CN109182859B - Method for preparing high-formability magnesium alloy plate through composite deformation - Google Patents
Method for preparing high-formability magnesium alloy plate through composite deformation Download PDFInfo
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- CN109182859B CN109182859B CN201810946160.3A CN201810946160A CN109182859B CN 109182859 B CN109182859 B CN 109182859B CN 201810946160 A CN201810946160 A CN 201810946160A CN 109182859 B CN109182859 B CN 109182859B
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- magnesium alloy
- alloy plate
- deformation
- rolling
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 39
- 238000000034 method Methods 0.000 title claims abstract description 17
- 239000002131 composite material Substances 0.000 title claims abstract description 9
- 238000005096 rolling process Methods 0.000 claims abstract description 21
- 238000007906 compression Methods 0.000 claims abstract description 19
- 230000006835 compression Effects 0.000 claims abstract description 19
- 238000010438 heat treatment Methods 0.000 claims abstract description 17
- 238000001816 cooling Methods 0.000 claims description 12
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 12
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims description 7
- 229910052749 magnesium Inorganic materials 0.000 claims description 7
- 239000011777 magnesium Substances 0.000 claims description 7
- 239000000956 alloy Substances 0.000 claims description 6
- 239000000126 substance Substances 0.000 claims description 6
- 229910045601 alloy Inorganic materials 0.000 claims description 4
- 229910018140 Al-Sn Inorganic materials 0.000 claims description 3
- 229910018564 Al—Sn Inorganic materials 0.000 claims description 3
- 229910052725 zinc Inorganic materials 0.000 claims description 3
- 229910052718 tin Inorganic materials 0.000 claims description 2
- 238000001125 extrusion Methods 0.000 description 5
- 238000003672 processing method Methods 0.000 description 3
- 239000007769 metal material Substances 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000013016 damping Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000002474 experimental method Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 230000010354 integration Effects 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 238000005457 optimization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 229910000601 superalloy Inorganic materials 0.000 description 1
Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- 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
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Metal Rolling (AREA)
Abstract
The invention discloses a method for preparing a high-formability magnesium alloy plate by composite deformation, which comprises the steps of using two times of rolling deformation, inserting one time of compression deformation in the middle, and carrying out heat treatment before each time of rolling deformation and compression deformation.
Description
Technical Field
The invention relates to the field of metal materials, in particular to a method for preparing a high-formability magnesium alloy plate by composite deformation.
Background
The magnesium alloy is the lightest metal material in the current industrial application, has the advantages of excellent vibration damping performance, good electromagnetic shielding performance and the like, can partially replace sections such as steel, aluminum alloy and the like, meets the requirements of light and thin integration and the like of products, and is rapidly increased in application to light weight of vehicles and 3C products.
The wrought magnesium alloy has better comprehensive mechanical property, uniform structure and fine crystal grains. At present, the deformed magnesium alloy sheet is mainly produced by plastic processing such as extrusion, rolling and the like. ZL201610957860.3 discloses a new method for preparing and processing high-performance alloy section, which discloses that the same magnesium alloy material is subjected to plastic processing by adopting a differential temperature thermal extrusion process, or the magnesium alloy section and a different alloy material are subjected to plastic processing by adopting a same/differential temperature thermal extrusion process, the extrusion speed and the deformation speed in the direction vertical to the axial direction are different due to different temperatures or different material types, the texture effect of the basal plane of the magnesium alloy plate is weakened for the magnesium alloy plate formed by hot extrusion, and the formability is improved. ZL201710392465.x discloses a high-plasticity magnesium alloy plate and a processing method thereof, and the disclosed technical scheme is mainly a deformed magnesium alloy plate produced by plastic processing of processes such as component optimization, heat treatment, longitudinal extrusion and the like. Although the magnesium alloy plate prepared by the technical scheme disclosed above has strong plasticity and high strength, the magnesium alloy plate has strong basal plane texture, so that the room temperature forming performance is poor, the stamping performance is greatly limited, and the popularization and application of the magnesium alloy plate are hindered.
Disclosure of Invention
In view of the above, the present invention provides a method for preparing a magnesium alloy plate with high formability by composite deformation, which employs a combination of a coupled rolling process and compression deformation to avoid the defect of poor room temperature formability of the plate.
In order to achieve the above purpose, the following technical solutions are specifically provided:
a method for preparing a high-forming magnesium alloy plate by composite deformation comprises the following steps:
1) early-stage heat treatment: preserving the heat of the magnesium alloy plate for 3-12 hours at the temperature of 300-400 ℃, and cooling by water after taking out;
2) first rolling deformation: deforming the plate by 3-20% along the Transverse Direction (TD), wherein the roller speed is 5-50 r/min;
3) middle-stage heat treatment: preserving the heat of the plate subjected to the rolling treatment in the step 2) for 1-3 hours at the temperature of 200-400 ℃, and cooling the plate by water after taking out;
4) compression deformation: compressing and deforming the plate 2-25% in the transverse direction; the compression speed is 0.01-20 mm/min;
5) and (3) post heat treatment: preserving the heat of the plate subjected to the compression deformation in the step 4) for 1-3 hours at the temperature of 200-400 ℃, and cooling the plate by water after the plate is taken out;
6) and (3) secondary rolling deformation: the sheet is deformed by 1-5% in the Transverse Direction (TD) at a roll speed of 5-50 r/min.
Preferably, the magnesium alloy plate is AZ31, the size of the magnesium alloy plate is 60mm wide and 1mm thick, and the magnesium alloy plate comprises the following chemical components in percentage by mass: al: 3%, Zn: 1 percent; mn: 0.3 percent and the balance of magnesium.
Preferably, the magnesium alloy plate is Mg-Al-Sn alloy, the size of the magnesium alloy plate is 60mm wide and 1mm thick, and the magnesium alloy plate comprises the following chemical components in percentage by mass: al: 1%, Sn: 1% and the balance of magnesium.
The invention has the beneficial effects that: the method disclosed by the invention uses two times of rolling deformation, one time of compression deformation is inserted in the rolling deformation, and heat treatment is carried out before each time of rolling deformation and compression deformation.
Detailed Description
The present invention will be explained in more detail with reference to specific examples.
Example 1
In the embodiment, an AZ31 magnesium alloy sheet with the dimension specification of 60mm width and 1mm thickness is adopted, and the alloy comprises the following chemical components in percentage by mass: al: 3%, Zn: 1 percent; mn: 0.3 percent of magnesium and the balance of magnesium;
the processing method comprises the following steps:
1) early-stage heat treatment: preserving the heat of the magnesium alloy plate for 3 hours at the temperature of 300 ℃, taking out and then cooling by water;
2) first rolling deformation: deforming the plate 3% along the Transverse Direction (TD), wherein the roller speed is 5 r/min;
3) middle-stage heat treatment: preserving the heat of the plate subjected to rolling treatment in the step 2) for 1 hour at the temperature of 300 ℃, taking out and then cooling by water;
4) compression deformation: compressing and deforming the plate by 3% along the Transverse Direction (TD); the compression speed is 0.01 mm/min;
5) and (3) post heat treatment: preserving the heat of the plate subjected to compression deformation in the step 4) for 1 hour at the temperature of 300 ℃, and taking out and then cooling by water;
6) and (3) secondary rolling deformation: the sheet was deformed in the Transverse Direction (TD) by 1% at a roll speed of 5 r/min. The cup protrusion value test was performed on the original sample and the deformed sample after processing of example 1, and the test results shown in table 1 were obtained.
Table 1 example 1 test results:
| test specimen | Cupping value (mm) |
| Original sample | 2.8 |
| Deformed sample | 5.3 |
Example 2
In this example, a Mg-Al-Sn magnesium alloy plate having a dimension of 60mm in width and 1mm in thickness was used
The alloy comprises the following chemical components: al: 1% wt, Sn: 1% and the balance of magnesium;
the processing method comprises the following steps:
1) early-stage heat treatment: preserving the temperature of the magnesium alloy plate for 10 hours at the temperature of 350 ℃, taking out and then cooling by water;
2) first rolling deformation: deforming the plate by 10 percent along the Transverse Direction (TD), wherein the roller speed is 20 r/min;
3) middle-stage heat treatment: preserving the heat of the plate rolled in the step 2) for 1 hour at the temperature of 350 ℃, and cooling the plate by water after taking out;
4) compression deformation: compressing and deforming the plate by 1% along the Transverse Direction (TD); the compression speed is 1 mm/min;
5) and (3) post heat treatment: preserving the heat of the plate subjected to compression deformation in the step 4) for 1 hour at the temperature of 350 ℃, and cooling the plate by water after the plate is taken out;
6) and (3) secondary rolling deformation: the plate is deformed by 5 percent along the Transverse Direction (TD), and the roller speed is 20 r/min;
the cup protrusion value test was performed on the original sample and the deformed sample after processing of example 2, and the test results shown in table 2 were obtained.
Table 2 example 2 test results:
| test specimen | Cupping value (mm) |
| Original sample | 2.7 |
| Deformed sample | 5.9 |
In the steps of the method disclosed in the above embodiment, two rolling deformations are used, one compression deformation is inserted in the middle, heat treatment is performed before each rolling deformation and compression deformation, and the process conditions of each step are verified through experiments, so that the cup projection value of the processed magnesium alloy plate is greatly improved compared with that of an original sample.
Finally, it is noted that the above-mentioned preferred embodiments illustrate rather than limit the technical solution of the present invention, and that, although the present invention has been described in detail with reference to the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details, as well as various changes in direction and amount of reduction, and coupling of various heat treatment processes may be made therein without departing from the scope of the present invention as defined in the appended claims.
Claims (3)
1. The method for preparing the magnesium alloy plate with high formability through composite deformation is characterized by comprising the following steps:
1) early-stage heat treatment: preserving the heat of the magnesium alloy plate for 3-12 hours at the temperature of 300-400 ℃, and cooling by water after taking out;
2) first rolling deformation: the transverse deformation rolling reduction of the plate is 3-20%, and the roller speed is 5-50 r/min;
3) middle-stage heat treatment: preserving the heat of the plate subjected to the rolling treatment in the step 2) for 1-3 hours at the temperature of 200-400 ℃, and cooling the plate by water after taking out;
4) compression deformation: compressing and deforming the plate 2-25% in the transverse direction; the compression speed is 0.01-20 mm/min;
5) and (3) post heat treatment: preserving the heat of the plate subjected to the compression deformation in the step 4) for 1-3 hours at the temperature of 200-400 ℃, and cooling the plate by water after the plate is taken out;
6) and (3) secondary rolling deformation: the plate is deformed by 1 to 5 percent along the transverse direction, and the roller speed is 5 to 50 r/min.
2. The method for preparing the magnesium alloy plate with high formability through composite deformation according to claim 1, wherein the magnesium alloy plate is AZ31, the size of the magnesium alloy plate is 60mm wide and 1mm thick, and the chemical components and the mass fractions are as follows: al: 3%, Zn: 1 percent; mn: 0.3 percent and the balance of magnesium.
3. The method for preparing the magnesium alloy plate with high formability by composite deformation according to claim 1, wherein the magnesium alloy plate is Mg-Al-Sn alloy, the size of the magnesium alloy plate is 60mm wide and 1mm thick, and the magnesium alloy plate comprises the following chemical components in percentage by mass: al: 1%, Sn: 1% and the balance of magnesium.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810946160.3A CN109182859B (en) | 2018-08-20 | 2018-08-20 | Method for preparing high-formability magnesium alloy plate through composite deformation |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810946160.3A CN109182859B (en) | 2018-08-20 | 2018-08-20 | Method for preparing high-formability magnesium alloy plate through composite deformation |
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| CN109182859A CN109182859A (en) | 2019-01-11 |
| CN109182859B true CN109182859B (en) | 2020-11-17 |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102392203A (en) * | 2011-10-28 | 2012-03-28 | 重庆大学 | Method for improving stamping formability of magnesium alloy sheet |
| CN103556092B (en) * | 2013-11-15 | 2015-12-09 | 重庆大学 | A kind of method improving Mg alloy formed performance |
| CN105039881B (en) * | 2015-07-21 | 2018-01-05 | 重庆大学 | A kind of magnesium alloy sheet forming property ameliorative way based on twinning deformation |
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