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Die and method for regulating and controlling formability of magnesium alloy plate through gradient strain

A sheet forming and magnesium alloy technology, which is applied in the field of magnesium alloy processing, can solve the problems of weakened texture and low formability of magnesium alloy sheets, and achieve the effect of improving sheet formability

Active Publication Date: 2019-06-28
CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] In order to solve the problem of low formability of existing commercial magnesium alloy sheets, the purpose of the present invention is to provide a mold and method for regulating the formability of magnesium alloy sheets by gradient strain, by designing compression gaskets with a certain angle to achieve gradient strain of magnesium alloy sheets , and then adjust the texture orientation of the magnesium alloy sheet, weaken the texture, and finally improve the formability of the sheet

Method used

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  • Die and method for regulating and controlling formability of magnesium alloy plate through gradient strain
  • Die and method for regulating and controlling formability of magnesium alloy plate through gradient strain

Examples

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Effect test

Embodiment 1

[0029] (1) Take an AZ31 magnesium alloy plate with a hypotenuse at an angle of 5° and a size of 100mm (width)×100mm (length)×1mm (thickness), and a gasket with an angle of 5° at the hypotenuse, place the magnesium alloy plate on Homogenized annealing treatment at 300°C for 60 minutes, then place the gasket and magnesium alloy plate along the inclined sheet in the strain area of ​​the mold; then place the mold on a hydraulic or electronic universal testing machine

[0030] (2) Adjust the fastening bolt 7, the splint 3 makes the support block 8 evenly squeeze the plate B12 to move to the plate A11 through the elastic support piece 5 to fix the gasket 2 and the magnesium alloy plate 4; through the hydraulic or electronic universal testing machine along the parallel The length direction of the magnesium alloy plate is pre-deformed and compressed, and the deformation rate is 0.1mm / s;

[0031] (3) The deformed and compressed magnesium alloy sheet is kept at 300°C for 90 minutes to c...

Embodiment 2

[0036] (1) Take an AZ31 magnesium alloy plate with a hypotenuse at an angle of 10° and a size of 100mm (width)×100mm (length)×1mm (thickness), and a gasket with an angle of 10° at the hypotenuse, place the magnesium alloy plate on Homogenized annealing treatment at 300°C for 60 minutes, then place the gasket and magnesium alloy plate along the inclined sheet in the strain area of ​​the mold; then place the mold on a hydraulic or electronic universal testing machine.

[0037] (2) Adjust the fastening bolt 7, the splint 3 makes the support block 8 evenly squeeze the plate B12 to move to the plate A11 through the elastic support piece 5 to fix the gasket 2 and the magnesium alloy plate 4; through the hydraulic or electronic universal testing machine along the parallel The length direction of the magnesium alloy plate is pre-deformed and compressed, and the deformation rate is 1mm / s;

[0038] (3) The deformed and compressed magnesium alloy sheet is kept at 300°C for 120 minutes to...

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Abstract

The invention discloses a die and method for regulating and controlling formability of a magnesium alloy plate through gradient strain. The die comprises a fixing plate and a clamping plate, wherein the fixing plate is connected with the clamping plate through a connecting plate; the fixing plate consists of a plate A and a plate B, wherein the plate A is fixed with the connecting plate, and the plate B can freely slide along the connecting plate; a strain area for storing a gasket and the magnesium alloy plate is arranged between the plate A and the plate B; the gasket and the magnesium alloyplate are both provided with inclined edges with an angle theta; the gasket and the magnesium alloy plate are superposed along the inclined edges; and the clamping plate is provided with fastening bolts for enabling the clamping plate to press the plate B to move towards the plate A so as to fix the gasket and the magnesium alloy plate. According to the die and the method, the gradient strain ofthe magnesium alloy plate is achieved by designing the compression gasket with a certain angle, so that the texture orientation of the magnesium alloy plate is further regulated and controlled, the texture is weakened, and finally, the formability of the magnesium alloy plate is improved.

Description

technical field [0001] The invention belongs to the technical field of magnesium alloy processing, and in particular relates to a tool and a method for regulating the formability of a magnesium alloy plate by gradient strain. Background technique [0002] Magnesium alloy, as the lightest metal structural material currently used in practical applications, is widely used in aerospace, transportation, and 3C electronic products. Due to its hexagonal close-packed structure (HCP), magnesium alloys often exhibit poor room-temperature mechanical properties and plastic formability, especially stamping properties. The room-temperature cupping value (IE) of commercial AZ31 magnesium alloy sheets is only about 3mm, which severely limits Promotion and use of magnesium alloy products. Contents of the invention [0003] In order to solve the problem of low formability of existing commercial magnesium alloy sheets, the purpose of the present invention is to provide a mold and method for...

Claims

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Application Information

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IPC IPC(8): B21D37/10B21D37/16B21D22/02C22F1/06C21D9/00
Inventor 杨青山宋波潘虎成戴甲洪柴森森肖媛丹何德威
Owner CHONGQING UNIVERSITY OF SCIENCE AND TECHNOLOGY
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