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High-strength cast aluminium alloy material

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

Inactive Publication Date: 2009-02-11
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

[0025] Embodiment: By weight percentage, the alloy composition is Cu 2.0-6.0%, Mn 0.05-1.0%, Ti 0.01-0.5%, Cr 0.01-0.2%, Cd 0.01-0.4%, Zr 0.01-0.25%, B 0.005 ~0.04%, RE 0.05~0.3%, and the rest are Al and trace impurity elements.

[0026] The mixed rare earth RE contains not less than 98% of the total amount of various rare earths, and the mixed rare earth RE contains 45% of cerium by weight percentage. (Since the ionic radii, oxidation states, and all other elements are similar, REEs often co-occur with other elements in minerals.)

[0027] (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;

[0028] (2) According to the proportion of the formula, first add Cu, Mn alloy elements and stir evenly, then add Ti, Cr, Cd, Zr, B, RE trace elements, and stir evenly;

[0029] (3) Then carry out in-furnace refining to above-mentioned alloy melt; Add refining agent (can adopt chlorine,...

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Abstract

The invention discloses a high-strength cast aluminum alloy material which comprises the following components by weight percentages: 2.0-6.0% of Cu, 0.05-1.0% of Mn, 0.01-0.5% of Ti, 0.01-0.2% of Cr, 0.01-0.4% of Cd, 0.01-0.25% of Zr, 0.005-0.04% of B, 0.05-0.3% of mixed rare earth RE, Al and microimpurity elements. The material adopts the advanced design of alloy components and the microalloying design. Based on the Al-Cu-Mn as the major components, rational microalloy elements (the Ti, the Cr, the B, the Zr, the mixed rare earth, etc.) are found and the ranges thereof are determined, which can realize the function of substituting the precious rare metals Ag, V, and the like, thus lowering the formula cost by 5-10%.

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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Patent Type & Authority Applications(China)
IPC IPC(8): C22C21/12
Inventor 卢锦德张德恩车云张中可张晓燕燕光谱
Owner GUIZHOU UNIV
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