw materials according to the following mass percentages: Components in mass percentages: Sc0.25%, Cu 2.3%, Mg 2.0%, Y 0.25%, Zn 8.0%, Fe 0.15%, Cr 0.04%, Ti 0.06%, Mn0.05%, Zr 0.15%, and the balance is Al; Cu, Sc, Zr, Y, Fe, Cr, Ti, Mn are made into master alloys with Al respectively, and the mass ratio is 7:3. Mg is divided into two parts, and the master alloys Al-Cu, Al-Sc, Al-Zr, Al-Y, Al-Fe, Al-Cr, Al-Ti, Al-Mn are smelted with pure Zn and high-purity Al. Wrap the first part of Mg with aluminum foil, cover it with a bell jar and press it into the bottom of the melt, take out the bell jar after it is completely melted, add 2g of Al-Ti-B grain refiner after the furnace charge is completely melted, and then let it stand Add 20g of hexachloroethane in 15 minutes for degassing; then wrap the second part of ...

Embodiment 3

[0046] A preparation method of a high-strength corrosion-resistant Al-Y-Sc alloy, comprising the following steps:

[0047] S1: Preparation of alloy ingot: Prepare 500g of raw materials according to the following mass percentages: Components in mass percentages: Sc0.35%, Cu 2.6%, Mg 2.3%, Y 0.25%, Zn 8.4%, Fe 0.15%, Cr 0.04%, Ti 0.06%, Mn 0.05%, Zr 0.25%, the balance is Al; Cu, Sc, Zr, Y, Fe, Cr, Ti, Mn are made with Al respectively, and Mg is divided according to the mass ratio of 7:3 In two parts, the master alloys Al-Cu, Al-Sc, Al-Zr, Al-Y, Al-Fe, Al-Cr, Al-Ti, Al-Mn were smelted with pure Zn and high-purity Al, and the second Wrap a piece of Mg with aluminum foil, cover it with a bell jar and press it into the bottom of the melt, take out the bell jar after it is completely melted, add 3g of Al-Ti-B grain refiner after the furnace charge is completely melted, and let it stand for 10-20min Add 30g of hexachloroethane for one degassing; then wrap the second part of Mg with a...

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Abstract

The invention discloses a preparation method of a high-strength and corrosion-resistant Al-Y-Sc alloy and the Al-Y-Sc alloy. The preparation method includes the following steps that S1, an alloy castingot is prepared, specifically, intermediate alloys are prepared from Cu, Sc, Zr, Y, Fe, Cr, Ti Mn and Al, Mg is divided into two parts, the intermediate alloys Al-Cu, Al-Sc, Al-Zr, Al-Y, Al-Fe, Al-Cr, Al-Ti and Al-Mn, pure Zn and high-purity Al are smelted, and then a first part of Mg, an Al-Ti-B grain refiner, hexachloroethane and a second part of Mg are sequentially added; casting is performedto obtain the alloy cast ingot; and S2, the alloy cast ingot is sequentially subjected to homogenization treatment, solid solution treatment, quenching, pre-aging, regression and re-aging treatment,and the high-strength and corrosion-resistant aluminum alloy is obtained. The prepared aluminum alloy is high in strength, good in toughness, excellent in heat stability and fatigue resistance and long in service life.

Description

technical field [0001] The invention belongs to the technical field of aluminum alloy preparation, and in particular relates to a preparation method of a high-strength corrosion-resistant Al-Y-Sc alloy and the Al-Y-Sc alloy. Background technique [0002] 7055 belongs to the Al-Zn-Mg-Cu series heat-treatable and strengthened wrought aluminum alloy. It has high specific strength, good hot workability, excellent welding performance and other characteristics. It can be used to produce thick plates, profiles, forgings and other products. , Has been widely used in aviation, navigation, construction packaging and chemical fields. However, with the advancement of science and technology in recent years, the performance of aluminum alloy profiles has become more and more difficult to meet the needs of existing industrial production and deep space exploration. At the same time, although my country's aluminum alloy research has made great progress, it is still difficult to rank among In...

Claims

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Application Information

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IPC IPC(8): C22C1/02C22C21/10C22F1/053
CPCC22C1/026C22C21/10C22F1/053
Inventor 冯琴黄锴韦悦周
Owner GUANGXI UNIV
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