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Porous aluminium alloy and its producing method

A manufacturing method and aluminum alloy technology, applied in the field of porous aluminum alloy and its manufacturing, can solve the problems of general strength and hardness, low thermal cracking tendency, low plastic toughness, etc., and achieve high normal temperature strength, improved machinability, and mechanical properties Improved effect

Inactive Publication Date: 2004-08-11
SOUTHEAST UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0002] At present, aluminum-silicon alloys with good fluidity are used, and porous aluminum alloys are prepared by percolation methods. This type of alloy has good fluidity, low thermal cracking tendency, less porosity, and high air tightness, but its strength and hardness are average. , low plastic toughness

Method used

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  • Porous aluminium alloy and its producing method
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  • Porous aluminium alloy and its producing method

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Embodiment 1

[0020] Embodiment 1: A kind of porous aluminum alloy related to aluminum alloy material, including aluminum and copper, wherein, copper accounts for 1%-11% (mass fraction) of the total amount of alloy, preferably copper is selected as copper accounts for the total amount of alloy The mass fraction is 4.5%-5.5%. The alloy also includes manganese accounting for 0.6%-1.0% of the total mass fraction of the alloy, including titanium accounting for 0.1%-0.3% of the total mass fraction of the alloy. The alloy includes Cadmium with a fraction of 0.1%-0.25%, including vanadium not greater than 0.4% of the total mass fraction of the alloy, boron not greater than 0.1% of the total alloy mass fraction, zirconium not greater than 0.3% of the total alloy mass fraction and not more than 0.3% of the total alloy mass fraction Rare earth with a mass fraction of 5%, specifically, copper can be selected to account for 1%, 3.5%, 4.5%, 5%, 5.5%, 7.8%, 10% or 11% of the total mass fraction of the all...

Embodiment 2

[0021] Embodiment 2: the present invention is made up of aluminum, copper, titanium and cadmium, copper and alloy total mass fraction 1%~11%, manganese accounts for 0.6%~1.0% of alloy total mass fraction, titanium accounts for alloy total mass fraction percentage of 0.1% to 0.3%, cadmium accounts for 0.1% to 0.25% of the total mass fraction of the alloy, and the rest is aluminum. Specifically, copper can be selected to account for 1%, 3.5%, 4.5%, and 5% of the total mass fraction of the alloy. %, 5.5%, 7.8%, 10% or 11%, manganese can be selected to account for 0.6%, 0.65%, 0.8%, 0.92% of the total mass fraction of the alloy and 1.0%, titanium can be selected to account for 0.1% of the total mass fraction of the alloy %, 0.15%, 0.2% or 0.3%, and cadmium can be selected to account for 0.1%, 0.125%, 0.2% or 0.25% of the total mass fraction of the alloy.

Embodiment 3

[0022] Example 3: A manufacturing method of a porous aluminum alloy used to manufacture porous aluminum alloys, the first step: placing the filled particles in the mold 1 for compaction and heating to 500°C-650°C for a heat preservation time of not less than 10 minutes; the filling particles can be soluble particles, such as: potassium phosphate, or insoluble particles such as glass balls; the second step: place the mold 1 on the suction cup base 2, and then pour the molten aluminum alloy into the mold inside, and the mold 1 is connected to the negative pressure device through the suction cup base 2. The negative pressure device can be composed of a mold, a suction cup base, a pump or other suction devices, so that the aluminum alloy can penetrate between the filling particles; the third step: wait for the aluminum After the alloy is solidified, take out the filler particle metal complex, remove the filler particles, and finally carry out solid solution aging. In the first step...

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Abstract

One porous aluminum alloy material containing copper in 1-11 wt% and its producing process are disclosed. The production process includes three steps, the first step of densifying stuffing particle inside a mold, heating to 500-650 deg.c and maintaining for at least 10 min; the second step of pouring molten aluminum alloy into the mold, which is set on one suction cup connected to a negative equipment, and making the aluminum alloy into the interval among the stuffing particles; and the third step of taking the metal composite with stuffing particles, eliminating the stuffing particles, solutionizing and aging. The said stuffing particle may be spherical one. The alloy of the present invention has high mechanical performance.

Description

1. Technical field: [0001] The invention relates to an aluminum alloy and a manufacturing method thereof, in particular to a porous aluminum alloy and a manufacturing method thereof. 2. Background technology: [0002] At present, aluminum-silicon alloys with good fluidity are used, and porous aluminum alloys are prepared by percolation methods. This type of alloy has good fluidity, low thermal cracking tendency, less porosity, and high air tightness, but its strength and hardness are average. , low plastic toughness. 3. Contents of the invention: [0003] Technical problem: The present invention provides a porous aluminum alloy capable of improving the mechanical properties of the aluminum alloy and its manufacturing method. [0004] Technical solution: The porous aluminum alloy related to the aluminum alloy material described in the present invention includes aluminum and copper, wherein copper accounts for 1%-12% (mass fraction) of the total amount of the alloy. [000...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/08C22C21/12
Inventor 何德坪王永进陈策杨东辉
Owner SOUTHEAST UNIV
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