CN115821135B - High-plasticity magnesium alloy material and preparation method thereof - Google Patents
High-plasticity magnesium alloy material and preparation method thereof Download PDFInfo
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- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 59
- 239000000956 alloy Substances 0.000 title claims abstract description 54
- 238000002360 preparation method Methods 0.000 title claims abstract description 12
- 239000011777 magnesium Substances 0.000 claims abstract description 15
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 10
- 239000012535 impurity Substances 0.000 claims abstract description 10
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 10
- 229910052689 Holmium Inorganic materials 0.000 claims abstract description 8
- 229910052718 tin Inorganic materials 0.000 claims abstract description 7
- 238000004519 manufacturing process Methods 0.000 claims abstract description 4
- 238000007670 refining Methods 0.000 claims description 37
- 238000001816 cooling Methods 0.000 claims description 27
- 229910045601 alloy Inorganic materials 0.000 claims description 22
- 238000000034 method Methods 0.000 claims description 18
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 claims description 16
- 229910052782 aluminium Inorganic materials 0.000 claims description 16
- 238000005266 casting Methods 0.000 claims description 16
- 238000001125 extrusion Methods 0.000 claims description 16
- 238000003756 stirring Methods 0.000 claims description 16
- 238000003723 Smelting Methods 0.000 claims description 15
- 238000000265 homogenisation Methods 0.000 claims description 15
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 11
- 239000002893 slag Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 239000000155 melt Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- KBMLJKBBKGNETC-UHFFFAOYSA-N magnesium manganese Chemical compound [Mg].[Mn] KBMLJKBBKGNETC-UHFFFAOYSA-N 0.000 claims description 6
- 230000004907 flux Effects 0.000 claims description 5
- 229910052748 manganese Inorganic materials 0.000 claims description 5
- 239000011572 manganese Substances 0.000 claims description 5
- 229910000838 Al alloy Inorganic materials 0.000 abstract description 6
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 230000000052 comparative effect Effects 0.000 description 2
- 235000012438 extruded product Nutrition 0.000 description 2
- ZSLUVFAKFWKJRC-IGMARMGPSA-N 232Th Chemical compound [232Th] ZSLUVFAKFWKJRC-IGMARMGPSA-N 0.000 description 1
- 229910052684 Cerium Inorganic materials 0.000 description 1
- 229910000914 Mn alloy Inorganic materials 0.000 description 1
- 229910052776 Thorium Inorganic materials 0.000 description 1
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 1
- QCWXUUIWCKQGHC-UHFFFAOYSA-N Zirconium Chemical compound [Zr] QCWXUUIWCKQGHC-UHFFFAOYSA-N 0.000 description 1
- 229910001093 Zr alloy Inorganic materials 0.000 description 1
- UQCVYEFSQYEJOJ-UHFFFAOYSA-N [Mg].[Zn].[Zr] Chemical compound [Mg].[Zn].[Zr] UQCVYEFSQYEJOJ-UHFFFAOYSA-N 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- 239000003513 alkali Substances 0.000 description 1
- 238000005275 alloying Methods 0.000 description 1
- SNAAJJQQZSMGQD-UHFFFAOYSA-N aluminum magnesium Chemical compound [Mg].[Al] SNAAJJQQZSMGQD-UHFFFAOYSA-N 0.000 description 1
- 229910052793 cadmium Inorganic materials 0.000 description 1
- BDOSMKKIYDKNTQ-UHFFFAOYSA-N cadmium atom Chemical compound [Cd] BDOSMKKIYDKNTQ-UHFFFAOYSA-N 0.000 description 1
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 description 1
- 239000002131 composite material Substances 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 238000009776 industrial production Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000750 progressive effect Effects 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 229910052725 zinc Inorganic materials 0.000 description 1
- 239000011701 zinc Substances 0.000 description 1
- 229910052726 zirconium Inorganic materials 0.000 description 1
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the field of nonferrous metal production, and in particular discloses a high-plasticity magnesium alloy material and a preparation method thereof, wherein the high-plasticity magnesium alloy material comprises the following components in percentage by mass: ho:0.2 to 3.0 percent, al:0.1 to 1.5 percent, mn:0.3 to 1.5 percent of Sn:0.1 to 0.5 percent, and the balance of magnesium and unavoidable impurities; the sum of the mass percentages of the Ho, al, mn, sn elements is less than or equal to 5 percent; the invention provides a high-plasticity magnesium alloy material and a preparation method thereof, which realize that the room-temperature elongation exceeds 40 percent, and are far superior to common commercial magnesium alloy and aluminum alloy materials, and have important significance for popularization of magnesium alloy application.
Description
Technical Field
The invention relates to the field of nonferrous metal production, in particular to a high-plasticity magnesium alloy material.
Background
The magnesium alloy is an alloy which is based on magnesium and added with other elements. The method is characterized in that: has a low density (1.8 g/cm) 3 Left and right), high strength, large elastic modulus, good heat dissipation, good shock absorption, larger impact load bearing capacity than aluminum alloy, and good corrosion resistance to organic matters and alkali. The main alloy elements are aluminum, zinc, manganese, cerium, thorium, a small amount of zirconium or cadmium, etc. The most widely used is magnesium aluminum alloy, followed by magnesium manganese alloy and magnesium zinc zirconium alloy. The method is mainly used for the industrial departments of aviation, aerospace, transportation, chemical industry, rocket and the like.
Along with the gradual maturity of magnesium alloy in engineering application, the requirement of the process procedure on the deformability of magnesium alloy materials is higher and higher, and particularly, the process procedure of preparing parts with complex structures and ultrathin walls is adopted.
The magnesium alloy has a close-packed hexagonal lattice structure, so that the magnesium alloy has less room temperature sliding system and generally lower plasticity, so that the magnesium alloy has poorer room temperature deformability and is limited in application.
In the current commercial magnesium alloy, the room temperature plasticity is generally low, and compared with an aluminum alloy material, obvious short plates exist.
Therefore, how to provide a high-plasticity magnesium alloy material and a preparation method thereof is a problem to be solved by those skilled in the art.
Disclosure of Invention
In view of the above, the invention provides a high-plasticity magnesium alloy material and a preparation method thereof, which aim at the defect of low room temperature plasticity of magnesium alloy, realize room temperature elongation of more than 40 percent, and are far superior to common commercial magnesium alloy and aluminum alloy materials, and have important significance for popularization of magnesium alloy application.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a high-plasticity magnesium alloy material consists of the following components in percentage by mass: ho:0.2 to 3.0 percent, al:0.1 to 1.5 percent, mn:0.3 to 1.5 percent of Sn:0.1 to 0.5 percent, and the balance of magnesium and unavoidable impurities; the sum of the mass percentages of the Ho, al, mn, sn elements is less than or equal to 5 percent.
Preferably, in the high-plasticity magnesium alloy material, the high-plasticity magnesium alloy material comprises the following components in percentage by mass: ho: ho:1.2%, al:0.5%, mn:0.25%, sn:0.15%, the balance Mg and unavoidable impurities.
Preferably, in the high-plasticity magnesium alloy material, the high-plasticity magnesium alloy material comprises the following components in percentage by mass: ho:2.8%, al:1.2%, mn:0.5%, sn:0.1%, the balance being Mg and unavoidable impurities.
Preferably, in the high-plasticity magnesium alloy material, the mass percentage of the unavoidable impurities is less than or equal to 0.2%.
The preparation method of the high-plasticity magnesium alloy material comprises the following steps:
s1, proportioning: proportioning according to the proportion of each component, adding Al and Sn respectively in a pure aluminum and pure tin ingot mode, and adding Ho and Mn respectively in a Mg-20Ho intermediate alloy and a Mg-30Mn intermediate alloy mode;
s2, smelting: heating a smelting crucible to 200 ℃, adding the proportioned pure magnesium ingot, the pure aluminum ingot and the magnesium-manganese intermediate alloy, heating to 740 ℃ after melting, adding the proportioned Mg-20Ho intermediate alloy, and stirring the melt for 3-5min after melting; after standing for 10min, adding a magnesium alloy flux with the mass percent of 2% of the melt for refining treatment, wherein the refining temperature is 730-750 ℃ and the refining time is 10-15 min; cooling to 720-730 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 30-40 min; then cooling to 710-720 ℃ for casting; the smelting process adopts CO 2 +SF 6 The mixed gas is protected;
s3, extruding: homogenizing the casting blank obtained in the step S2, wherein the homogenization temperature is as follows: homogenizing at 520-530 deg.c for time: air cooling for 6-10 h; and then extruding to obtain the high-plasticity magnesium alloy, wherein the extrusion temperature is 200-250 ℃ and the extrusion ratio is 20:1.
Preferably, in the above preparation method of a high-plasticity magnesium alloy material, in S2, the refining temperature is 730 ℃, and the refining time is 10min; cooling to 720 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 30min; then cooling to 710 ℃ for casting;
in S3, the homogenization temperature is 520 ℃ and the homogenization time is as follows: 6h; the extrusion temperature was 200 ℃.
Preferably, in the above preparation method of a high-plasticity magnesium alloy material, in S2, the refining temperature is 740 ℃, and the refining time is 13min; cooling to 725 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, then fishing out slag, and standing for 35min; then cooling to 715 ℃ for casting;
in S3, the homogenization temperature is 525 ℃ and the homogenization time is as follows: 8h; the extrusion temperature was 225 ℃.
Preferably, in the above preparation method of a high-plasticity magnesium alloy material, in S2, the refining temperature is 750 ℃, and the refining time is 15min; cooling to 730 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 40min; then cooling to 720 ℃ for casting;
in S3, homogenizing temperature is 530 ℃, and homogenizing time is: 10h; the extrusion temperature was 250 ℃.
Compared with the prior art, the invention discloses a high-plasticity magnesium alloy material and a preparation method thereof, and has the following advantages:
1. according to the high-plasticity magnesium alloy provided by the invention, the lattice structure of the magnesium matrix is changed by adding specific elements, the room-temperature sliding system is increased, the room-temperature plasticity of the magnesium alloy is greatly improved, and the detected room-temperature plasticity is generally higher than 40%.
2. The high-plasticity magnesium alloy provided by the invention has the advantages of lower alloying degree and lower cost, is suitable for industrial production, is far superior to common commercial magnesium alloy and aluminum alloy materials, and has important significance for popularization of magnesium alloy application.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings that are required to be used in the embodiments or the description of the prior art will be briefly described below, and it is obvious that the drawings in the following description are only embodiments of the present invention, and that other drawings can be obtained according to the provided drawings without inventive effort for a person skilled in the art.
FIG. 1 is a process flow diagram of a method for preparing a high plasticity magnesium alloy material according to the present invention.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments. All other embodiments, which can be made by those skilled in the art based on the embodiments of the invention without making any inventive effort, are intended to be within the scope of the invention.
Example 1
The composite material comprises the following components in percentage by mass:
ho:1.2%, al:0.5%, mn:0.25%, sn:0.15%, the balance Mg and unavoidable impurities;
s1, proportioning: proportioning according to the components of the high-plasticity magnesium alloy, adding Al and Sn in a pure aluminum and pure tin ingot mode respectively, and adding Ho and Mn in a Mg-20Ho intermediate alloy and a Mg-30Mn intermediate alloy mode respectively;
s2, smelting: heating a smelting crucible to 200 ℃, adding the proportioned pure magnesium ingot, the pure aluminum ingot and the magnesium-manganese intermediate alloy, heating to 740 ℃ after melting, adding the proportioned Mg-20Ho intermediate alloy, and stirring the melt for 3-5min after melting; after standing for 10min, adding No. 6 magnesium alloy flux with the mass percent of 2% of the melt for refining treatment, wherein the refining temperature is 730-750 ℃ and the refining time is 10-15 min; cooling to 720-730 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 30-40 min; and then cooling to 710-720 ℃ for casting. The smelting process adopts CO 2 +SF 6 The mixed gas is protected.
S3, extruding: homogenizing the casting blank obtained in the step 2, wherein the homogenization temperature is as follows: 520 ℃, homogenization time: 8h, air cooling; and then extruding to obtain the high-plasticity magnesium alloy, wherein the extrusion temperature is 200 ℃, and the extrusion ratio is 20:1.
The extruded product was sampled for room temperature tensile properties and compared with a general commercial magnesium alloy AZ31B, as follows:
| name of the name | Status of | Tensile strength Rm, MPa | Yield strength Rp0.2, mpa | Elongation A%, percent |
| Comparative example | H112 | 220 | 140 | 7.0 |
| Example 1 | H112 | 180 | 120 | 55 |
Example 2
Example 2 comprises the following components in percentage by mass:
ho:2.8%, al:1.2%, mn:0.5%, sn:0.1% of Mg and unavoidable impurities in balance;
s1, proportioning: proportioning according to the components of the high-plasticity magnesium alloy, adding Al and Sn in a pure aluminum and pure tin ingot mode respectively, and adding Ho and Mn in a Mg-20Ho intermediate alloy and a Mg-30Mn intermediate alloy mode respectively;
s2, smelting: heating a smelting crucible to 200 ℃, adding the proportioned pure magnesium ingot, the pure aluminum ingot and the magnesium-manganese intermediate alloy, heating to 740 ℃ after melting, adding the proportioned Mg-20Ho intermediate alloy, and stirring the melt for 3-5min after melting; after standing for 10min, adding No. 6 magnesium alloy flux with the mass percent of 2% of the melt for refining treatment, wherein the refining temperature is 730-750 ℃ and the refining time is 10-15 min; cooling to 720-730 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 30-40 min; and then cooling to 710-720 ℃ for casting. The smelting process adopts CO 2 +SF 6 The mixed gas is protected.
S3, extruding: homogenizing the casting blank obtained in the step 2, wherein the homogenization temperature is as follows: 530 ℃, homogenization time: 6h, air cooling; and then extruding to obtain the high-plasticity magnesium alloy, wherein the extrusion temperature is 250 ℃, and the extrusion ratio is 20:1.
The extruded product was sampled for room temperature tensile properties and compared with a general commercial magnesium alloy AZ31B, as follows:
| name of the name | Status of | Tensile strength Rm, MPa | Yield strength Rp0.2, mpa | Elongation A%, percent |
| Comparative example | H112 | 220 | 140 | 7.0 |
| Example 2 | H112 | 200 | 150 | 45 |
The test data in the embodiment 1 and the embodiment 2 show that the plasticity of the magnesium alloy material with high plasticity prepared by adopting the method provided by the invention is obviously improved, and the room temperature plasticity of the magnesium alloy is greatly improved.
In the present specification, each embodiment is described in a progressive manner, and each embodiment is mainly described in a different point from other embodiments, and identical and similar parts between the embodiments are all enough to refer to each other. For the device disclosed in the embodiment, since it corresponds to the method disclosed in the embodiment, the description is relatively simple, and the relevant points refer to the description of the method section.
The previous description of the disclosed embodiments is provided to enable any person skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other embodiments without departing from the spirit or scope of the invention. Thus, the present invention is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.
Claims (6)
1. The high-plasticity magnesium alloy material is characterized by comprising the following components in percentage by mass: ho: 0.2-3.0%, al: 0.1-1.5%, mn: 0.3-1.5%, sn: 0.1-0.5%, and the balance of magnesium and unavoidable impurities; the sum of the mass percentages of the Ho, al, mn, sn elements is less than or equal to 5 percent; the mass percentage of the unavoidable impurities is less than or equal to 0.2%; the preparation method comprises the following steps:
s1, proportioning: proportioning according to the proportion of each component, adding Al and Sn respectively in a pure aluminum ingot mode and a pure tin ingot mode, and adding Ho and Mn respectively in a Mg-20Ho intermediate alloy mode and a Mg-30Mn intermediate alloy mode;
s2, smelting: heating a smelting crucible to 200 ℃, adding the proportioned pure magnesium ingot, the pure aluminum ingot and the magnesium-manganese intermediate alloy, heating to 740 ℃ after melting, adding the proportioned Mg-20Ho intermediate alloy, and stirring the melt for 3-5min after melting; after standing for 10min, adding a magnesium alloy flux with the mass percent of 2% of the melt for refining treatment, wherein the refining temperature is 730-750 ℃ and the refining time is 10-15 min; cooling to 720-730 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 30-40 min; then cooling to 710-720 ℃ for casting; the smelting process adopts CO 2 +SF 6 The mixed gas is protected;
s3, extruding: homogenizing the casting blank obtained in the step S2, wherein the homogenization temperature is as follows: 520-530 ℃, homogenizing time: 6-10 h, and air cooling; and then extruding to obtain the high-plasticity magnesium alloy, wherein the extrusion temperature is 200-250 ℃, and the extrusion ratio is 20:1.
2. The high-plasticity magnesium alloy material according to claim 1, which is characterized by comprising the following components in percentage by mass: ho:2.8%, al:1.2%, mn:0.5%, sn:0.1%, the balance being Mg and unavoidable impurities.
3. A method for preparing the high-plasticity magnesium alloy material as claimed in claim 1, comprising the steps of:
s1, proportioning: proportioning according to the proportion of each component, adding Al and Sn respectively in a pure aluminum ingot mode and a pure tin ingot mode, and adding Ho and Mn respectively in a Mg-20Ho intermediate alloy mode and a Mg-30Mn intermediate alloy mode;
s2, smelting: heating a smelting crucible to 200 ℃, adding the proportioned pure magnesium ingot, the pure aluminum ingot and the magnesium-manganese intermediate alloy, heating to 740 ℃ after melting, adding the proportioned Mg-20Ho intermediate alloy, and stirring the melt for 3-5min after melting; after standing for 10min, adding a magnesium alloy flux with the mass percent of 2% of the melt for refining treatment, wherein the refining temperature is 730-750 ℃ and the refining time is 10-15 min; cooling to 720-730 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 30-40 min; then cooling to 710-720 ℃ for casting; the smelting process adopts CO 2 +SF 6 The mixed gas is protected;
s3, extruding: homogenizing the casting blank obtained in the step S2, wherein the homogenization temperature is as follows: 520-530 ℃, homogenizing time: 6-10 h, and air cooling; and then extruding to obtain the high-plasticity magnesium alloy, wherein the extrusion temperature is 200-250 ℃, and the extrusion ratio is 20:1.
4. The method for producing a high-plasticity magnesium alloy material according to claim 3, wherein in S2, the refining temperature is 730 ℃ and the refining time is 10min; cooling to 720 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 30min; then cooling to 710 ℃ for casting;
in S3, the homogenization temperature is 520 ℃ and the homogenization time is as follows: 6h; the extrusion temperature was 200 ℃.
5. The method for preparing a high-plasticity magnesium alloy material according to claim 3, wherein,
s2, refining at 740 ℃ for 13min; cooling to 725 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, then fishing out slag, and standing for 35min; then cooling to 715 ℃ for casting;
in S3, the homogenization temperature is 525 ℃ and the homogenization time is as follows: 8h; the extrusion temperature was 225 ℃.
6. The method for producing a high-plasticity magnesium alloy material according to claim 3, wherein in S2, the refining temperature is 750 ℃ and the refining time is 15min; cooling to 730 ℃ after refining, adding the proportioned pure tin ingot, stirring for 3min, fishing out slag, and standing for 40min; then cooling to 720 ℃ for casting;
in S3, homogenizing temperature is 530 ℃, and homogenizing time is: 10h; the extrusion temperature was 250 ℃.
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Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985714A (en) * | 2010-12-07 | 2011-03-16 | 吉林大学 | High-plasticity magnesium alloy and preparation method thereof |
| CN104404330A (en) * | 2014-12-03 | 2015-03-11 | 东南大学 | High-strength high-plasticity rare earth magnesium alloy and preparation method and application thereof |
| CN109280827A (en) * | 2017-07-19 | 2019-01-29 | 北京普润医疗器械有限公司 | Anastomosis staple and its preparation method and application |
| CN114752833A (en) * | 2022-04-21 | 2022-07-15 | 重庆大学 | Ultrahigh-plasticity Mg-RE-Zr magnesium alloy and preparation method of wrought material thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| JP5089945B2 (en) * | 2006-09-14 | 2012-12-05 | 国立大学法人 熊本大学 | High strength magnesium alloy with high corrosion resistance |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101985714A (en) * | 2010-12-07 | 2011-03-16 | 吉林大学 | High-plasticity magnesium alloy and preparation method thereof |
| CN104404330A (en) * | 2014-12-03 | 2015-03-11 | 东南大学 | High-strength high-plasticity rare earth magnesium alloy and preparation method and application thereof |
| CN109280827A (en) * | 2017-07-19 | 2019-01-29 | 北京普润医疗器械有限公司 | Anastomosis staple and its preparation method and application |
| CN114752833A (en) * | 2022-04-21 | 2022-07-15 | 重庆大学 | Ultrahigh-plasticity Mg-RE-Zr magnesium alloy and preparation method of wrought material thereof |
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