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Cold-rolling method of magnesium alloy deformation material with non/weak-basal texture and cold-rolled sheet obtained thereby

A magnesium alloy and texture technology, which is applied to the cold rolling method of non/weak base surface textured magnesium alloy deformed materials and the field of cold rolled plates, can solve the problem that the product size is easy to exceed the tolerance range, the thickness cannot be obtained, small thin plates or Foil and other issues, to achieve the effect of weakened strength, increased strength, and fine grain size

Active Publication Date: 2011-11-16
INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] Aiming at the disadvantages in the prior art that the magnesium alloy deformed material with non / weak base surface texture has low strength, poor surface quality, product size is easy to exceed the tolerance range, thin plate or foil with small thickness cannot be obtained, and single use, etc., this paper The invention provides a cold rolling method of magnesium alloy deformed material with non / weak base surface texture. Compared with the original magnesium alloy deformed material blank with non (weak) base surface texture, the cold rolling method provided by the invention can be The strength can be increased by more than 15%; after cold rolling, proper annealing treatment can ensure that the strength can be increased by more than 10%, and the rolling elongation of the plate δ≥25%

Method used

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  • Cold-rolling method of magnesium alloy deformation material with non/weak-basal texture and cold-rolled sheet obtained thereby
  • Cold-rolling method of magnesium alloy deformation material with non/weak-basal texture and cold-rolled sheet obtained thereby
  • Cold-rolling method of magnesium alloy deformation material with non/weak-basal texture and cold-rolled sheet obtained thereby

Examples

Experimental program
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Effect test

Embodiment 1

[0031] 1) A hot-rolled Mg-3Gd-Zn plate with a thickness of 3mm is used. The weight percentage of the alloy composition is Gd: 2.8%, Zn: 1.1%, and the magnesium content is the balance margin, abbreviated as GZ31; the elongation of the plate along the rolling direction The length δ≈35%. As shown in Figure 3(a), the grain size is ~20μm; as shown in Figure 2(a), the plane formed by the selected rolling direction (RD) and plate transverse direction (TD) is selected as the plane of the sample coordinate system; as attached Figure 4 As shown in (a), the maximum pole density value in the (0002) pole figure is 1.80, which shows that the magnesium alloy deformed material belongs to the weak base texture; the selected sample coordinate system plane is the weak base texture plane.

[0032] 2) Cut the GZ31 hot-rolled sheet into 40mm×25mm×3mm samples, and polish the surface with water sandpaper to 800#; start rolling at room temperature (~25°C), and the rolling plane is the weak base textu...

Embodiment 2

[0036] 1) A hot-rolled Mg-3Gd-Zn plate with a thickness of 3mm is used. The weight percentage of the alloy composition is Gd: 2.8%, Zn: 1.1%, and the magnesium content is the balance margin, abbreviated as GZ31; the elongation of the plate along the rolling direction The length δ≈35%. As shown in Figure 3(a), the grain size is ~20μm; as shown in Figure 2(a), the plane formed by the selected rolling direction (RD) and plate transverse direction (TD) is selected as the plane of the sample coordinate system; as attached Figure 4 As shown in (a), the maximum pole density value in the (0002) pole figure is 1.80, which shows that the magnesium alloy deformed material belongs to the weak base texture; the selected sample coordinate system plane is the weak base texture plane.

[0037] 2) Cut the GZ31 hot-rolled sheet into 40mm×25mm×3mm samples, and sand it with water sandpaper to 800#; start rolling at room temperature (~25°C), and the rolling plane is the weak base texture plane of...

Embodiment 3

[0041] 1) A hot-rolled Mg-2Zn-Y plate with a thickness of 3mm is used, the alloy composition weight percentage is Zn: 1.9%, Y: 1.1%, and the magnesium content is the balance balance; the grain size is ~15μm; the billet rolling plate surface The transverse yield strength is 122MPa, the tensile strength is 225MPa, and the elongation δ≈26%. The plane formed by the selected rolling direction (RD) and the plate transverse direction (TD) is the plane of the sample coordinate system, and the position of the maximum pole density in the (0002) polar diagram deviates from the normal direction of the sample coordinate system plane by 28°, which shows that it belongs to the non-basal plane texture. The magnesium alloy deformed material with texture; the selected sample coordinate system plane is the non-basal texture plane.

[0042] 2) Cut the Mg-2Zn-Y hot-rolled sheet into 40mm×25mm×3mm samples, and polish the surface with water sandpaper to 800#; start rolling at room temperature (~25°C...

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Abstract

The invention relates to the technical field of metal materials, and specifically relates to a cold-rolling method of a magnesium alloy deformation material with a non / weak-basal texture and a cold-rolled sheet obtained thereby. The cold-rolling method comprises the following steps: carrying out pre-treatment on a magnesium alloy deformation material blank with a non / weak-basal texture, and then carrying out cold-rolling processing, wherein the non / weak-basal texture plane of the blank is selected as the rolling plane during cold rolling, the rolling direction is parallel to the plane, and the blank is cold-rolled at room temperature into a sheet or foil with a thickness of 0.1-100 mm by single-pass or multiple-pass cold rolling; and annealing the sheet or foil after cold rolling at the annealing temperature of 200-400 DEG C for 10 minutes to 48 hours. Compared with the Mg-RE-Zn magnesium alloy deformation material blank with a non / weak-basal texture for cold rolling, the strength of the cold-rolled sheet is increased by 15% or above, and the strength of the cold-rolled and annealed sheet can be ensured to be increased by not less than 10%. Simultaneously, the rolling-direction elongation rate delta of the sheet is greater than or equal to 25%.

Description

technical field [0001] The invention relates to the technical field of metal materials, in particular to a cold-rolling method for deformed magnesium alloy materials with non / weak base surface texture and cold-rolled plates thereof. Background technique [0002] Compared with other structural materials such as metals, plastics and wood, magnesium and magnesium alloys have a series of advantages such as high specific strength, high specific stiffness, good vibration damping, strong electromagnetic shielding and radiation resistance, easy cutting and processing, and easy recycling. Automobiles, electronics and household appliances, household daily necessities, leisure and fitness equipment, bicycles, aerospace, aviation and national defense military industries are increasingly widely used, known as green engineering materials in the 21st century, and are expected to become the most used materials in the near future The third largest metal structural material after steel and al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22F1/06C21D1/26
CPCC22C23/04C22C23/06C22F1/06
Inventor 陈荣石吴迪韩恩厚柯伟
Owner INST OF METAL RESEARCH - CHINESE ACAD OF SCI
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