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Compound 6013-type aluminum alloy microalloyed by zirconium and strontium and preparation method thereof

A technology of microalloying and aluminum alloys, which is applied in the field of new 6000 series aluminum alloys and its preparation, zirconium and strontium composite microalloyed 6013 aluminum alloys and its preparation fields, can solve the problems of restricting development and dependence on imports, and achieve Good corrosion resistance, broad application prospects, high hardness effect

Active Publication Date: 2010-08-11
NANTONG JIANGZHONG PHOTOELECTRIC
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Problems solved by technology

[0004] However, so far, my country has not yet had a 6013 aluminum alloy with independent intellectual property rights available for use, and has long relied on imports, which has restricted the development of my country's aerospace, weaponry and other industries to a certain extent.

Method used

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  • Compound 6013-type aluminum alloy microalloyed by zirconium and strontium and preparation method thereof
  • Compound 6013-type aluminum alloy microalloyed by zirconium and strontium and preparation method thereof
  • Compound 6013-type aluminum alloy microalloyed by zirconium and strontium and preparation method thereof

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Embodiment 1

[0025] Such as figure 1 , 2 , 3, 4 shown.

[0026] A zirconium and strontium composite microalloyed 6013 aluminum alloy, its preparation method:

[0027] Take 53kg aluminum alloy as an example.

[0028] First, 39.89kg of A00 grade pure Al (composition: 99.79% Al, 0.14% Fe, 0.04% Si, all components of the present invention are represented by mass percentage, the same below) is added successively after melting 1.04kg of Al-Cu master alloy (49.62% Al, 50.12% Cu, 0.15% Fe, 0.11% Si) (Cu loss rate is about 6.25%), 5.57kg Al-Si master alloy (89.62% Al, 10.21% Si, 0.17% Fe) (Si loss rate About 5%), 3.26kg Al-Mn master alloy (89.73% Al, 10.02% Mn, 0.19% Fe, 0.06% Si) (the loss rate of Mn is about 10%), 1.70kg Al-Zr master alloy (95.69 %Al, 4.11%Zr, 0.20%Fe, 0.10%Si) (the loss rate of Zr is about 8%), 0.59kgAl-Sr master alloy (89.85%Al, 9.89%Sr, 0.16%Fe, 0.10%Si) ( The loss rate of Sr is about 75%), 0.05kg pure Zn (the loss rate of Zn is about 8%), 0.90kg pure Mg (the loss rate of...

Embodiment 2

[0033] A zirconium and strontium composite microalloyed 6013 aluminum alloy, its preparation method:

[0034] Take 53kg aluminum alloy as an example.

[0035] First melt 40.52kg A00 grade pure Al (composition: 99.79% Al, 0.14% Fe, 0.04% Si) and then add 1.17kg Al-Cu master alloy (49.62% Al, 50.12% Cu, 0.15% Fe, 0.11% Si) (Cu loss rate is about 6.25%), 4.92kg Al-Si master alloy (89.62% Al, 10.21% Si, 0.17% Fe) (Si loss rate is about 5%), 3.88kg Al-Mn master alloy ( 89.73% Al, 10.02% Mn, 0.19% Fe, 0.06% Si) (the loss rate of Mn is about 10%), 1.28kg Al-Zr master alloy (95.69% Al, 4.11% Zr, 0.20% Fe, 0.10% Si ) (the loss rate of Zr is about 8%), 0.34kg Al-Sr master alloy (89.85% Al, 9.89% Sr, 0.16% Fe, 0.10% Si) (the loss rate of Sr is about 75%), 0.08kg pure Zn (the loss rate of Zn is about 8%), 0.81kg pure Mg (the loss rate of Mg is about 20%). After one master alloy or metal is melted, add the latter master alloy or metal. After all of them are melted into the aluminum solu...

Embodiment 3

[0040] A zirconium and strontium composite microalloyed 6013 aluminum alloy, its preparation method:

[0041] Take 53kg aluminum alloy as an example.

[0042] First melt 40.01kg A00 grade pure Al (composition: 99.79% Al, 0.14% Fe, 0.04% Si) and then add 0.91kg Al-Cu master alloy (49.62% Al, 50.12% Cu, 0.15% Fe, 0.11% Si) (Cu loss rate is about 6.25%), 6.28kg Al-Si master alloy (89.62% Al, 10.21% Si, 0.17% Fe) (Si loss rate is about 5%), 2.65kg Al-Mn master alloy ( 89.73% Al, 10.02% Mn, 0.19% Fe, 0.06% Si) (the loss rate of Mn is about 10%), 1.28kg Al-Zr master alloy (95.69% Al, 4.11% Zr, 0.20% Fe, 0.10% Si ) (the loss rate of Zr is about 8%), 0.84kg Al-Sr master alloy (89.85% Al, 9.89% Sr, 0.16% Fe, 0.10% Si) (the loss rate of Sr is about 75%), 0.02kg pure Zn (the loss rate of Zn is about 8%), 1.01kg pure Mg (the loss rate of Mg is about 20%). After one master alloy or metal is melted, add the latter master alloy or metal. After all of them are melted into the aluminum solu...

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Abstract

The invention discloses a 6013-type aluminum alloy microalloyed by zirconium and strontium, which mainly comprises Al, 1.22% to 1.52% of Mg, 0.90% to 1.15% of Si, 0.804% to 1.04% of Cu, 0.451% to 0.661% of Mn, 0.0311% to 0.135% of Zn, 0.0915% to 0.135% of Zr and 0.0157% to 0.0391% of Sr. The preparation method of the alloy comprises the steps of: melting pure Al; sequentially adding Al-Cu intermediate alloy, Al-Si intermediate alloy, Al-Mn intermediate alloy, Al-Zr intermediate alloy, Al-Sr intermediate alloy, pure Zn and pure Mn; melting and adding hexachloroethane for refining; standing and keeping the temperature for 5 to 10 minutes; removing residues; casting into ingots; and treating the cast ingots. The hardness of the alloy reaches 156.0 to 159.1 HV; the performance of resisting intergranular corrosion is in fourth level; and the performance of resisting exfoliation corrosion is not less than PB level. The alloy can be widely applied to the fields of modern aerospace, weaponry and the like, and has wide application prospect.

Description

technical field [0001] The invention relates to an aluminum alloy and a preparation method thereof, in particular to a novel 6000-series aluminum alloy and a preparation method thereof, in particular to a zirconium-strontium composite microalloyed 6013 aluminum alloy and a preparation method thereof. Background technique [0002] In recent years, the world's commercial aircraft production has increased, military aircraft has been updated, my country's large aircraft project has started, rail transit has entered a development period, and the demand for high-end aluminum alloys has increased significantly. The 6013 or 6056 (similar composition and performance, developed by different companies) aluminum alloy of the 6000 series is an aluminum alloy with good comprehensive properties. It has medium strength, good formability (casting performance, plastic formability, weldability) and corrosion resistance. Compared with 6061 aluminum alloy, its strength and strength are more than...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/08C22C1/03C22F1/047
Inventor 许晓静赵梓皓成城朱新董王宏宇宋涛宗亮吴桂潮王彬程晓农
Owner NANTONG JIANGZHONG PHOTOELECTRIC
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