Aluminum-based composite material preparing method
An aluminum-based composite material and aluminum powder technology, applied in the field of aluminum-based composite materials, can solve the problems of poor fluffy effect, poor bonding strength, long preparation period, etc., and achieve the effects of fluffy particle size, improved conversion rate, and good dispersibility.
Inactive Publication Date: 2019-12-20
CENT SOUTH UNIV
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Problems solved by technology
[0003] Among them, since the existing aluminum-based composite materials mostly use a variety of reinforcements, which are added to the aluminum-based alloy powder in any proportion, this causes many problems in the prepared aluminum-based alloy powder, such as: bonding strength Large particle size, poor fluffy effect, etc.
[0004] At the same time, the existing aluminum-based composite materials have a long preparation period, complicated procedures, and poor performance of the prepared materials.
Method used
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Experimental program
Comparison scheme
Effect test
Embodiment
[0023] Aluminum powder with a particle size of 2 μm and silicon carbide powder are mixed at a ratio of 5:1, and high-energy ball milling is carried out at 100 r / min and a ball-to-material ratio of 1:5.
[0024] Heat treatment: pre-press after heating the obtained aluminum powder to 450°C.
[0025] Pre-compression: Put the heat-treated material into the extrusion device and pre-compress it. The pre-compression pressure is 1000MPa.
[0026] Extrusion: Extrude the pre-pressed material to cause plastic deformation and rapid sintering and solidification. The extrusion ratio is 1:50 to obtain a green body.
[0027] Sinter the green body at 600°C by hot isostatic pressing.
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Abstract
The invention provides an aluminum-based composite material preparing method which comprises the following steps that after aluminum powder and inorganic non-metal powder are mixed, high-energy ball milling is carried out for obtaining aluminum powder where nanometer hard alloy particles are embedded; then heat treatment, prepressing and post-extrusion are carried out to form a green body; and sintering and curing are carried out to obtain an aluminum-based composite material.
Description
technical field [0001] The invention belongs to the technical field of aluminum-based composite materials, and in particular relates to a preparation method of aluminum-based composite materials. Background technique [0002] Aluminum matrix composites are a heterogeneous mixture of metallic aluminum and other alloys as the matrix, and metal, non-metallic particles, whiskers or fibers as reinforcements. It has a very wide range of applications in the fields of aerospace and industrial lighting. [0003] Among them, since the existing aluminum-based composite materials mostly use a variety of reinforcements, which are added to the aluminum-based alloy powder in any proportion, this causes many problems in the prepared aluminum-based alloy powder, such as: bonding strength Poor particle size is larger, fluffy effect is poor, etc. [0004] At the same time, the existing aluminum-based composite materials have a long preparation cycle and complicated procedures, and the proper...
Claims
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IPC IPC(8): C22C1/05C22C21/00C22C32/00
CPCC22C1/05C22C21/00C22C32/0063
Inventor 刘芳洋蒋良兴陈晨贾明
Owner CENT SOUTH UNIV