CN105755411A - Method for weakening magnesium alloy plate texture - Google Patents

Method for weakening magnesium alloy plate texture Download PDF

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Publication number
CN105755411A
CN105755411A CN201610259728.5A CN201610259728A CN105755411A CN 105755411 A CN105755411 A CN 105755411A CN 201610259728 A CN201610259728 A CN 201610259728A CN 105755411 A CN105755411 A CN 105755411A
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China
Prior art keywords
magnesium alloy
alloy plate
roller
texture
deformation
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CN201610259728.5A
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CN105755411B (en
Inventor
杨青山
戴庆伟
喻祖建
毕雁
李建辉
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Chongqing University of Science and Technology
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Chongqing University of Science and Technology
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    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/06—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of magnesium or alloys based thereon
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
    • B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
    • B21C37/02—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of sheets

Abstract

The invention relates to a method for weakening magnesium alloy plate texture.The method includes the steps that in the bending process of a magnesium alloy plate, wave-shaped bending deformation is exerted perpendicular to the plate thickness direction to make crystalline grains deflect and weaken the basal plane texture, and the capacity for room-temperature formation of the plate is improved.By means of the method, the strength of the basal plane texture of the magnesium alloy plate is reduced substantially, and the basal plane texture deflects and diverges sideways.

Description

The method weakening magnesium alloy plate texture
Technical field
The present invention relates to non-ferrous metals processing field, particularly to a kind of method weakening magnesium alloy plate texture.
Background technology
Magnesium alloy is metal material the lightest in current commercial Application, have that damping property is excellent, capability of electromagnetic shielding good, shock resistance, wear-resisting, the advantage such as be easily recycled.Adopt the wrought magnesium alloy sheet material that the plastic workings such as extruding, rolling produce, there is better mechanical property, diversified structure, it is used widely in fields such as Aero-Space, automobile, electronics industry, 3C Products, and show increasing potentiality, meet the requirement such as light, thin and integrated of product.But, the magnesium alloy plate of the plastic working such as general common extruding and rolling mill practice all has stronger basal plane texture, is unfavorable for that later product uses and further plastic working.
Summary of the invention
In view of this, it is an object of the invention to provide a kind of method weakening magnesium alloy plate texture.
For achieving the above object, the technical solution used in the present invention is as follows:
A kind of method weakening magnesium alloy plate texture, comprises the following steps:
A. in magnesium alloy plate BENDING PROCESS, it is perpendicular to magnesium alloy plate thickness direction and applies deformation, by introducing sinusoidal deformation, regulation and control are organized roller rotating speed VUpper group of roller, lower group of roller rotating speed VLower group rollerWith sheet material flexural deformation rate αhThree parameters, wherein, αhFor starting sheet metal thickness h0With the difference of final sheet metal thickness h and h0Ratio, VUpper group of roller/VLower group roller=0.1-10, αh=1%-5%；
B. the magnesium alloy plate that step A obtains is carried out stress relief annealing.
Further, step A is perpendicular to magnesium alloy plate thickness direction apply to deform no less than 1 passage.
Further, V in described step AUpper group of roller/VLower group roller=1, αh=1%.
Further, in described step B, stress relief annealing temperature is 200-300 DEG C, and the time is 2-6h.
Further object is that the magnesium alloy plate that protection prepares according to said method.
The method have the benefit that:
This invention is by, in magnesium alloy plate BENDING PROCESS, being perpendicular to sheet metal thickness direction and apply to organize flexural deformation more, making crystal grain deflect, weakening basal plane texture, thus improving sheet material room temperature crystallized ability.By said method, the basal plane texture intensity of the magnesium alloy plate obtained significantly reduces, and disperses to side deflection.
Accompanying drawing explanation
Fig. 1 is magnesium alloy plate sinusoidal deformation schematic diagram, regulates and controls sinusoidal predeformation technique by parameter settings such as upper group of roller rotating speed, lower group of roller rotating speed, predeformation amount and group roller staggers up and down distances.The quantity of group roller can take R=1,2,3,4 ..., require to set according to sheet material physical length；
Fig. 2 is sinusoidal processing parameter setting schematic diagram, and wherein R1, R2, R3, R4 are upper group of roller, and r1, r2, r3, r4 are lower group of roller；V is the rotating speed of roller, and sheet material is subject to deformed shape for " waveform "；
Fig. 3 is the basal plane texture of the magnesium alloy plate of embodiment 1, and wherein a is the basal plane texture of the magnesium alloy plate before carrying out sinusoidal deformation, and b is the basal plane texture of the magnesium alloy plate after carrying out sinusoidal deformation.
Detailed description of the invention
In order to make the object, technical solutions and advantages of the present invention clearly, below embodiments of the invention are described in detail.
Embodiment 1
A kind of method weakening magnesium alloy plate texture, comprises the steps of
A. quality group is become the AZ31 magnesium alloy plate of 3%Al, 1%Zn, 0.4%Mn, 95.6%Mg in BENDING PROCESS, be perpendicular to magnesium alloy plate thickness direction and apply deformation, by introducing sinusoidal deformation, regulation and control are organized roller rotating speed VUpper group of roller, lower group of roller rotating speed VLower group rollerWith sheet material flexural deformation rate αhThree parameters, wherein, αhFor starting sheet metal thickness h0With the difference of final sheet metal thickness h and h0Ratio,
VUpper group of roller/VLower group roller=1, αh=1%；
B. the magnesium alloy plate that step A obtains is carried out stress relief annealing.
Step A is perpendicular to magnesium alloy plate thickness direction and applies 1 passage deformation；In step B, destressing temperature is 250 DEG C, and the time is 4h；At room temperature measuring the basal plane texture intensity before and after sinusoidal deformation, test result is as shown in the table.
Fig. 3 is the basal plane texture of the magnesium alloy plate of embodiment 1, and wherein a is the basal plane texture of the magnesium alloy plate before carrying out sinusoidal deformation, and b is the basal plane texture of the magnesium alloy plate after carrying out sinusoidal deformation.From above-mentioned test result and Fig. 3 it can be seen that after magnesium alloy is carried out sinusoidal deformation, basal plane texture intensity is reduced to 6.3 from 18.3, and dispersing to side deflection, basal plane texture is substantially weakened.
Embodiment 2
A kind of method weakening magnesium alloy plate texture, comprises the steps of
A. quality group is become the AZ31 magnesium alloy plate of 3%Al, 1%Zn, 0.4%Mn, 95.6%Mg in BENDING PROCESS, be perpendicular to magnesium alloy plate thickness direction and apply deformation, by introducing sinusoidal deformation, regulation and control are organized roller rotating speed VUpper group of roller, lower group of roller rotating speed VLower group rollerWith sheet material flexural deformation rate αhThree parameters, wherein, αhFor starting sheet metal thickness h0With the difference of final sheet metal thickness h and h0Ratio,
VUpper group of roller/VLower group roller=0.1, αh=5%；
B. the magnesium alloy plate that step A obtains is carried out stress relief annealing.
Step A is perpendicular to magnesium alloy plate thickness direction and applies 3 passage deformation.；In described step B, stress relief annealing temperature is 200 DEG C, and the time is 6h.At room temperature measuring the basal plane texture intensity before and after sinusoidal deformation, test result is as shown in the table.
From above-mentioned test result it can be seen that after magnesium alloy is carried out sinusoidal deformation, basal plane texture intensity obtains obvious reduction.
Embodiment 3
A kind of method weakening magnesium alloy plate texture, comprises the steps of
A. quality group is become the AZ31 magnesium alloy plate of 3%Al, 1%Zn, 0.4%Mn, 95.6%Mg in BENDING PROCESS, be perpendicular to magnesium alloy plate thickness direction and apply deformation, by introducing sinusoidal deformation, regulation and control are organized roller rotating speed VUpper group of roller, lower group of roller rotating speed VLower group rollerWith sheet material flexural deformation rate αhThree parameters, wherein, αhFor starting sheet metal thickness h0With the difference of final sheet metal thickness h and h0Ratio,
VUpper group of roller/VLower group roller=10, αh=3%；
B. the magnesium alloy plate that step A obtains is carried out stress relief annealing.
Being perpendicular to magnesium alloy plate thickness direction in step A and apply 4 passage deformation, in described step B, stress relief annealing temperature is 300 DEG C, and the time is 2h.At room temperature measuring the basal plane texture intensity before and after sinusoidal deformation, test result is as shown in the table.
From above-mentioned test result it can be seen that after magnesium alloy is carried out sinusoidal deformation, basal plane texture intensity obtains obvious reduction.
What finally illustrate is, above example is only in order to illustrate technical scheme and unrestricted, it will be understood by those within the art that, technical scheme can be modified or equivalent replacement, without deviating from objective and the scope of technical solution of the present invention, it all should be encompassed in the middle of scope of the presently claimed invention.

Claims (5)

1. the method weakening magnesium alloy plate texture, it is characterised in that comprise the steps of
A. in magnesium alloy plate BENDING PROCESS, it is perpendicular to magnesium alloy plate thickness direction and applies deformation, by introducing sinusoidal deformation, regulation and control are organized roller rotating speed VUpper group of roller, lower group of roller rotating speed VLower group rollerWith sheet material flexural deformation rate αhThree parameters, wherein, αhFor starting sheet metal thickness h0With the difference of final sheet metal thickness h and h0Ratio, VUpper group of roller/VLower group roller=0.1-10, αh=1%-5%；
B. the magnesium alloy plate that step A obtains is carried out stress relief annealing.
2. a kind of method weakening magnesium alloy plate texture according to claim 1, it is characterised in that be perpendicular to magnesium alloy plate thickness direction in described step A and apply to deform no less than 1 passage.
3. a kind of method weakening magnesium alloy plate texture according to claim 1, it is characterised in that
V in described step AUpper group of roller/VLower group roller=1, αh=1%.
4. a kind of method weakening magnesium alloy plate texture according to claim 1, it is characterised in that in described step B, the parameter of stress relief annealing is set to 200-300 DEG C, and the time is 2-6h.
5. the magnesium alloy plate that method described in any one of claim 1-4 prepares.
CN201610259728.5A 2016-04-25 2016-04-25 The method for weakening magnesium alloy plate texture Active CN105755411B (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107497874A (en) * 2017-08-04 2017-12-22 重庆大学 A kind of pressing method using curved interface structure regulating magnesium alloy plate texture
CN108817133A (en) * 2018-04-17 2018-11-16 河南明镁镁业科技有限公司 A kind of magnesium alloy texture weakening apparatus and method
CN114990459A (en) * 2022-06-30 2022-09-02 重庆科技学院 Magnesium alloy plate and method for preparing magnesium alloy plate through bidirectional composite torsion

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110293130A (en) * 2019-05-23 2019-10-01 太原理工大学 A kind of method that oblique corrugation inhibits magnesium alloy plate edge to split

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102127724A (en) * 2010-11-11 2011-07-20 中南大学 Method for preparing magnesium alloy plate strip with grain size in symmetric gradient distribution along plate thickness direction

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102127724A (en) * 2010-11-11 2011-07-20 中南大学 Method for preparing magnesium alloy plate strip with grain size in symmetric gradient distribution along plate thickness direction

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
王忠堂 等: "异步轧制AZ31镁合金板材的孪晶组织及织构", 《材料热处理学报》 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107497874A (en) * 2017-08-04 2017-12-22 重庆大学 A kind of pressing method using curved interface structure regulating magnesium alloy plate texture
CN107497874B (en) * 2017-08-04 2019-02-26 重庆大学 A kind of pressing method using curved interface structure regulating magnesium alloy plate texture
CN108817133A (en) * 2018-04-17 2018-11-16 河南明镁镁业科技有限公司 A kind of magnesium alloy texture weakening apparatus and method
CN114990459A (en) * 2022-06-30 2022-09-02 重庆科技学院 Magnesium alloy plate and method for preparing magnesium alloy plate through bidirectional composite torsion

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