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Laminar composite and preparation method thereof

A technology of layered composite materials and composite material plates, applied in the direction of metal layered products, chemical instruments and methods, lamination, etc., can solve the problems of difficult deformation and cracking of discontinuous reinforced aluminum matrix composite materials, and achieve significant social Benefits and economic benefits, simple process, and convenient operation

Inactive Publication Date: 2016-11-09
INNER MONGOLIA UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Bars and narrow plates of discontinuous reinforced aluminum matrix composites can be obtained by powder metallurgy, casting or extrusion, and some varieties and specifications have been applied, but the application of wide plates is rarely reported. Reinforced aluminum matrix composites are difficult to deform, and are easy to crack from the edge during the deformation process. Therefore, how to improve its deformation ability and crack propagation resistance is an urgent problem to be solved.
In the prior art, there are few reports on the preparation of three-layer laminated composite materials and their plates containing discontinuous body reinforced aluminum matrix composite material layers

Method used

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  • Laminar composite and preparation method thereof
  • Laminar composite and preparation method thereof
  • Laminar composite and preparation method thereof

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preparation example Construction

[0037] The embodiment of the present invention also provides a method for preparing the above-mentioned layered composite material. The layered composite material prepared by the method is prepared by extrusion compounding combined with rolling, wherein the extrusion compounding is made by discontinuous The body-reinforced aluminum matrix composite material plate utilizes deformed aluminum alloy bars located on both sides for bidirectional side extrusion. figure 2 It exemplarily shows a schematic flowchart of a method for preparing a layered composite material provided by an embodiment of the present invention. Such as figure 2 As shown, the preparation method of the layered composite material provided by the embodiment of the present invention specifically includes the following steps:

[0038] Step 101, pre-processing the discontinuous reinforced aluminum matrix composite material plate and the deformed aluminum alloy bar stock by extrusion compounding:

[0039] The pret...

Embodiment 1

[0057] A kind of three-layer metal laminated composite material (6061Al+discontinuity reinforced composite material (6061Al+10%SiC)+6061Al), its preparation method comprises the following steps:

[0058] (1) Billet pre-treatment: Prepare 6061 aluminum alloy rods and 6061Al+10% SiC composite material plates (thickness about 10-15mm), first homogenize these materials, and then homogenize the 6061Al+10% The SiC composite material plate is milled to remove surface defects and oxide layer, and the homogenized 6061Al bar is turned to remove surface defect and oxide layer.

[0059] (2) Preheat the mold to 380°C, preheat the 6061 aluminum alloy bar to 450°C, and preheat the 6061Al+10% SiC composite material plate to 450°C through an induction heating device.

[0060] (3) Send the preheated 6061Al+10% SiC composite material plate forward, and make its front end pass through the extrusion die hole, so that the 6061Al+10% SiC composite material plate can pass through the die hole smoothl...

Embodiment 2

[0065] A three-layer metal layered composite material (7075Al+discontinuous body reinforced composite material (7075Al+10%SiC)+1050Al), its preparation method comprises the following steps:

[0066] (1) Billet pre-treatment: Prepare 7075 aluminum alloy rods, 1050 aluminum alloy rods and 7075Al+10% SiC composite material plates (thickness about 10-15mm), first homogenize these materials, and then homogenize them The final 7075Al+10% SiC composite material plate is milled to remove surface defects and oxide layers, and the homogenized 7075 aluminum alloy rods and 1050 aluminum alloy rods are turned to remove surface defects and oxide scales;

[0067] (2) Preheat the mold to 380°C, preheat the 7075 aluminum rod to 430°C, preheat the 1050 aluminum rod to 400°C, and preheat the 7075Al+10% SiC composite material plate to 430°C through the induction heating device.

[0068] (3) Send the preheated 7075Al+10% SiC composite material plate forward, and make its front end pass through the...

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Abstract

The invention discloses a laminar composite, comprising a first wrought aluminum alloy, a non-continuum-reinforced aluminum-based composite layer and a second wrought aluminum alloy which contact with each other in sequence, wherein the non-continuum-reinforced aluminum-based composite layer is a coated middle layer. According to the preparation method, the three-layer laminar composite containing the non-continuum-reinforced aluminum-based composite layer is prepared through a combination of extrusion cladding and rolling, wherein the extrusion cladding refers to bidirectional side extrusion of the non-continuum-reinforced aluminum-based composite layer located at the middle by wrought aluminum alloy rods located at two sides. The laminar composite provided by the invention inherits the advantages of high specific strength, high specific rigidity and high modulus of a non-continuum-reinforced aluminum-based composite and the advantages of good fatigue resistance, fracture toughness and corrosion resistance of wrought aluminum alloy.

Description

technical field [0001] The invention relates to the technical field of composite materials, in particular to a layered composite material and a preparation method thereof. Background technique [0002] Compared with traditional aluminum alloys, discontinuous body reinforced aluminum matrix composites have high specific strength, specific stiffness, excellent high-temperature mechanical properties, low thermal expansion coefficient, and excellent wear resistance. Very broad application prospects. Bars and narrow plates of discontinuous reinforced aluminum matrix composites can be obtained by powder metallurgy, casting or extrusion, and some varieties and specifications have been applied, but the application of wide plates is rarely reported. Reinforced aluminum matrix composites are difficult to deform, and are easy to crack from the edge during deformation. Therefore, how to improve its deformation ability and crack propagation resistance is an urgent problem to be solved. ...

Claims

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Application Information

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IPC IPC(8): B32B15/01B32B15/20B21B1/38B32B37/06B32B37/10
CPCB21B1/38B32B15/016B32B37/06B32B37/10
Inventor 闫亮明刘玉浩刘慧敏樊伟杰孙志娟安迪
Owner INNER MONGOLIA UNIV OF TECH
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