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High-strength cast aluminium alloy material

A casting aluminum alloy, high-strength technology, applied in the field of aluminum alloy materials, can solve problems such as poor castability, high-cost formula, poor stress corrosion resistance, etc., to achieve the effect of breaking the technical bottleneck and reducing the cost of formula

Inactive Publication Date: 2008-12-10
GUIZHOU UNIV +2
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0005] The technical problem to be solved by the present invention is aimed at technical problems such as high-cost formula existing in the field of high-strength cast aluminum alloy, low strength, poor castability, short fatigue life, and poor stress corrosion resistance. and other processes, developed a high-strength, high-toughness, high-corrosion-resistant cast aluminum alloy material for military and civilian purposes

Method used

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  • High-strength cast aluminium alloy material

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Embodiment

[0024] Embodiment: by weight percentage, the alloy composition is Cu2.0~6.0%, Mn0.05~1.0%, Ti0.01~0.5%, Cr0.01~0.2%, Cd0.01~0.4%, Zr0.01 ~0.25%, B0.005~0.04%, Pr0.05~0.3%, and the rest are Al and trace impurity elements.

[0025] (1) Add an appropriate amount of aluminum ingot or molten aluminum into the melting furnace, heat it to melt it completely and keep it warm at 660-850°C;

[0026] (2) Add Cu and Mn alloy elements according to the formula ratio and stir evenly, then add Ti, Cr, Cd, Zr, B, Pr trace elements, and stir evenly;

[0027] (3) Then carry out in-furnace refining to above-mentioned alloy melt; Add refining agent (can adopt chlorine, hexachloroethane, manganese chloride etc. as refining agent according to different working conditions) in alloy melt, and stir evenly, simultaneously In order to prevent the melt from absorbing moisture and burning, melt refining should be operated in a closed environment as much as possible;

[0028] (4) The alloy liquid is poure...

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Abstract

The invention discloses a high strength casting aluminum alloy material. The alloy comprises the following compositions in weight percent: 2.0 to 6.0 percent of Cu, 0.05 to 1.0 percent of Mn, 0.01 to 0.5 percent of Ti, 0.01 to 0.2 percent of Cr, 0.01 to 0.4 percent of Cd, 0.01 to 0.25 percent of Zr, 0.005 to 0.04 percent of B, 0.05 to 0.3 percent of Pr, the balance being Al and trace impurity elements. The invention adopts the advanced alloy composition design and the micro alloying design. Based on taking Al-Cu-Mn as main compositions, the material finds reasonable micro alloy elements (Ti, Cr, B, Zr and rare earth, etc.), determines the ranges of compositions of the micro alloy elements, is capable of realizing the function of replacing precious and rare metals such as Ag and V, etc., and lowers the formula cost by 5 to 10 percent.

Description

technical field [0001] The invention relates to an aluminum alloy material, in particular to a high-strength cast aluminum alloy material. 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 a large amount and in a wide range, second only to steel, and has become the second largest metal material...

Claims

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Application Information

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IPC IPC(8): C22C21/12
Inventor 张德恩卢锦德车云张中可张晓燕燕光谱
Owner GUIZHOU UNIV
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