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Aluminum matrix composite plate rolling method

A technology of aluminum-based composite materials and plates, which is applied in the direction of metal rolling, roll speed control, temperature control, etc., can solve the problems affecting mechanics and corrosion resistance, and the lack of basis for the control of composite material plate properties, so as to achieve the reduction of rolling Temperature range, excellent original quality, effect of improving material properties

Active Publication Date: 2017-02-22
中科复材(滨州)新材料有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For composite materials, the reinforcing phase will affect the microstructural characteristics such as the dislocation density in the matrix after final rolling, so the influence of final rolling conditions on factors such as grain size and second phase distribution formed during subsequent heat treatment is much greater than that of unreinforced aluminum alloys. It is more significant, thus affecting the mechanics and corrosion resistance, but previous research reports rarely pay attention to this, so there is no basis for the control of composite sheet properties

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] SiC particles with an average particle diameter of 10 μm are blended with 2009Al powder, and the volume content of SiC particles is 20% to prepare a large thickness plate. Proceed as follows:

[0030] (1) Use vacuum hot pressing or hot isostatic pressing to make billets with a density of 99% to 100%, a billet diameter of 450mm and a height of 650mm.

[0031] (2) Use a 2000-ton hydraulic press to freely upset the billet to 260mm in the axial direction, square the billet in the radial direction, and machine it into a 500×800×250mm square slab.

[0032] (3) The slab is kept at 470℃ for 4h, and the billet is taken out along the 500mm direction, the billet deformation rate is 10-20%, and the rolling speed is 60m·min -1 . The thickness is reduced from 250mm to 220mm.

[0033] (4) After the billet, the plate is reheated to 350℃ and kept for 1h, then taken out and rolled along the billeting direction at a rolling speed of 50m·min -1 , The thickness reduction of each pass is 30%. After...

Embodiment 2

[0038] SiC particles with an average particle size of 1.5 μm are blended with 6092Al powder, and the SiC particle volume content is 25% to prepare a wide sheet. Proceed as follows:

[0039] (1) Use vacuum hot pressing or hot isostatic pressing to make billets with a density of 99% to 100%, a billet diameter of 200mm and a height of 150mm.

[0040] (2) Use an 800-ton hydraulic press to freely upset the billet to 55mm in the axial direction, square the billet in the radial direction, and machine it into a 500×188×50mm square slab.

[0041] (3) The slab is kept at 480℃ for 2h, and the billet is taken out along the 188mm direction, the billet deformation rate is 10-20%, and the rolling speed is 60m·min -1 . The thickness is reduced from 50mm to 45mm.

[0042] (4) After the billeting, the plate is reheated to 360℃ for 2h, and then taken out and rolled along the billeting direction at a rolling speed of 50m·min -1 , The thickness reduction of each pass is 30%. After 3 passes, it is rolled ...

Embodiment 3

[0049] Using B with an average particle size of 5μm 4 Blending of C particles and 6063Al powder, B 4 The volume content of C particles is 35%, and a wide sheet is prepared. Proceed as follows:

[0050] (1) Use vacuum hot pressing or hot isostatic pressing to make billets with a density of 99% to 100%, a billet diameter of 160mm and a height of 200mm.

[0051] (2) Use an 800-ton hydraulic press to freely upset the billet to 52mm in the axial direction, square the billet in the radial direction, and machine it into a square slab of 420×190×50mm.

[0052] (3) The slab is kept at 460℃ for 1h, and the billet is taken out along the 190mm direction, the billet deformation rate is 10-20%, and the rolling speed is 60m·min -1 . The thickness is reduced from 50mm to 42mm.

[0053] (4) After billeting, reheat the plate to 360℃ for 0.5h, take it out and roll it along the billeting direction at a rolling speed of 45m·min -1 , The thickness reduction of each pass is 30%. After 10 passes, it is roll...

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Abstract

The invention discloses an aluminum matrix composite plate rolling method and belongs to the field of metal matrix composite molding machining. According to the method, on the basis that the density of a composite billet used for rolling is regulated, a plate blank is manufactured through multidirectional free forging and extruding, and the thickness of a rolled plate is 1-150 mm; sectional temperature rolling is adopted, cogging and reversing rolling are both conducted in a recrystallization temperature region so as to avoid detects generated in subsequent rolling, the rest of passes are subjected to large deformation rolling at a dynamic recovery temperature, and the rolling efficiency is improved; the regions of the rolling temperature and the rolling speed are narrowed so that organization can be precisely controlled and detects can be avoided; and medium and low temperature finish rolling is adopted so as to ensure the plate performance. In this way, the manufactured aluminum matrix composite plate has high strength and good corrosion resistance and fatigue resistance, and efficient rolling of large-size plates can be achieved.

Description

Technical field [0001] The invention relates to the technical field of forming and processing of metal-based composite materials, in particular to a rolling method of aluminum-based composite material plates. Background technique [0002] Aluminum-based composites are solid-phase materials formed by adding ceramics, fibers, carbon nanotubes and other high-performance reinforcing phases to the aluminum alloy matrix with good plasticity. It has the characteristics of high strength and high modulus, corrosion resistance, fatigue resistance, and radiation resistance. It has broad application prospects in the fields of aerospace, nuclear industry, transportation and national defense. In particular, the use of SiC-reinforced aluminum-based composite sheets in the aerospace field to replace traditional metal materials improves the stiffness and fatigue resistance of parts; the nuclear power field uses B 4 C-reinforced aluminum-based composite material plate, replacing traditional boron-c...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B21C37/02B21B1/38B21B37/46B21B3/00B21B37/74
CPCB21B1/38B21B3/00B21B37/46B21B37/74B21C37/02
Inventor 肖伯律马宗义王全兆王东倪丁瑞
Owner 中科复材(滨州)新材料有限公司
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