CN109161758A - A kind of high-strength high-plasticity magnesium alloy composite board and preparation method - Google Patents
A kind of high-strength high-plasticity magnesium alloy composite board and preparation method Download PDFInfo
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- CN109161758A CN109161758A CN201811079848.2A CN201811079848A CN109161758A CN 109161758 A CN109161758 A CN 109161758A CN 201811079848 A CN201811079848 A CN 201811079848A CN 109161758 A CN109161758 A CN 109161758A
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- 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
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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
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Abstract
The present invention provides a kind of high-strength high-plasticity magnesium alloy composite board and preparation method, the magnesium alloy plate ingredient is made of Mg, Al, Zn, Mn, Si, Cu, Fe, the excellent in mechanical performance such as intensity and plasticity, the room temperature elongation percentage of plate is not less than 21%, surface vickers microhardness is not less than 126Hv, and tensile strength is not less than 270.9MPa.Method of the present invention, handled by mixing yoghurt, shot blasting on surface and etc. acquisition, it is final to realize the product with excellent mechanical properties.Raw material of the present invention rolls plate using Magnesium Alloy Industry grade, and production technology is relatively simple, and plate overall performance is obviously improved.
Description
Technical field
The invention belongs to field of material technology, and in particular to a kind of high-strength high-plasticity magnesium alloy composite board and preparation side
Method.
Background technique
Magnesium alloy due to the features such as density is low, specific stiffness and specific strength performance are good, and electromagnetic shielding performance is good extensive Ying Yu in
Machinery, in automobile and electronics industry.But due to magnesium alloy close-packed hexagonal structure and the lesser feature of slip system, the plasticity of magnesium alloy
Deformability is poor, therefore the processing and forming to magnesium alloy cause a degree of limitation.According to Hall-Petch, (crystal grain is thin
Change) formula, magnesium alloy strength and plasticity increase after crystal grain refinement, realize Strengthening and Toughening.Therefore magnesium alloy grains
Practical technology becomes the hot spot of current research.
Mainly fining agent and the big plastic deformability method of solid-state is added in oriented magnesium alloy fused mass to the method for crystal grain refinement at present.
Wherein mixing yoghurt is than more typical large plastometric set method.Mixing yoghurt technology is welded by agitating friction
Principle, using the rubbing action of mixing needle and the shaft shoulder and workpiece, production huge shearing force and heat input are that plasticity occurs for material
Deformation and dynamic recrystallization, so that crystal grain is refined, thus the tissue for obtaining densification and haveing excellent performance.But it is stirred friction processing
Afterwards, texture attenuation can occur for Magnesium Alloy, and intensity will appear a degree of reduction.
The texture attenuation of Magnesium Alloy, the technology of strength reduction are difficult caused by how overcoming because of agitating friction technique
Topic, then be technical problem to be solved by this invention
Summary of the invention
The present invention provides a kind of high-strength high-plasticity magnesium alloy composite board and preparation method, to solve institute in background technique
The problem of description, structure, method difference are as follows:
A kind of high-strength high-plasticity magnesium alloy composite board, the composite board are rectangular slab, and section is by ultrafine-grained (UFG) microstructure
Layer 1, fine grain reinforcing rib organized layer 2, basic plate organized layer 3 are constituted；
Ultrafine-grained's layer 1 is equipped in the bottom surface of basic plate organized layer 3；V is equipped in the top surface of basic plate organized layer 3
Or U-lag, fine grain reinforcing rib organized layer 2 is equipped in the V or U-lag of basic plate organized layer 3, in basic plate organized layer 3
Top surface be equipped with original structure reinforcing rib 4, in original structure reinforcing rib 4, basic plate organized layer 3 and/or fine grain reinforcing rib group
The top surface of tissue layer 2 is equipped with ultrafine-grained's layer 1.
Furtherly, basic plate organized layer 3 uses the trade mark for the magnesium alloy plate of AZ31, preferred composition quality percentage
Than as follows: Al 2.57%, Zn 0.84%, Mn 0.32%, Si 0.03%, Cu 0.003%, Fe are
0.006%, remaining is Mg.
A kind of preparation method of high-strength high-plasticity magnesium alloy composite board of the present invention carries out as follows:
Step 1: AZ31 magnesium alloy plate is laid flat and is fixed on milling machine；
Step 2: by stirring-head in mixing yoghurt equipment, mixing yoghurt technological parameter, technique ginseng are debugged
Number includes that direction of rotation is 60~90mm/min of feed speed, 600~1200r/min of rotation speed clockwise, volume under pressure
0.5~1mm.
Step 3: adjustment mixing yoghurt initial position carries out the first passage processing since one end of plate；The
When a second processing, mixing needle slowly screws in magnesium alloy plate from plate front end, until the shaft shoulder lower than plate surface 0.5~
1mm is processed after stopping 5~6s along panel length direction；After completing the processing of the first passage, stirring-head returns to initial bit
It sets, moves a certain distance s perpendicular to the first passage machine direction side of drawing back, carry out the second passage processing；Mixing yoghurt
After complete a time, original plate height can be higher than mixing yoghurt region, and the protrusion part original plate tissue is as original
Plate reinforcing rib tissue 4；
Step 4: the processing of n passage, n >=3 are repeated in the way of step 3；Area of the plate after mixing yoghurt
Domain is fine grain reinforcing rib organized layer 2.
Step 5: by after mixing yoghurt magnesium alloy plate upper layer and bottom carry out bead, given birth to by this step
At " ultrafine-grained's layer 1, it is final to obtain high-strength high-plasticity magnesium alloy plate.
Beneficial technical effect
Raising while can be realized magnesium alloy plate plasticity and intensity using the present invention.And this method process is object
Reason processing, it is easy to operate, without increasing fining agent, save material.
Traditional mixing yoghurt method can make magnesium alloy grains, and structure property is greatly improved, but
There is a degree of reduction in the texture attenuation intensity of tissue, and this method carries out tissue after mixing yoghurt at shot-peening
Reason can avoid texture attenuation effect, improve the intensity of magnesium alloy plate entirety.
Compared to the processing method of traditional large plastometric set refinement crystal grain, this method is easy to operate, and has significant
Grain refining effect.
The characteristics of strength of materials or plasticity can only individually be improved the invention avoids conventional machining process, it is strong to realize material
It is improved while degree and moulding.
The plate that the present invention prepares has multilayered structure, is conducive to the whole performance for improving magnesium alloy.
It needs to protrude, it is noted that being formed by structure using the method for the present invention, plate surface layer fine grain strengthens tissue
It can inhibit or postpone forming core and the extension of fatigue crack, the time for delaying material failure, cracking extends the material military service longevity
Life.
The method that the present invention uses the superposition of mixing yoghurt multi-pass is conducive to improve plate degree of grain refinement.
Detailed description of the invention
Fig. 1 is the skeleton symbol figure that the first non-intersecting fine grain of structure strengthening tendons organized layer 2 of the invention adds.
Fig. 2 is the skeleton symbol figure that another structure strengthening tendons organized layer 2 of the invention intersects that fine grain adds.
Fig. 3 is high-strength and high-plasticity plate and original plate tensile mechanical properties curve of the present invention.
Specific embodiment
Now in conjunction with attached drawing the design feature and technical advantage that the present invention is further explained.
Referring to Fig. 1 or 2, a kind of high-strength high-plasticity magnesium alloy composite board, the composite board be rectangular slab, section by
Ultrafine-grained's layer 1, fine grain reinforcing rib organized layer 2, basic plate organized layer 3 are constituted；
Ultrafine-grained's layer 1 is equipped in the bottom surface of basic plate organized layer 3；V is equipped in the top surface of basic plate organized layer 3
Or U-lag, fine grain reinforcing rib organized layer 2 is equipped in the V or U-lag of basic plate organized layer 3, in basic plate organized layer 3
Top surface be equipped with original structure reinforcing rib 4, in original structure reinforcing rib 4, basic plate organized layer 3 and/or fine grain reinforcing rib group
The top surface of tissue layer 2 is equipped with ultrafine-grained's layer 1.
Furtherly, basic plate organized layer 3 uses the trade mark for the magnesium alloy plate of AZ31, preferred composition quality percentage
Than as follows: Al 2.57%, Zn 0.84%, Mn 0.32%, Si 0.03%, Cu 0.003%, Fe are
0.006%, remaining is Mg.
Furtherly, ultrafine-grained's layer 1 is gradient structure.The gradient structure is after bead in material
The tissue that surface is formed.The tissue thickness is at 200 μm or so.Because material surface plastic deformation is more violent, but internal plasticity
Deformation extent is smaller.From material surface to material internal, crystal grain is increasing, and microhardness gradually decreases, and change of gradient is presented.
The grain size of ultrafine-grained's layer 1 is 200~300nm；Bottom portion of groove arc area is fine grained texture, and Fig. 2 is arc area
The structural schematic diagram of intersection；Fig. 1 is that the grain form of arc area non-intersecting fine grain reinforcing rib organized layer 2 is tiny isometric
Crystalline substance, the grain size of fine grain reinforcing rib organized layer 2 are 5~10 μm；Basic plate organized layer 3 and/or original structure reinforcing rib 4
Grain size is 15~30 μm.The present invention utilizes ultrafine-grained's layer 1, fine grain reinforcing rib organized layer 2, basic plate organized layer 3
It is of different sizes with the respective grain size of original structure reinforcing rib 4, thus when metal deforms, it can be mutually coordinated, especially
Original structure reinforcing rib 4, i.e. original plate tissue convex portion, play the role of reinforcing rib, have whole plate higher strong
Degree and elongation percentage.
Furtherly, this review plate general thickness is 5~10mm, the thickness of ultrafine-grained's layer 1 of top and bottom
It is 50~200 μm.The top surface of basic plate organized layer 3 is equipped with V or the section edges of U-lag are arc-shaped, and in other words, fine grain adds
The section shape of strengthening tendons organized layer 2 is equally arc-shaped, and the arc area is innermost with a thickness of this composite board general thickness
80%~90%, being left metal structure is original plate.
Furtherly, plate property are as follows: plate surface microhardness is 126Hv, and plate elongation percentage is at room temperature
20%~30%, tensile strength is 260~350MPa；Compared with the original plate that the trade mark is AZ31, room temperature elongation 3~10% resists
245~274.4MPa of tensile strength, performance significantly improve.
Furtherly, 3 or more original structure reinforcing rib 4, original structure are equipped in the top surface of basic plate organized layer 3
The length direction of reinforcing rib 4 is parallel with the length direction of basic plate organized layer 3, between adjacent original structure reinforcing rib 4
Basic plate organized layer 3 top surface be equipped with 1 or more V or U-lag, in V or U-lag be equipped with fine grain reinforcing rib organized layer
2, the top surface of fine grain reinforcing rib organized layer 2 and the top surface of original plate reinforcing rib layer 4 are parallel to each other；In fine grain reinforcing rib organized layer
2 and the top surface of original plate reinforcing rib layer 4/ or basic plate organized layer 3 be equipped with ultrafine-grained's layer 1；In basic plate group
The bottom surface of tissue layer 3 is equipped with another layer of ultrafine-grained's layer 1.
Furtherly, the top surface of the basic plate organized layer 3 between adjacent original structure reinforcing rib 4 is equipped with 3 V-arrangements
The edge of slot, adjacent V-shaped groove overlaps；Fine grain reinforcing rib organized layer 2 in the overlapping region of adjacent V-shaped groove is that second level is fine and close
Area is level-one dense area except overlapping region；The grain density of second level dense area is 3.0 to 1.5 times of level-one dense area.
Furtherly, the section of each V-shaped groove is in 2 sections: bottom line segment P and oblique line section X, wherein with arc curve most bottom
End is coordinate origin:
The formula that bottom curve section P meets is y=0.1x4+0.08x2；
The formula that oblique line section X meets is y=| 0.3x |；
The two junction y=0.02x2。
X, y respectively corresponds the coordinate of X-axis, Y direction.
Furtherly, (0001) basal plane of basic plate organized layer (3) and original plate reinforcing rib layer 4 is parallel to the face of rolling,
Basic plate layer tissue is strong basis plane texture.Arc area is mixing yoghurt stirring area, i.e. fine grain reinforcing rib organized layer 2.
Original plate c-axis is basically perpendicular to rolling face, and metal is under stirring-head under pressure and shearing force, fine grain reinforcing rib organized layer 2
Angular deflection occurs for the c-axis of crystal grain, and range of deflection is 10 °~90 °, basal plane texture attenuation.Plate upper and lower surface magnesium alloy ultra-fine
Crystal layer 1 is weak basal plane texture, and under ceramic bead hard hit dynamic recrystallization occurs for metal, and crystal grain significantly refines, and basal plane is knitted
The c-axis of structure reduction, crystal grain tilts to a certain degree along same direction appearance.
A kind of preparation method of high-strength high-plasticity magnesium alloy composite board of the present invention carries out as follows:
Step 1: AZ31 magnesium alloy plate is laid flat and is fixed on milling machine；
Step 2: by stirring-head in mixing yoghurt equipment, mixing yoghurt technological parameter, technique ginseng are debugged
Number includes that direction of rotation is 60~90mm/min of feed speed, 600~1200r/min of rotation speed clockwise, volume under pressure
0.5~1mm.
Step 3: adjustment mixing yoghurt initial position carries out the first passage processing since one end of plate；The
When a second processing, mixing needle slowly screws in magnesium alloy plate from plate front end, until the shaft shoulder lower than plate surface 0.5~
1mm is processed after stopping 5~6s along panel length direction；After completing the processing of the first passage, stirring-head returns to initial bit
It sets, moves a certain distance s perpendicular to the first passage machine direction side of drawing back, carry out the second passage processing；Mixing yoghurt
After complete a time, original plate height can be higher than mixing yoghurt region, and the protrusion part original plate tissue is as original
Plate reinforcing rib tissue 4；
Step 4: the processing of n passage, n >=3 are repeated in the way of step 3；Area of the plate after mixing yoghurt
Domain is fine grain reinforcing rib organized layer 2.
Step 5: by after mixing yoghurt magnesium alloy plate upper layer and bottom carry out bead, by this step shape
At " ultrafine-grained's layer 1, the final finished product for obtaining high-strength high-plasticity magnesium alloy plate.
Furtherly, the specific steps of step 3 are as follows:
Mixing yoghurt is from plate left end (or since right side；If being started with right side, the direction phase of subsequent step
Instead) start, stirring-head slowly pushes magnesium plate with the revolving speed of 600~1200r/min, still pushes after the shaft shoulder and magnesium plate contact
0.5~1mm, after stopping 3~5s, stirring-head is advanced forward with the feed speed of 60~90mm/min, until processing the road
It is secondary, a distance is being moved horizontally, lower a time is processed.
Furtherly, when carrying out step 3, should accomplish:
Corresponding diagram 1 after processing a time, is processed from the starting point side offset certain distance s that draws back along same direction
Lower a time, d is stirring-head shaft shoulder diameter, wherein the distance s deviated meets condition: after processing three passages, should translate d
+ 4mm carries out the processing of three passages below, and when plate thickness is less than 4mm, the offset distance s between adjacent processing passage is full
Sufficient condition: 2/3d≤s≤d；As 4~8mm of plate thickness, the offset distance s between adjacent processing passage meets condition: 1/2d
≦s≦d。
Corresponding diagram 2 after processing a time, is processed from the starting point side offset certain distance s that draws back along same direction
Lower a time, d are stirring-head shaft shoulder diameter, wherein the distance of adjacent passage distance s offset meets condition d+2mm≤s≤d+
5mm。
Furtherly, the cooling condition of mixing yoghurt is water cooling.
Furtherly, the mixing needle of stirring-head is tapered tread shape, and mixing needle inclination angle is 8 °.
Furtherly, prevent mixing needle bottom and milling machine from contacting, the length of mixing yoghurt mixing needle is that plate is whole
The 80%~90% of thickness, the sum of mixing needle length and stirring and processing volume under pressure t are less than the thickness of magnesium alloy plate.
Furtherly, in step 6: in conjunction with the characteristics of AZ31 magnesium alloy materials, blasting media is B30 ceramic pellet, shot-peening
Temperature is 425~600 μm of diameter, hardness 700-740Hv under room temperature, and nozzle is 70mm, spray gun translation at a distance from sample
Distance about 40mm/s, shot peening strength 0.1mmN.
Embodiment one:
Step 1: 6mm thickness magnesium alloy plate is fixed on agitating friction lathe.
Step 2: water spray processing is done to magnesium alloy, is placed in whole mixing yoghurt under water cooling condition.
Step 3: stirring-head slowly pushes magnesium plate with the revolving speed of 1000r/min, still pushes after the shaft shoulder and magnesium plate contact
1mm, after stopping 3~5s, stirring-head is advanced forward with the feed speed of 90mm/min, until covering magnesium alloy plate.
Step 4: completing first of mixing yoghurt, and stirring-head returns to first of initial processing position, the second passage edge
The position that the vertical direction of machine direction retreats side offset 25mm processes back pass.
Step 5: subsequent passage is completed the process according to step 4.
Step 6: bead, in conjunction with the characteristics of AZ31 magnesium alloy materials, shot-peening are carried out to the obverse and reverse of magnesium alloy
Medium is B30 ceramic pellet, and shot-peening temperature is 425~600 μm of diameter, hardness 700-740Hv under room temperature, nozzle and sample
Distance be 70mm, spray gun translation distance is about 40mm/s, shot peening strength 0.1mmN.
In this embodiment, using the magnesium alloy plate ingredient of the method for the present invention by Mg, Al, Zn, Mn, Si, Cu, Fe structure
At the room temperature elongation percentage of the excellent in mechanical performance such as intensity and plasticity, plate is not less than 21%, and surface vickers microhardness is not less than
126Hv, tensile strength are not less than 270.9MPa.Compared with prototype structure, performance is obviously improved, and is detailed in Fig. 3.
Claims (10)
1. a kind of high-strength high-plasticity magnesium alloy composite board, it is characterised in that: the composite board be rectangular slab, section by
Ultrafine-grained's layer (1), fine grain reinforcing rib organized layer (2), basic plate organized layer (3) are constituted；
Ultrafine-grained's layer (1) is equipped in the bottom surface of basic plate organized layer (3)；It is set in the top surface of basic plate organized layer (3)
There are V or U-lag, fine grain reinforcing rib organized layer (2) is equipped in the V or U-lag of basic plate organized layer (3), in basic plate
The top surface of organized layer (3) is equipped with original structure reinforcing rib (4), original structure reinforcing rib (4), basic plate organized layer (3) and/
Or the top surface of fine grain reinforcing rib organized layer (2) is equipped with ultrafine-grained's layer (1).
2. a kind of high-strength high-plasticity magnesium alloy plate according to claim 1, it is characterised in that: basic plate organized layer
(3) use the trade mark for the magnesium alloy plate of AZ31, preferred ingredient percent is as follows: Al 2.57%, Zn are
0.84%, Mn 0.32%, Si 0.03%, Cu 0.003%, Fe 0.006%, remaining be Mg.
3. a kind of high-strength high-plasticity magnesium alloy plate according to claim 1, it is characterised in that: ultrafine-grained's layer
It (1) is gradient structure, the grain size of ultrafine-grained's layer (1) is 200~300nm；Bottom portion of groove arc area is fine grain group
It knits, diagram 1, arc area intersection；Diagram 2, the grain form of arc area non-intersecting fine grain reinforcing rib organized layer (2) are tiny
Equiax crystal, the grain size of fine grain reinforcing rib organized layer (2) is 5~10 μm；Basic plate organized layer (3) and/or original group
The grain size for knitting reinforcing rib (4) is 15~30 μm.
4. a kind of high-strength high-plasticity magnesium alloy composite board according to claim 1, it is characterised in that: this composite board
General thickness is 5~10mm, and the thickness of ultrafine-grained's layer (1) of top and bottom is 50~200 μm.
5. a kind of high-strength high-plasticity magnesium alloy composite board according to claim 1, it is characterised in that: plate property
Are as follows: plate surface microhardness be 126Hv, at room temperature plate elongation percentage be 20%~30%, tensile strength be 260~
350MPa；Compared with the original plate that the trade mark is AZ31, room temperature elongation 3~10%, 245~274.4MPa of tensile strength, performance is bright
It is aobvious to improve.
6. a kind of high-strength high-plasticity magnesium alloy composite board according to claim 1, it is characterised in that: in basic plate
The top surface of organized layer (3) is equipped with 3 or more original structure reinforcing rib (4), the length direction and base of original structure reinforcing rib (4)
The length direction of plinth plate organized layer (3) is parallel, the basic plate organized layer between adjacent original structure reinforcing rib (4)
(3) top surface is equipped with 1 or more V or U-lag, and fine grain reinforcing rib organized layer (2), fine grain reinforcing rib are equipped in V or U-lag
The top surface of organized layer (2) and the top surface of original plate reinforcing rib layer (4) are parallel to each other；In fine grain reinforcing rib organized layer (2) and original
The top surface of beginning plate reinforcing rib layer (4)/or basic plate organized layer (3) is equipped with ultrafine-grained's layer (1)；In basic plate group
The bottom surface of tissue layer (3) is equipped with another layer of ultrafine-grained's layer (1).
7. a kind of high-strength high-plasticity magnesium alloy composite board according to claim 6, it is characterised in that: in adjacent original
The top surface of basic plate organized layer (3) between beginning tissue reinforcing rib (4) is equipped with 3 V-shaped grooves, and the edge of adjacent V-shaped groove is mutual
It is overlapped；Fine grain reinforcing rib organized layer (2) in the overlapping region of adjacent V-shaped groove is second level dense area, is except overlapping region
Level-one dense area；The grain density of second level dense area is 3.0 to 1.5 times of level-one dense area.
8. a kind of high-strength high-plasticity magnesium alloy composite board according to claim 6, it is characterised in that: each V-shaped groove
Section be in 2 sections: bottom line segment P and oblique line section X, wherein
Using arc curve lowermost end as coordinate origin:
The formula that bottom curve section P meets is y=0.1x4+0.08x2；
The formula that oblique line section X meets is y=| 0.3x |；
The two junction y=0.02x2。
9. a kind of high-strength high-plasticity magnesium alloy composite board according to claim 1, it is characterised in that: basic plate group
(0001) basal plane of tissue layer (3) and original plate reinforcing rib layer (4) is parallel to the face of rolling, and basic plate layer tissue is that strong basis face is knitted
Structure.
10. a kind of preparation method of any high-strength high-plasticity magnesium alloy composite board of claim 1 to 9, feature
It is: carries out as follows:
Step 1: AZ31 magnesium alloy plate is laid flat and is fixed on milling machine；
Step 2: by stirring-head in mixing yoghurt equipment, mixing yoghurt technological parameter, technological parameter packet are debugged
Direction of rotation is included as clockwise direction, 60~90mm/min of feed speed, 600~1200r/min of rotation speed, volume under pressure 0.5
~1mm.
Step 3: adjustment mixing yoghurt initial position carries out the first passage processing since one end of plate；First
When secondary processing, mixing needle slowly screws in magnesium alloy plate from plate front end, until the shaft shoulder is lower than 0.5~1mm of plate surface, stops
After staying 5~6s, processed along panel length direction；After completing the processing of the first passage, stirring-head returns to initial position, vertically
S is moved a certain distance in the first passage machine direction side of drawing back, and carries out the second passage processing；The complete a time of mixing yoghurt
Afterwards, original plate height can be higher than mixing yoghurt region, which is that original plate is reinforced
Muscle tissue (4)；
Step 4: the processing of n passage, n >=3 are repeated in the way of step 3；Region of the plate after mixing yoghurt is
For fine grain reinforcing rib organized layer (2).
Step 5: by after mixing yoghurt magnesium alloy plate upper layer and bottom carry out bead, obtain high-strength high-plasticity
Property magnesium alloy plate.
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| CN112853239A (en) * | 2020-12-22 | 2021-05-28 | 山东理工大学 | Gradient structure and reinforced layer of surface of superfine crystal magnesium alloy plate and preparation method thereof |
| CN113005377A (en) * | 2021-02-19 | 2021-06-22 | 长沙学院 | Processing method for improving discharge performance of magnesium anode |
| WO2023077300A1 (en) * | 2021-11-03 | 2023-05-11 | 黄山学院 | Method for modifying surface performance of lightweight alloy |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112853239A (en) * | 2020-12-22 | 2021-05-28 | 山东理工大学 | Gradient structure and reinforced layer of surface of superfine crystal magnesium alloy plate and preparation method thereof |
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| CN113005377A (en) * | 2021-02-19 | 2021-06-22 | 长沙学院 | Processing method for improving discharge performance of magnesium anode |
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| WO2023077300A1 (en) * | 2021-11-03 | 2023-05-11 | 黄山学院 | Method for modifying surface performance of lightweight alloy |
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