CN104131143B - A kind of method preparing magnesium alloy ultrathin band - Google Patents
A kind of method preparing magnesium alloy ultrathin band Download PDFInfo
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- CN104131143B CN104131143B CN201310411975.9A CN201310411975A CN104131143B CN 104131143 B CN104131143 B CN 104131143B CN 201310411975 A CN201310411975 A CN 201310411975A CN 104131143 B CN104131143 B CN 104131143B
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- magnesium alloy
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Abstract
The present invention is a kind of method preparing magnesium alloy ultrathin band.First solid solution magnesium alloy ingot is carried out shrend under inert gas shielding after 723 803K are incubated 24 hours, ingot blank is carried out solutionizing process；The ingot casting of solution treatment being cut into desired thickness size, carries out multi-pass rolling at thermal process status, then total deflection need to carry out the annealing of 30 minutes more than 60% to hot rolled plate at 673 773K.At ambient temperature, annealing hot rolled plate is carried out cold rolling more than 50% of the first pass deformation, can be by one or multi-channel ultra-thin band (paper tinsel) material time being cold rolled to different-thickness.Maximum reduction can reach 95%, rolls and can reach 1000% to elongation.Cold rolling superthin band is in addition to the limit caused due to heavy reduction occur and splitting, and integral surface is intact.Available high-quality magnesium alloy ultrathin band in uniform thickness after cutting edge.Cold-reduced sheet uniform small grains after annealing, excellent in mechanical performance.
Description
Technical field
The present invention relates to magnesium alloy manufacture field, a kind of cold rolling is for magnesium alloy ultrathin band
Method.
Background technology
Along with the lightweights such as automobile, Aeronautics and Astronautics, electronics and office system and earth environmental issue
Demand, the development and application of wrought magnesium alloy increasingly receives publicity.Produce although China is magnesium and exports greatly
State, but magnesium alloy plate (carrying) material, the particularly field of electronics of some precision, high-power magnesium anode
Field of batteries and aerospace field need the thickness the being applied to ultra-thin magnesium alloy plate (carrying) less than 0.5mm
The most dependence on import of the deep processed products such as material.And produce the thickness ultra-thin magnesium alloy less than 0.5mm the most both at home and abroad
The last rolling sequence of plate (carrying) material is both needed to hot rolling, is aided with intermediate annealing.But, at magnesium alloy sheet
In production process, the rolling of below 1mm magnesium plate is easiest to crackle occur, and its reason is that commercial production is conventional can
Inverse milling train, thinning with magnesium plate, magnesium alloy experienced by the cooling operation of rolling, and during finish to gauge, roller temperature is inadequate.Cause
How this, realize preparing magnesium alloy plate (carrying) material, particularly ultra thin plate (carrying) by quick cold-rolling process
Material, and then ultra thin plate (carrying) material of high-volume production high formability continuously, be to realize being added magnesium alloy by primary
Work advances key to field of deep.
At present, magnesium and magnesium alloy ultrathin plate (carrying) are prepared generally by hot rolling technology, and every time is both needed to add
Heat insulation, i.e. wastes the energy, and grain refining effect is limited.
Summary of the invention
For above-mentioned weak point present in prior art, the technical problem to be solved in the present invention is to provide
A kind of cold rolling is less than the method for the magnesium alloy ultrathin band of 0.5mm, the ultra-thin magnesium alloy plate of preparation for thickness
(carrying) material crystal grain is tiny, even tissue, and defect is few.
The present invention adopts the following technical scheme that:
A kind of method preparing magnesium alloy ultrathin band, comprises the following steps:
1) ingot casting solutionizing processes
Solid solution magnesium alloy ingot is incubated 24 hours at 723-803K under inert gas shielding, then enters
Row shrend, carries out solutionizing process to ingot casting；
2) slab hot-rolling cogging
The ingot casting that solutionizing processes is cut into thickness carries out hot rolling deformation more than the sheet material of 2.5mm and to thickness be
About 1mm, meets hot rolling total deformation minimum 60%, and hot-rolled temperature is set as between 677-727K；
Then hot rolled plate carries out the annealing of 30 minutes at 673-773K；
3) ultra-thin strip cold-rolling treatment
At ambient temperature, to step 2) to carry out the first pass deformation be more than 50% to annealing hot rolled plate
Rolling, can be cold rolled to the ultra-thin strip that thickness is 0.05mm-0.5mm, under stagnation pressure by one or multi-channel time
Amount can reach 95%.
Further, described solid solution magnesium alloy uses pure Mg, Er element Mg-4Er in mass ratio to join
The alloy of system；Or use pure Mg, Zn element, in mass ratio Mg-1Zn to carry out the alloy prepared；Or use
Pure Mg, Dy element, Mg-6Dy in mass ratio carries out the alloy prepared；Or use pure Mg, Al element, press
Mass ratio Mg-1Al carries out the alloy prepared.
Further, step 2) in, hot rolling carries out multi-pass rolling, every time deformation amount controlling 10% with
Under, and it is aided with intermediate annealing.
Further, in step 3), the first pass deformation meets 50%～70%.
Present invention have the advantage that and beneficial effect:
This employing uses less step and at room temperature realizes the preparation of magnesium alloy ultrathin band, owing to using
Hot rolling cogging, cold rolling superthin processes, has saved the energy, and cold rolling superthin band is except occurring drawing due to heavy reduction
Outside the limit risen is split, integral surface is intact.High-quality magnesium alloy ultrathin band can be obtained after cutting edge.After annealing cold
Roll plate uniform small grains, excellent in mechanical performance.
By the detection to surface topography and thickness, the magnesium alloy ultrathin thickness of strip obtained is less than 0.5mm,
This band crystal grain is tiny, even tissue, and defect is few, and basal plane texture weakens.Due to the tiny therefore mechanics of crystal grain,
The performances such as corrosion-resistant and electrochemistry are improved.
The present invention develops material and technique, this work of the magnesium alloy with high room temperature rolling deformability
The room temperature rolling for realizing magnesium alloy of skill research and development, has obtained the cold rolling superthin plate (paper tinsel) of excellent performance.This is cold
Roll magnesium alloy sheet and can be processed into the product of various ways, automobile, 3C industry and Aero-Space have extensively
Application.
Mg-Er, Mg-Zn alloy price comparison is cheap, and material preparation process is simple, and alloy uses conventional work
Skill can realize.Industrialization investment may utilize existing equipment, low investment for general factory.
Magnesium at room temperature deforms and relies primarily on basal plane { 0001} sliding and the conical surface are twin.And through solution treatment
Magnesium alloy annealing texture after hot rolling weakens, and under the first big strain rate of passage, rolling direct stress can make 1mm
In thick SPHC, different positions all produces that substantial amounts of { 10-11} compression is twin, and substantial amounts of { 10-11} compresses
Twin generation can change crystal grain orientation so that crystal grain be conducive to producing basal plane 0001} sliding and the conical surface are twin,
And then realize uniform plastic deformation.
Accompanying drawing explanation
Fig. 1 is the aobvious of the Mg-4Er alloy ultra-thin strip (673K/30min annealing) of the embodiment of the present invention 1
Micro-assembly robot；
Fig. 2 be the embodiment of the present invention 1 solutionizing Mg-4Er alloy thickness be the magnesium alloy ultrathin band of 0.05mm
Material.
Detailed description of the invention
Below in conjunction with the accompanying drawings and the present invention is described in detail by embodiment:
Solid solution magnesium alloy ingot is incubated under inert gas shielding by the present invention at absolute temperature 723-803K
24 hours, then carry out shrend, ingot casting is carried out solutionizing process；The ingot casting that solutionizing processes is cut into thickness
It is about 1mm that the degree sheet material more than 2.5mm carries out hot rolling deformation to thickness, and hot rolling carries out multi-pass rolling,
Every time deformation amount controlling 10% once, and is aided with intermediate annealing, meets hot rolling total deformation minimum 60
%, hot-rolled temperature is set as between 677-727K；Then hot rolled plate carries out 30 minutes at 673-773K
Annealing；At ambient temperature, to step 2) annealing hot rolled plate carries out the first pass deformation and is
The rolling of 50%～70%, can be cold rolled to, by one or multi-channel time, the ultra-thin band that thickness is 0.05mm-0.5mm
Material, overall reduction can reach 95%.Roll and can reach 1000% to elongation.Cold rolling superthin band except occur by
Outside the limit that heavy reduction causes is split, integral surface is intact, i.e. can get high-quality magnesium alloy and surpass after cutting edge
Thin strip
Embodiment 1
Use pure Mg element, Er element, carry out alloyage by Mg-4Er (mass ratio).By solid solution magnesium
Alloy cast ingot is incubated 24 hours at 773K under inert gas shielding, then carries out shrend, carries out ingot casting
Solutionizing processes.The ingot blank that solutionizing processes being cut into 4mm thickness and carries out hot rolling deformation, hot-rolled temperature is absolute
Temperature is 667K, and hot rolling carries out multi-pass rolling, and every time deformation amount controlling is 10%, and is aided with centre and moves back
Fire, total deformation reaches 75%, and sheet metal thickness is rolled to about 1mm, then enters at absolute temperature 673K
The row annealing of 30 minutes is to improve the plasticity of sheet material.At ambient temperature, annealing hot rolled plate is carried out
First pass deformation be 50% cold rolling, can be cold rolled to, by multi-pass, the ultra-thin band that thickness is 0.05mm
(paper tinsel) material.Overall reduction can reach 95%, rolls and can reach 1000% to elongation.To the magnesium alloy obtained
Ultra-thin strip carries out microstructure observation, as it is shown in figure 1, structure crystal grain is tiny, and even tissue, defect is few,
Basal plane texture weakens.
As in figure 2 it is shown, cold rolling superthin band is in addition to the limit caused due to heavy reduction occur and splitting, integral surface
Intact, i.e. can get high-quality magnesium alloy ultrathin band after cutting edge.
Embodiment 2
Use pure Mg element, Zn element, carry out alloyage by Mg-1Zn (mass ratio).By consolidating of preparation
Solution type magnesium alloy ingot is incubated 24 hours at 723K under inert gas shielding, then carries out shrend, right
Ingot blank carries out solutionizing process.The ingot blank that solutionizing processes is cut into 8mm thickness and carries out hot rolling deformation, hot rolling
Temperature is 800K, and hot rolling carries out multi-pass rolling, and every time deformation amount controlling is 9%, and is aided with centre and moves back
Fire, total deformation reaches 150%, and sheet metal thickness is rolled to about 1mm, then carries out 30 points at 690K
The annealing of clock is to improve the plasticity of sheet material.At ambient temperature, annealing hot rolled plate is carried out first
Secondary deflection 60% cold rolling, can be cold rolled to, by multi-pass, ultra-thin band (paper tinsel) material that thickness is 0.1mm.
Maximum reduction can reach 95%, rolls and can reach 1000% to elongation.Cold rolling superthin band except occur due to
Outside the limit that heavy reduction causes is split, integral surface is intact, i.e. can get high-quality magnesium alloy ultrathin after cutting edge
Band.
By detecting the magnesium alloy ultrathin band SEM obtained, structure crystal grain is tiny, even tissue, defect
Few, basal plane texture weakens.
Embodiment 3
Use pure Mg element, Dy element, carry out alloyage by Mg-6Dy (mass ratio).By solid solution
Magnesium alloy ingot is incubated 24 hours at 803K under inert gas shielding, then carries out shrend, enters ingot blank
Row solutionizing processes.The ingot blank that solutionizing processes being cut into 6mm thickness and carries out hot rolling deformation, hot rolling carries out many
Passes, every time deformation amount controlling is 5%, and is aided with intermediate annealing, and total deformation reaches 90%, will
Sheet metal thickness is rolled to about 1mm, then carries out the annealing of 30 minutes at 773K to improve sheet material
Plasticity.At ambient temperature, annealing hot rolled plate is carried out the cold rolling of the first pass deformation 70%, can lead to
Cross a time and be cold rolled to ultra-thin band (paper tinsel) material of thickness.Overall reduction can reach 95%, and rolling can to elongation
Reach 1000%.Cold rolling superthin band is in addition to the limit caused due to heavy reduction occur and splitting, and integral surface is intact,
High-quality magnesium alloy ultrathin band is i.e. can get after cutting edge.
By detecting the magnesium alloy ultrathin band SEM obtained, structure crystal grain is tiny, even tissue, defect
Few, basal plane texture weakens.
Embodiment 4
Use pure Mg element, Al element, carry out alloyage by Mg-1Al (mass ratio).By solid solution magnesium
Alloy cast ingot is incubated 24 hours at 773K under inert gas shielding, then carries out shrend, carries out ingot casting
Solutionizing processes.The ingot blank that solutionizing processes being cut into 4mm thickness and carries out hot rolling deformation, hot rolling carries out multiple tracks
Secondary rolling, every time deformation amount controlling is 5%, and is aided with intermediate annealing, and total deformation reaches more than 75%,
Sheet metal thickness is rolled to about 1mm, then carries out the annealing of 30 minutes at 673K to improve sheet material
Plasticity.At ambient temperature, annealing hot rolled plate is carried out the cold rolling of the first pass deformation 65%, can
It is cold rolled to ultra-thin band (paper tinsel) material by one or multi-channel time.Overall reduction can reach 95%, rolls to elongation
Can reach 1000%.Cold rolling superthin band is in addition to the limit caused due to heavy reduction occur and splitting, and integral surface is complete
Good, i.e. can get high-quality magnesium alloy ultrathin band after cutting edge.
Embodiment 5
Use pure Mg element, Sn element, carry out alloyage by Mg-1Sn (mass ratio).By solid solution
Magnesium alloy ingot is incubated 24 hours at 763K under inert gas shielding, then carries out shrend, enters ingot blank
Row solutionizing processes.The ingot blank that solutionizing processes being cut into 4mm thickness and carries out hot rolling deformation, hot rolling carries out many
Passes, every time deformation amount controlling is 10%, and is aided with intermediate annealing, total deformation reach 75% with
On, sheet metal thickness is rolled to about 1mm, then carries out the annealing of 30 minutes at 693K to improve
The plasticity of sheet material.At ambient temperature, annealing hot rolled plate is carried out the first pass deformation and be more than 50%
Cold rolling, can be by one or multi-channel secondary ultra-thin band (paper tinsel) material being cold rolled to different-thickness.Overall reduction up to
To 90%, roll and can reach 900% to elongation.The limit that cold rolling superthin band causes due to heavy reduction except appearance
Outside splitting, integral surface is intact, i.e. can get high-quality magnesium alloy ultrathin band after cutting edge.
Cold rolling superthin band is in addition to the limit caused due to heavy reduction occur and splitting, and integral surface is intact, after cutting edge
I.e. can get high-quality magnesium alloy ultrathin band.
Claims (3)
1. the method preparing magnesium alloy ultrathin band, it is characterised in that comprise the following steps:
1) ingot casting solutionizing processes
Solid solution magnesium alloy ingot is incubated 24 hours at 723-803K under inert gas shielding, then enters
Row shrend, carries out solutionizing process to ingot casting；
2) slab hot-rolling cogging
The ingot casting that solutionizing processes is cut into thickness carries out hot rolling deformation more than the sheet material of 2.5mm and to thickness be
About 1mm, meets hot rolling total deformation minimum 60%, and hot-rolled temperature is set as between 677-727K；
Then hot rolled plate carries out the annealing of 30 minutes at 673-773K；
3) ultra-thin strip cold-rolling treatment
At ambient temperature, to step 2) to carry out the first pass deformation be more than 50% to annealing hot rolled plate
Rolling, is cold rolled to the ultra-thin strip that thickness is 0.05mm-0.5mm, overall reduction by one or multi-channel time
Can reach 95%；
Described solid solution magnesium alloy uses pure Mg, Er element Mg-4Er in mass ratio to carry out the alloy prepared；
Or use pure Mg, Zn element, in mass ratio Mg-1Zn to carry out the alloy prepared；Or use pure Mg, Dy
Element, in mass ratio Mg-6Dy carry out the alloy prepared；Or use pure Mg, Al element, in mass ratio
Mg-1Al carries out the alloy prepared.
2. according to the method preparing magnesium alloy ultrathin band described in claim 1, it is characterised in that step
2) in, hot rolling carries out multi-pass rolling, and every time deformation amount controlling is below 10%, and is aided with intermediate annealing.
3. according to the method preparing magnesium alloy ultrathin band described in claim 1, it is characterised in that step
3) in, the first pass deformation meets 50%～70%.
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| CN201310411975.9A CN104131143B (en) | 2013-09-11 | 2013-09-11 | A kind of method preparing magnesium alloy ultrathin band |
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| CN104131143B true CN104131143B (en) | 2016-11-09 |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| 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 |
| CN105234174B (en) * | 2015-08-31 | 2017-04-05 | 东北大学 | A kind of milling method of magnesium and magnesium alloy strip in razor-thin |
| CN106994464A (en) * | 2016-01-26 | 2017-08-01 | 中国科学院金属研究所 | A kind of cold-rolling production process of pure magnesium or magnesium alloy foil |
| CN107747071B (en) * | 2017-10-20 | 2019-05-10 | 西北工业大学 | High-strength modeling AlN/AZ91D composite material short route milling method |
| CN107805769B (en) * | 2017-11-02 | 2019-05-10 | 西北工业大学 | The rolling of high-performance AlN/AZ91D magnesium-based composite material and heat treatment method |
| CN111647832B (en) * | 2020-06-15 | 2021-04-20 | 宿迁市河海大学研究院 | Method for circularly rolling and annealing pure magnesium plate |
| CN114134302B (en) * | 2021-12-03 | 2023-01-03 | 西安交通大学 | Layered magnesium-magnesium matrix composite plate and preparation method and application thereof |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274332A (en) * | 2008-02-22 | 2008-10-01 | 中南大学 | Moulding method of magnesium alloy ultrathin sheet material |
| CN102321836A (en) * | 2011-10-12 | 2012-01-18 | 中南大学 | Method for preparing high-strength heat-resistant magnesium alloy sheet |
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101274332A (en) * | 2008-02-22 | 2008-10-01 | 中南大学 | Moulding method of magnesium alloy ultrathin sheet material |
| CN102321836A (en) * | 2011-10-12 | 2012-01-18 | 中南大学 | Method for preparing high-strength heat-resistant magnesium alloy sheet |
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