CN112981152A - Preparation method of high-strength magnesium alloy sheet - Google Patents
Preparation method of high-strength magnesium alloy sheet Download PDFInfo
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- CN112981152A CN112981152A CN202110187502.XA CN202110187502A CN112981152A CN 112981152 A CN112981152 A CN 112981152A CN 202110187502 A CN202110187502 A CN 202110187502A CN 112981152 A CN112981152 A CN 112981152A
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 96
- 238000002360 preparation method Methods 0.000 title claims abstract description 16
- 238000005098 hot rolling Methods 0.000 claims abstract description 44
- 238000004140 cleaning Methods 0.000 claims abstract description 42
- 239000010949 copper Substances 0.000 claims abstract description 35
- 238000005097 cold rolling Methods 0.000 claims abstract description 32
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 29
- 229910052802 copper Inorganic materials 0.000 claims abstract description 29
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 26
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 26
- 239000011777 magnesium Substances 0.000 claims abstract description 25
- 239000011701 zinc Substances 0.000 claims abstract description 25
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 claims abstract description 22
- 229910052725 zinc Inorganic materials 0.000 claims abstract description 19
- 238000000137 annealing Methods 0.000 claims abstract description 17
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 16
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 claims abstract description 16
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 16
- 238000000265 homogenisation Methods 0.000 claims abstract description 13
- 238000001816 cooling Methods 0.000 claims abstract description 12
- 238000005520 cutting process Methods 0.000 claims abstract description 12
- 239000012535 impurity Substances 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 8
- 229910000838 Al alloy Inorganic materials 0.000 claims abstract description 6
- 239000011261 inert gas Substances 0.000 claims abstract description 6
- 239000002994 raw material Substances 0.000 claims abstract description 6
- 238000001035 drying Methods 0.000 claims description 47
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 10
- 238000000034 method Methods 0.000 claims description 9
- 238000004321 preservation Methods 0.000 claims description 6
- 238000003825 pressing Methods 0.000 claims description 6
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052688 Gadolinium Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 claims description 3
- 229910052727 yttrium Inorganic materials 0.000 claims description 3
- 229910052726 zirconium Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 abstract description 3
- 239000000203 mixture Substances 0.000 abstract 1
- 238000005266 casting Methods 0.000 description 2
- 238000001125 extrusion Methods 0.000 description 2
- 229910052751 metal Inorganic materials 0.000 description 2
- 239000002184 metal Substances 0.000 description 2
- 238000005096 rolling process Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000004512 die casting Methods 0.000 description 1
- 238000001192 hot extrusion Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
-
- 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
- C22C23/04—Alloys based on magnesium with zinc or cadmium as the next major constituent
-
- 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
Abstract
The invention provides a preparation method of a high-strength magnesium alloy sheet, which comprises the following steps of firstly, respectively cutting a magnesium block, an aluminum block, a zinc block and a copper block into small blocks by utilizing a cutting tool; sequentially putting the materials into a cleaned crucible, adding the raw materials of the other components, and smelting the materials under the atmosphere of inert gas to obtain magnesium alloy melt; pouring the magnesium alloy into a sheet die prepared in advance, carrying out vacuum cooling, and taking the prepared magnesium alloy thick plate out of the sheet die after cooling; cleaning the surface with absolute ethyl alcohol, placing the cleaned surface into a vacuum resistance furnace for homogenization treatment, then carrying out three times of hot rolling treatment on the aluminum alloy thick plate by using a hot rolling mill, keeping the hot rolling treatment for a period of time, and carrying out annealing treatment; then placing the mixture into a cold rolling mill for secondary cold rolling, and annealing after the cold rolling is kept for a period of time; finally, absolute ethyl alcohol is used for cleaning surface impurities. The high-strength magnesium alloy sheet is prepared by smelting, homogenizing, hot rolling twice and cold rolling twice.
Description
Technical Field
The invention belongs to the technical field of magnesium alloy sheet preparation, and particularly relates to a preparation method of a high-strength magnesium alloy sheet.
Background
The magnesium alloy is the metal with the lowest density in practical metals, has the advantages of high specific strength, good specific rigidity, good shock resistance and noise reduction performance and the like, is a relatively ideal structural metal material, and has wide application prospects in the fields of aerospace, automobiles, 3C products and the like. At present, magnesium alloy products mainly comprise castings, wherein more than 90 percent of the castings are die castings, and high-performance magnesium alloy deformation parts are few. The reason is that the crystal structure of the magnesium alloy is a close-packed hexagonal structure, relatively few slip systems which can be started at normal temperature are provided, and the plastic deformation capability is poor.
The magnesium alloy sheet material usually needs a larger deformation amount in the preparation process, and the magnesium alloy has poor plastic deformation capability, which causes the difficulty in forming the magnesium alloy sheet. In previous research reports, there are two main methods for preparing magnesium alloy sheets, one is hot extrusion and hot rolling forming. This method of manufacture suffers from a number of disadvantages such as limited extrusion forces during extrusion, inability to produce larger gauge sheets, etc. The other method is a method for directly rolling and forming the magnesium alloy sheet, and the preparation method has simple process and low cost. There are still many disadvantages, such as: higher quality ingots are required; difficult rolling and forming of thick blanks, etc.
The invention explores a preparation method of the high-strength magnesium alloy sheet, the preparation process is simple and easy to control, and the production efficiency is obviously improved.
Disclosure of Invention
In order to solve the technical problems, the invention provides a preparation method of a high-strength magnesium alloy sheet, which comprises the following components in percentage by weight: 0.02-0.05% of Mn, 5.5-6% of Zn, 3.5-4.5% of Al, 4.3-5.01% of Cu, 0.1-0.5% of Gd, 0.025-0.04% of Y, 0.3-0.6% of Zr and the balance of Mg, wherein the magnesium alloy sheet is prepared by the following steps:
s1: firstly, cleaning an aluminum block and a copper block with clear water, after cleaning surface impurities, putting the aluminum block and the copper block into a drying oven to dry water, taking out the aluminum block and the copper block for later use after drying, cleaning the magnesium block and the zinc block with absolute ethyl alcohol, and respectively cutting the magnesium block, the aluminum block, the zinc block and the copper block into small blocks by using a cutting tool after cleaning;
s2: cleaning a melting crucible by using absolute ethyl alcohol, sequentially putting a magnesium block, an aluminum block, a zinc block and a copper block which are cut into small blocks into the cleaned crucible, adding raw materials of the other components, and smelting in an inert gas atmosphere to obtain a magnesium alloy melt;
s3: pouring the smelted magnesium alloy solution into a prepared sheet die, carrying out vacuum cooling, and taking out the prepared magnesium alloy thick plate from the sheet die after cooling;
s4: cleaning the surface of the prepared magnesium alloy thick plate by using absolute ethyl alcohol, putting the magnesium alloy thick plate into a drying box for drying after cleaning, putting the dried magnesium alloy into a vacuum resistance furnace for homogenization treatment, and carrying out hot rolling treatment on the magnesium alloy thick plate after the homogenization treatment;
s5: carrying out three times of hot rolling treatment on the aluminum alloy thick plate by using a hot rolling mill, controlling the temperature of the hot rolling mill to be kept at 350-410 ℃, controlling the hot rolling reduction amount of each time to be 20-30%, and carrying out annealing treatment after keeping for a period of time after the hot rolling treatment;
s6: placing the magnesium alloy plate after hot rolling into a cold rolling mill for secondary cold rolling, wherein the cold rolling temperature is room temperature, the pressing amount of the cold rolling mill is controlled to be 5-15%, and annealing treatment is carried out after the cold rolling is kept for a period of time;
s7: and cleaning impurities on the surface of the magnesium alloy sheet obtained after annealing treatment by using absolute ethyl alcohol, drying the magnesium alloy sheet in a drying oven, and obtaining the high-strength magnesium alloy sheet after drying treatment.
Preferably, the magnesium alloy sheet comprises the following components in percentage by weight: 0.025 percent of Mn, 5.5 percent of Zn, 4 percent of Al, 4.3 percent of Cu, 0.25 percent of Gd, 0.025 percent of Y, 0.3 percent of Zr and the balance of Mg.
Preferably, the magnesium alloy sheet comprises the following components in percentage by weight: 0.03% of Mn, 6% of Zn, 3.5% of Al, 5% of Cu, 0.3% of Gd, 0.03% of Y, 0.5% of Zr and the balance of Mg.
Preferably, the drying temperature of the drying oven is 90-110 ℃, and the drying time is 5-8 Min.
Preferably, the homogenization treatment temperature of the vacuum resistance furnace is 500-570 ℃, and the constant temperature is kept for 8-10 h.
Preferably, the hot rolling mill is annealed after heat preservation for 24 hours after hot rolling.
Compared with the prior art, the invention has the beneficial effects that: the high-strength magnesium alloy sheet is prepared by smelting, homogenizing, hot rolling twice and cold rolling twice, an oxidation film can be prevented from being generated on the surface of the magnesium alloy after the cold rolling, the thickness of the sheet of the magnesium alloy sheet after the cold rolling is uniform, the preparation process is simple and easy to control, and the production efficiency is obviously improved.
Drawings
FIG. 1 is a step diagram of the present invention.
Detailed Description
The invention is further described below with reference to the accompanying drawings:
example (b):
a preparation method of a high-strength magnesium alloy sheet comprises the following components in percentage: 0.02-0.05% of Mn, 5.5-6% of Zn, 3.5-4.5% of Al, 4.3-5.01% of Cu, 0.1-0.5% of Gd, 0.025-0.04% of Y, 0.3-0.6% of Zr and the balance of Mg.
As shown in the attached figure 1, the magnesium alloy sheet is prepared by the following steps:
(1) firstly, cleaning an aluminum block and a copper block with clear water, after cleaning surface impurities, putting the aluminum block and the copper block into a drying box, drying at the drying temperature of 90-110 ℃ for 5-8Min, taking out the aluminum block and the copper block for later use after drying water, cleaning a magnesium block and a zinc block with absolute ethyl alcohol, and after cleaning, respectively cutting the magnesium block, the aluminum block, the zinc block and the copper block into small blocks by using a cutting tool;
(2) cleaning a melting crucible by using absolute ethyl alcohol, sequentially putting a magnesium block, an aluminum block, a zinc block and a copper block which are cut into small blocks into the cleaned crucible, adding raw materials of the other components, and smelting in an inert gas atmosphere to obtain a magnesium alloy melt;
(3) pouring the smelted magnesium alloy solution into a prepared sheet die, carrying out vacuum cooling, and taking out the prepared magnesium alloy thick plate from the sheet die after cooling;
(4) cleaning the surface of the prepared magnesium alloy thick plate by using absolute ethyl alcohol, after cleaning, putting the magnesium alloy thick plate into a drying box for drying treatment, putting the dried magnesium alloy into a vacuum resistance furnace, wherein the temperature of the vacuum resistance furnace is 500-570 ℃, carrying out homogenization treatment, and carrying out constant-temperature heat preservation for 8-10h, and carrying out hot rolling treatment on the magnesium alloy thick plate after the homogenization treatment;
(5) carrying out three times of hot rolling treatment on the aluminum alloy thick plate by using a hot rolling mill, controlling the temperature of the hot rolling mill to be kept at 350-410 ℃, controlling the hot rolling reduction amount of each time to be 20-30%, and carrying out annealing treatment after heat preservation for 24 hours after hot rolling treatment;
(6) placing the magnesium alloy plate after hot rolling into a cold rolling mill for secondary cold rolling, wherein the cold rolling temperature is room temperature, the pressing amount of the cold rolling mill is controlled to be 5-15%, and annealing treatment is carried out after the cold rolling is kept for a period of time;
(7) and cleaning the surface impurities of the magnesium alloy sheet obtained after annealing treatment by using absolute ethyl alcohol, drying the magnesium alloy sheet in a drying oven at the drying temperature of 90-110 ℃ for 5-8Min to obtain the high-strength magnesium alloy sheet.
Example 1
A preparation method of a high-strength magnesium alloy sheet comprises the following components in percentage: 0.025 percent of Mn, 5.5 percent of Zn, 4 percent of Al, 4.3 percent of Cu, 0.25 percent of Gd, 0.025 percent of Y, 0.3 percent of Zr and the balance of Mg.
(1) Firstly, cleaning an aluminum block and a copper block with clear water, after cleaning surface impurities, putting the aluminum block and the copper block into a drying box, drying at the drying temperature of 110 ℃ for 6Min, taking out the aluminum block and the copper block for later use after drying water, cleaning a magnesium block and a zinc block with absolute ethyl alcohol, and respectively cutting the magnesium block, the aluminum block, the zinc block and the copper block into small blocks by using a cutting tool after cleaning;
(2) cleaning a melting crucible by using absolute ethyl alcohol, sequentially putting a magnesium block, an aluminum block, a zinc block and a copper block which are cut into small blocks into the cleaned crucible, adding raw materials of the other components, and smelting in an inert gas atmosphere to obtain a magnesium alloy melt;
(3) pouring the smelted magnesium alloy solution into a prepared sheet die, carrying out vacuum cooling, and taking out the prepared magnesium alloy thick plate from the sheet die after cooling;
(4) cleaning the surface of the prepared magnesium alloy thick plate by using absolute ethyl alcohol, cleaning, then putting the magnesium alloy thick plate into a drying box for drying treatment, putting the dried magnesium alloy into a vacuum resistance furnace, wherein the temperature of the vacuum resistance furnace is 560 ℃, carrying out homogenization treatment, keeping the temperature at constant temperature for 10 hours, and carrying out hot rolling treatment on the magnesium alloy thick plate after the homogenization treatment;
(5) carrying out three times of hot rolling treatment on the aluminum alloy thick plate by using a hot rolling mill, controlling the temperature of the hot rolling mill to be 410 ℃, controlling the hot rolling reduction amount of each time to be 25%, carrying out annealing treatment after heat preservation for 24 hours after hot rolling treatment;
(6) placing the magnesium alloy plate after hot rolling into a cold rolling mill for secondary cold rolling, wherein the cold rolling temperature is room temperature, the pressing amount of the cold rolling mill is controlled to be 15%, and annealing treatment is carried out after the cold rolling is kept for a period of time;
(7) and cleaning the surface impurities of the magnesium alloy sheet obtained after annealing treatment by using absolute ethyl alcohol, drying the magnesium alloy sheet in a drying oven at the drying temperature of 110 ℃ for 6Min to obtain the high-strength magnesium alloy sheet.
Example 2
A preparation method of a high-strength magnesium alloy sheet comprises the following components in percentage: 0.03% of Mn, 6% of Zn, 3.5% of Al, 5% of Cu, 0.3% of Gd, 0.03% of Y, 0.5% of Zr and the balance of Mg.
The preparation steps of the magnesium alloy sheet are as follows:
(1) firstly, cleaning an aluminum block and a copper block with clear water, after cleaning surface impurities, putting the aluminum block and the copper block into a drying box, drying at the drying temperature of 100 ℃ for 8Min, taking out the aluminum block and the copper block for later use after drying water, cleaning a magnesium block and a zinc block with absolute ethyl alcohol, and respectively cutting the magnesium block, the aluminum block, the zinc block and the copper block into small blocks by using a cutting tool after cleaning;
(2) cleaning a melting crucible by using absolute ethyl alcohol, sequentially putting a magnesium block, an aluminum block, a zinc block and a copper block which are cut into small blocks into the cleaned crucible, adding raw materials of the other components, and smelting in an inert gas atmosphere to obtain a magnesium alloy melt;
(3) pouring the smelted magnesium alloy solution into a prepared sheet die, carrying out vacuum cooling, and taking out the prepared magnesium alloy thick plate from the sheet die after cooling;
(4) cleaning the surface of the prepared magnesium alloy thick plate by using absolute ethyl alcohol, cleaning, then putting the magnesium alloy thick plate into a drying box for drying treatment, putting the dried magnesium alloy into a vacuum resistance furnace, wherein the temperature of the vacuum resistance furnace is 570 ℃, carrying out homogenization treatment, keeping the temperature at constant temperature for 10 hours, and carrying out hot rolling treatment on the magnesium alloy thick plate after the homogenization treatment;
(5) carrying out three times of hot rolling treatment on the aluminum alloy thick plate by using a hot rolling mill, controlling the temperature of the hot rolling mill to be kept at 400 ℃, controlling the pressing amount of each hot rolling to be 30%, and carrying out annealing treatment after heat preservation for 24 hours after hot rolling treatment;
(6) placing the magnesium alloy plate after hot rolling into a cold rolling mill for secondary cold rolling, wherein the cold rolling temperature is room temperature, the pressing amount of the cold rolling mill is controlled to be 10%, and annealing treatment is carried out after the cold rolling is kept for a period of time;
(7) and cleaning the surface impurities of the magnesium alloy sheet obtained after annealing treatment by using absolute ethyl alcohol, drying the magnesium alloy sheet in a drying oven at the drying temperature of 100 ℃ for 8Min to obtain the high-strength magnesium alloy sheet.
The technical solutions of the present invention or similar technical solutions designed by those skilled in the art based on the teachings of the technical solutions of the present invention are all within the scope of the present invention.
Claims (6)
1. The preparation method of the high-strength magnesium alloy sheet is characterized in that the magnesium alloy sheet comprises the following components in percentage by weight: 0.02-0.05% of Mn, 5.5-6% of Zn, 3.5-4.5% of Al, 4.3-5.01% of Cu, 0.1-0.5% of Gd, 0.025-0.04% of Y, 0.3-0.6% of Zr and the balance of Mg, wherein the magnesium alloy sheet is prepared by the following steps:
s1: firstly, cleaning an aluminum block and a copper block with clear water, after cleaning surface impurities, putting the aluminum block and the copper block into a drying oven to dry water, taking out the aluminum block and the copper block for later use after drying, cleaning the magnesium block and the zinc block with absolute ethyl alcohol, and respectively cutting the magnesium block, the aluminum block, the zinc block and the copper block into small blocks by using a cutting tool after cleaning;
s2: cleaning a melting crucible by using absolute ethyl alcohol, sequentially putting a magnesium block, an aluminum block, a zinc block and a copper block which are cut into small blocks into the cleaned crucible, adding raw materials of the other components, and smelting in an inert gas atmosphere to obtain a magnesium alloy melt;
s3: pouring the smelted magnesium alloy solution into a prepared sheet die, carrying out vacuum cooling, and taking out the prepared magnesium alloy thick plate from the sheet die after cooling;
s4: cleaning the surface of the prepared magnesium alloy thick plate by using absolute ethyl alcohol, putting the magnesium alloy thick plate into a drying box for drying after cleaning, putting the dried magnesium alloy into a vacuum resistance furnace for homogenization treatment, and carrying out hot rolling treatment on the magnesium alloy thick plate after the homogenization treatment;
s5: carrying out three times of hot rolling treatment on the aluminum alloy thick plate by using a hot rolling mill, controlling the temperature of the hot rolling mill to be kept at 350-410 ℃, controlling the hot rolling reduction amount of each time to be 20-30%, and carrying out annealing treatment after keeping for a period of time after the hot rolling treatment;
s6: placing the magnesium alloy plate after hot rolling into a cold rolling mill for secondary cold rolling, wherein the cold rolling temperature is room temperature, the pressing amount of the cold rolling mill is controlled to be 5-15%, and annealing treatment is carried out after the cold rolling is kept for a period of time;
s7: and cleaning impurities on the surface of the magnesium alloy sheet obtained after annealing treatment by using absolute ethyl alcohol, drying the magnesium alloy sheet in a drying oven, and obtaining the high-strength magnesium alloy sheet after drying treatment.
2. The method for preparing a high-strength magnesium alloy sheet according to claim 1, wherein the magnesium alloy sheet comprises the following components in percentage by weight: 0.025 percent of Mn, 5.5 percent of Zn, 4 percent of Al, 4.3 percent of Cu, 0.25 percent of Gd, 0.025 percent of Y, 0.3 percent of Zr and the balance of Mg.
3. The method for preparing a high-strength magnesium alloy sheet according to claim 1, wherein the magnesium alloy sheet comprises the following components in percentage by weight: 0.03% of Mn, 6% of Zn, 3.5% of Al, 5% of Cu, 0.3% of Gd, 0.03% of Y, 0.5% of Zr and the balance of Mg.
4. The method for producing a high-strength magnesium alloy sheet according to claim 1, wherein the drying temperature of the drying oven is 90 to 110 ℃ and the drying time is 5 to 8 Min.
5. The method for preparing a high-strength magnesium alloy sheet as claimed in claim 1, wherein the homogenization treatment temperature of the vacuum resistance furnace is 500-570 ℃, and the constant temperature is maintained for 8-10 h.
6. The method for preparing the high-strength magnesium alloy sheet according to claim 1, wherein the hot rolling mill is subjected to heat preservation for 24 hours and then annealed.
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Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103710601A (en) * | 2014-01-16 | 2014-04-09 | 张霞 | Hot-rolled magnesium-zinc alloy sheet and manufacturing method thereof |
| CN103725943A (en) * | 2014-01-16 | 2014-04-16 | 张霞 | Magnesium alloy sheet and preparation method thereof |
| CN111450322A (en) * | 2020-04-13 | 2020-07-28 | 北京科技大学 | Medical degradable multilayer Mg/Zn composite material and preparation method thereof |
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2021
- 2021-02-18 CN CN202110187502.XA patent/CN112981152A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103710601A (en) * | 2014-01-16 | 2014-04-09 | 张霞 | Hot-rolled magnesium-zinc alloy sheet and manufacturing method thereof |
| CN103725943A (en) * | 2014-01-16 | 2014-04-16 | 张霞 | Magnesium alloy sheet and preparation method thereof |
| CN111450322A (en) * | 2020-04-13 | 2020-07-28 | 北京科技大学 | Medical degradable multilayer Mg/Zn composite material and preparation method thereof |
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