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Die and method for controlling formability of magnesium alloy sheet by gradient strain

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

Active Publication Date: 2021-04-16
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 controlling formability of magnesium alloy sheet by gradient strain
  • Die and method for controlling formability of magnesium alloy sheet by gradient strain

Examples

Experimental program
Comparison scheme
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 hypotenuse and place them 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 towards the plate A1 through the elastic support piece 5 to fix the gasket 2 and the mold 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 m...

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 the magnesium alloy plate along the hypotenuse and place them 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 press the plate B12 to move towards the plate A1 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 lmm / s;

[0038] (3) After deformation and compression, the magnesium alloy sheet is subj...

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Abstract

The invention discloses a mold for regulating the formability of a magnesium alloy plate by gradient strain. The mold includes a fixed plate and a splint, and the fixed plate and the splint are connected by a connecting plate; the fixed plate is composed of a plate A and a plate B. , wherein plate A is fixed to the connecting plate, and plate B can slide freely along the connecting plate; there is a strain area for placing gaskets and magnesium alloy plates between plate A and plate B; the gaskets and magnesium alloy plates have a The angle θ-shaped hypotenuse, the gasket and the magnesium alloy plate are superimposed and placed along the inclined piece, and the splint is provided with fastening bolts for moving the splint pressing plate B to plate A to fix the gasket and the magnesium alloy plate. The invention also discloses a method for regulating the formability of magnesium alloy sheets by gradient strain. The gradient strain of magnesium alloy sheets is realized by designing compression gaskets with a certain angle, and then the texture orientation of magnesium alloy sheets is adjusted, the texture is weakened, and the final improvement is achieved. Formability of magnesium alloy sheets.

Description

technical field [0001] The invention belongs to the technical field of 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] Chopsticks alloy, as the lightest metal structural material currently in practical use, is widely used in aerospace, transportation, and 3C electronic products. Due to its hexagonal close-packed structure (HCP), reading alloys often show 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 gold-containing magnesium 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 regulating the fo...

Claims

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Application Information

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Patent Type & Authority Patents(China)
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