CN103643190A - Method for improving plastic deformation capacity of aluminum matrix composite - Google Patents
Method for improving plastic deformation capacity of aluminum matrix composite Download PDFInfo
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- CN103643190A CN103643190A CN201310686562.1A CN201310686562A CN103643190A CN 103643190 A CN103643190 A CN 103643190A CN 201310686562 A CN201310686562 A CN 201310686562A CN 103643190 A CN103643190 A CN 103643190A
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Abstract
The invention relates to the technical field of preparation of a high-plasticity aluminum matrix composite, and particularly relates to a method for improving the plastic deformation capacity of an aluminum matrix composite. By applying a magnetic field to the aluminum matrix composite and controlling the magnetic field type, magnetic induction intensity, acting time of magnetic field, phase relation between magnetic field and stress field, temperature of the aluminum matrix composite and strain rate of the aluminum matrix composite, the elongation of the aluminum matrix composite is remarkably improved.
Description
Technical field
The present invention relates to the preparing technical field of high-ductility aluminum matrix composite, particularly a kind of method that improves aluminum matrix composite plastic deformation ability.
Background technology
Plastic forming of metals be take material high-ductility as prerequisite and is carried out under external force, and from the angle of plastic forming of metals, having high-ductility deformability will be one of considerable advantage of material; But well-known, for metallic substance, the association often of high strength and inductile, in actual production, often need " high strength, inductile " material to carry out viscous deformation processing, object is to improve product size or improves material over-all properties, and the approach of therefore exploring this type of material plasticity deformability of effective raising is very urgent; In the high-performance aluminium research receiving much concern and Application Areas, before aluminum matrix composite occurs, the research and development of aluminium and application are mainly concentrated on to different series aluminium alloy aspect, strengthening mechanism relates generally to the aspects such as solution strengthening, precipitation hardened, refined crystalline strengthening, and the obdurability of material and Young's modulus rest on a not too high limit level in a long time; Each main support industry of country has proposed active demand to the tough aluminium of high-strength light as developing rapidly of track traffic, military and national defense in the recent decade, under this application background, aluminum matrix composite arises at the historic moment, wherein in-situ endogenic particle enhanced aluminum-based composite material has met the external and domestic demand of " high-performance, high-level efficiency, low cost, the low pollution " of research and development new material new process indispensability, and day by day receives publicity; From tissue signature, endogenetic particle size is tiny and easily control, matrix is combined with granular boundary well, no coupling product generates, material has the use properties of comprehensive excellence, comprise high specific strength, high specific stiffness, high ratio modulus, high abrasion, highly corrosion resistant, low-thermal-expansion (good stability of the dimension) etc., in field extensive application prospects such as track traffic, aerospace, military equipment, electron devices; But research is also found simultaneously: because the existence of hard particles has weakened material plasticity deformability, the ductility of matrix material is far away from body material, largely, limit matrix material at more range and the more use of degree of depth aspect, therefore urgently found an effective way that can improve matrix material plastic deformation ability to make up the poor critical defect of its plastic deformation ability.
At present, the research directly related with material high-ductility deformability is superplastic material; Making metal implement is mainly make it that specific tissue degeneratiaon occur and obtain the axle superfine crystal particle such as stable below crystal grain diameter 10 μ m for superplastic method; The normal logical excessive strain of drastic deformation method that adopts realizes matrix grain nanometer and superplasticity, patent: CN200810230081.9 preparation method of fine crystalline superplastic heat-resistance magnesium alloy; Patent CN200710011887.4 method for preparing short-flowpath fine crystal super-plastic material; The metal material large-strain processing method of patent CN200910183585.4 based on multipair wheel rolling and Equal-channel Angular Pressing, the temperature when controlling and optimizing superplastic deformation, strain rate, type of heating etc. make metal more easily obtain superplasticity; But the analysis to above-mentioned patent is known: by drastic deformation, realize crystal grain nanometer and superplastic method is only suitable in the good alloy of ductility, such as distortion aluminium, magnesium and titanium alloy etc., in other words: realize by crystal grain nanometer that plasticity improves or superplastic approach is only suitable for some high-ductility metallic substance; And scantling distortion, metaplasia and unrelieved stress are all very large in drastic deformation process, for having the member of particular requirement and being not suitable for; Therefore the processing approach for this class A of geometric unitA exploration one " high-performance, high-level efficiency, low cost, low pollution " is necessary very much.
Inventor finds in early-stage Study: the metal-base composites of many alloy compositions of nano-particle reinforcement is carried out to pulsed magnetic field shock treatment, in organizing afterwards, processing observes a large amount of propagation and the dislocation motion vestige of dislocation, and found the viscous deformation feature that the majorities such as fault and mechanical twin just there will be under drastic deformation condition, sample is still retaining original shape and size simultaneously, there is substantial viscous deformation but on apparent size, still kept original feature in illustrative material inside, being defined as is microplasticity distortion, calculation result shows that now magnetic pressure only has several MPas, far do not reach yield-point, think that magnetic field force effect is not to cause the inducement of material plasticity distortion, from routine, be familiar with, material plasticity Deformation Reasons is internal stress and external stress, but magnetic pressure reaches yield value of stress under magnetic field condition, just there is not viscous deformation effect, show that Plastic Deformation Mechanism under conventional meaning need to dissect and perfect, it must be the viscous deformation that other effects because of magnetic field cause, attribution is for being " mangneto plastic effect ", the present invention is based on this effect, a kind of novel method that obtains superplastic aluminum based composites is provided.
Summary of the invention
The present invention, by apply the electromagnetic field of certain feature in material plasticity deformation process, utilizes " mangneto plastic effect ", realizes the object that improves material plasticity deformability.
The object of the invention is to be achieved through the following technical solutions:
The first step: the preparation of aluminum matrix composite.
Select the aluminium alloy of certain component as matrix, such as cast aluminium alloy ZL101 or wrought aluminium alloy 2024,6063 or 7055 aluminium alloys etc., using particle or fiber-reinforced metal matrix composite as preparing object, the introducing method of wild phase has two kinds: outer addition and in think of a way, inside think of a way is by raw wild phase in reaction in－situ method preparation; Be no matter outer addition or in think of a way, the wild phase of introducing should have lattice match relation with matrix, i.e. lattice misfit degree≤5%, qualified wild phase has Al
2o
3, Al
3zr, Al
3ti and mix phase Al
3(Ti
xzr
1-x) (0 < x < 1), TiB
2, ZrB
2deng; Require wild phase to there is micro-or nano size, be wild phase dimensional requirement≤1 μ m, while adopting outer addition to introduce wild phase, need to control the initial particle size≤1 μ m of wild phase, if think of a way in adopting, introduce wild phase and be divided into two kinds of situations: first, in some, raw wild phase has micro/nano-scale feature after generating in molten aluminium, such as Al
2o
3, TiB
2, ZrB
2deng; The second, for intermetallic compound, as Al
3zr, Al
3ti and mix phase Al
3(Ti
xzr
1-x) (0 < x < 1), to in building-up process, apply electromagnetic field or ultrasonic field, promote wild phase forming core, reduce wild phase size, by control physical field type, intensity and action time by wild phase size control in≤1 μ m level, can system of selection be: (1) rotary electromagnetic field, magnetic inductor strength range 0.4 ~ 0.5T, action time 3 ~ 4min; (2) ultrasonic field, ultrasound intensity scope 1.3 ~ 1.6KW, action time 3 ~ 4min; Moreover require wild phase to distribute in disperse in matrix, not occur that local reunion is as the criterion, if will quantitatively weigh, require particle and ambient particles minimum spacing>=0.5 μ m, average headway is advisable at 1 ~ 5 μ m, mainly by rapid solidification, realize, such as adopting copper mold casting or semi-continuous casting method.
Second step: according to matrix characteristics, matrix material is carried out to early stage and process.
If casting alloy will carry out solid solution aging processing according to the conventional heat treating regime of matrix, be commonly defined as T6 and process, such as for ZL101, after 720 ℃ of castings, first through the solution treatment of 535 ℃ * 6h, after water-cooled, again through the ageing treatment of 180 ℃ * 6h, belong to conventional heat treating regime; If wrought aluminium alloy, will be first through homogeneous anneal and extruding or rolling deformation processing according to routine, carry out again solid solution aging processing, as for 7055 aluminium alloys, after casting, first through the homogeneous anneal of 450 ℃ * 24h, push afterwards or rolling deformation processing, through the solution treatment of 475 ℃ * 2h, after water-cooled, carry out again the ageing treatment of 120 ℃ * 24h again.
The 3rd step: carry out " mangneto viscous deformation ", improve the plastic deformation ability of aluminum matrix composite, under specific magnetic fields condition, solid phase material is processed, magnetic field condition mainly comprises:
(1)magnetic field type: selectable magnetic field type has direct-current static high-intensity magnetic field and impulse magnetic field, no matter for direct-current static high-intensity magnetic field or pulsed magnetic field, suitable magnetic induction density scope is 1 ~ 50T, and within the scope of this, along with magnetic induction density increases, material plasticity deformability increases;
(2)the action of a magnetic field time: the action of a magnetic field time is because of the different metering methods of magnetic field type different choice,
For direct-current static high-intensity magnetic field, the treatment time is advisable at 30s ~ 200s, and with treatment time increase, material plasticity deformability increases; For impulse magnetic field, 20 ~ 200 of pulse numbers are advisable, and along with number of pulses increases, material plasticity deformability increases;
(3)material temperature: material temperature has impact to mangneto plastic effect, during lower than normal temperature temperature to changing
The better effects if of kind material plasticity deformability is thermodynamic temperature scale at 173K ~ 273K(K) in scope, temperature is lower, and material plasticity deformability is stronger;
(4)magnetic field stress field phase relation: mainly refer to field direction and stress field (being mainly to stretch) side
To the perpendicular or parallel relation between the two.Two kinds of modes all contribute to improve material plasticity deformability, and vertical mode is compared with parallel mode to improving the better effects if of plastic deformation ability, and unit elongation amplification value improves approximately 10%.
(5)with mating of stress field strain rate: mainly finger will obtain higher plastic deformation ability, needs
Will be compared with carrying out under low strain rate, general requirement strain rate is 10
-4~ 10
-2/ s.
Compared with prior art, the present invention has the following advantages and effect:
1) compare with fine crystalline superplastic processing in the past etc., " mangneto plastic working " omitted before superplasticity processing
Gross distortion is processed, and has shortened the preparation section of superplasticity aluminium, has saved energy expenditure; In addition, gross distortion is processed and to be only suitable for, in wrought aluminium alloy, being not suitable for cast aluminium alloy, and applicable material range of application is narrower and limited, and " mangneto plastic working " method to material component etc. without particular requirement.
2) " mangneto plastic working " prepare superplastic aluminum based composites, be based on " mangneto plastic effect ",
It is the plastic deformation ability that material has been improved in magnetic field.Give full play to the application potential of magnetic field in materials processing, meet fabrication of new materials due " high-level efficiency, high-performance, low cost, low pollution " feature.
Embodiment
Below in conjunction with embodiment, the invention will be further elaborated.Embodiment is only for the present invention is described, rather than limits by any way the present invention.
Embodiment mono-: Al
3zr, Al
2o
3viscous deformation feature under the preparation of particle enhancing distortion aluminum matrix composite and different condition
What this kind of aluminum matrix composite had is characterized as: micro-nano granules strengthens distortion aluminum matrix composite, and Particle Phase is Al
3zr, Al
2o
3, matrix is selected wrought aluminium alloy 7055 aluminium alloys, is denoted as (Al
3zr
(s)+ Al
2o
3 (s))
p/ 7055, composite material and preparation method thereof is:
Melting 7055 aluminium alloys (Mg:2.4%, Zr:0.2%, is mass percent, all the other are aluminium for Zn:8.4%, Cu:2.2%), using zirconium carbonate powder as raw material, by with aluminium liquid between react and generate Al
2o
3, Al
3zr particle, particle total volume fraction is designed to 4 vol.%, according to formula (1) metering equation, and is 75% according to experiment setting zirconium carbonate reaction recovery rate, generates 4vol.%(Al
2o
3+ Al
3zr) the zirconium carbonate amount that enhanced granule need to add is the 7.24wt.%(mass percent of Aluminum in Alloy amount).
13Al+3Zr(CO
3)
2=2Al
2O
3+3Al
3Zr+6CO
2 （1）
By direct reaction method, be about in high temperature aluminium alloys melt that the good zirconium carbonate powder of baking processing joins 850 ℃, reaction in－situ generates Al
2o
3and Al
3zr particle, particle size is at micro/nano level, maximum particle diameter≤2 μ m, median size is 0.9 μ m; By copper crystallizer semi-continuous casting pouring, become the ingot casting of diameter 100mm, by ingot casting through 450 ℃, after the homogenization treatment of 24 hours, carry out hot extrusion, extrusion ratio 16:1, extruded rod diameter 25mm, implements 475 ℃ of solid solutions 2 hours and the thermal treatment in 24 hours of 120 ℃ of timeliness to sample, then under different magnetic field condition, sample is carried out to " mangneto viscous deformation ".
Table 1 has provided under different experimental conditions and (has comprised magnetic field kind, magnetic induction density, Action of Static Magnetic Field time, pulsed field pulse number, magnetic field and stress field phase relation, system temperature etc.), applies (Al before and after magnetic field
3zr
(s)+ Al
2o
3 (s))
pthe unit elongation numerical value of/7055 matrix materials; And " starting point " data when not adding magnetic field contrast, provide unit elongation amplification value, and by amplification value size, weigh the impact effect of parameter used.
(Al under table 1 different experimental conditions
3
zr
(s)
+ Al
2
o
3 (s)
)
p
the unit elongation of/7055 aluminum matrix composites
* increase (↑) percentage and be with normal temperature under the result that contrasts without magnetic field.
This example explanation:
1)contrast 1,2,3,4 is found: when magnetic induction density is during in 1 ~ 50T scope (routine 15T, 25T, 30T and 45T), with magnetic induction density, increase, material unit elongation increases, and plastic deformation ability increases.
Contrast 3,5,6 discoveries: for 1 ~ 50T(example 30T) pulsed magnetic field, when pulse number scope is 20 ~ 100 (example 20,50,90), material unit elongation increases, and plastic deformation ability increases.
Contrast 7,8,9 discoveries: for 1 ~ 50T(example 25T) direct-current static magnetic field, when treatment time scope 30s ~ 200s (routine 35s, 120s, 190s), material unit elongation increases, and plastic deformation ability increases.
Contrast 3,10,11, the parallel stress field condition in 12(magnetic field), and contrast 13,14,15,16(magnetic field perpendicular stress field condition) find, when temperature from normal temperature (20 ℃, while 293K) being reduced to successively 273K, 223K and 173K, material unit elongation increases, and plastic deformation ability increases.
Contrast 3 and 13,10 and 14,11 and 15,12 can be found with 16: plastic deformation ability during the parallel stress field in magnetic field is during lower than perpendicular stress field, magnetic field, and equal conditions downward-extension rate amplification value improves approximately 10%.
Embodiment bis-: high-ductility TiB
2viscous deformation feature under the preparation of Aluminum-based Foundry Composites Reinforced with Particles and different condition
What this kind of aluminum matrix composite had is characterized as: micro-nano granules strengthens cast aluminum base composite material, selects TiB
2particle, as strengthening phase, selects cast aluminium alloy A356 as matrix alloy, is denoted as TiB
2p/ A356, composite material and preparation method thereof is:
Melting A356 aluminium alloy (Si:7%, Mg:0.3% are mass percent, and all the other are aluminium), with potassium fluotitanate K
2tiF
6with potassium fluoborate KBF
4as reacting salt, grain volume fraction is designed to 3vol.%, according to formula (2) reaction metering equation, according to experiment, sets potassium fluotitanate K
2tiF
6with potassium fluoborate KBF
4recovery rate be 90%, generate 3vol.% TiB
2enhanced granule need to add K
2tiF
6amount is 18.6% * Al amount, the KBF that need to add
4amount is the 19.5%(mass percent of aluminium amount in matrix alloy).
2 K
2TiF
6+2KBF
4+5Al=TiAl
3+TiB
2+6KF+2AlF
3+4F
2 （2）
When 750 ℃ of melt temperatures, by mixing salt reaction method, prepare TiB
2particle enhanced aluminum-based composite material, grain volume fraction is controlled at 3 ~ 4vol.%, and particle size range is that 200 ~ 500nm is at nearly nanoscale; By copper crystallizer semi-continuous casting pouring, become the ingot casting of diameter 100mm, ingot casting is implemented to the thermal treatment of 535 ℃ of solid solution 4h and 150 ℃ of timeliness 15h, then under different magnetic field condition, sample is carried out to " mangneto viscous deformation ".
Table 2 has provided under different experimental conditions and (has comprised magnetic field kind, magnetic induction density, Action of Static Magnetic Field time, pulsed field pulse number, magnetic field and stress field phase relation, system temperature etc.), applies TiB before and after magnetic field
2pthe unit elongation numerical value of/A356 matrix material; And " starting point " data when not adding magnetic field contrast, provide unit elongation amplification value, and by amplification value size, weigh the impact effect of parameter used.
tiB under table 2 different experimental conditions
2p
the unit elongation of/A356 aluminum matrix composite
* increase (↑) percentage and be with normal temperature under the result that contrasts without magnetic field.
This example explanation:
1)contrast 1,2,3,4 is found: when magnetic induction density is during in 1 ~ 50T scope (routine 15T, 25T, 30T and 45T), with magnetic induction density, increase, material unit elongation increases, and plastic deformation ability increases.
Contrast 3,5,6 discoveries: for 1 ~ 50T(example 30T) pulsed magnetic field, when pulse number scope is 20 ~ 100 (example 20,50,90), material unit elongation increases, and plastic deformation ability increases.
Contrast 7,8,9 discoveries: for 1 ~ 50T(example 25T) direct-current static magnetic field, (routine 35s, 120s, 190s when treatment time scope 30s ~ 200s
), material unit elongation increases, and plastic deformation ability increases.
Contrast 3,10,11, the parallel stress field condition in 12(magnetic field), and contrast 13,14,15,16(magnetic field perpendicular stress field condition) find, when temperature from normal temperature (20 ℃, while 293K) being reduced to successively 273K, 223K and 173K, material unit elongation increases, and plastic deformation ability increases.
Contrast 3 and 13,10 and 14,11 and 15,12 can be found with 16: plastic deformation ability during the parallel stress field in magnetic field is during lower than perpendicular stress field, magnetic field, and equal conditions downward-extension rate amplification value improves approximately 10%.
embodiment tri-: viscous deformation feature under the preparation of high-ductility SiC fiber reinforcement distortion aluminum matrix composite and different condition
What this kind of aluminum matrix composite had is characterized as: fiber reinforcement distortion aluminum matrix composite, and select SiC fiber as matrix material, select 2024 wrought aluminium alloies as matrix alloy, be denoted as SiC
f/ 2024, the preparation method of matrix material is:
By melting 2024 aluminium alloy (Cu:4.18%, Mg:1.44%, Mn:0.58%, Si:0.06%, is mass percent, all the other are Al) liquid forces to be pressed into the fixedly die cavity of built-in SiC fiber preform, pressure 20MPa used, pressure is applied to always and solidifies end, prepares SiC fiber reinforcement 2024 aluminum matrix composites, now fiber volume fraction is controlled as 5vol.%, SiC density 3.17 * * 10
3kg/m
3, the SiC fiber quality adding is the 6.4%(mass percent of Aluminum in Alloy amount); Sample is square, size 100mm * 100mm * 100mm; Sample, first through the homogenization treatment of 495 ℃ * 24h, is then processed through three passage rollings, be rolled into the thin plate that thickness is 10mm, will after the thermal treatment of thin plate 490 ℃ of solid solution 3h of enforcement and 190 ℃ of timeliness 10h, carry out " mangneto viscous deformation ".
Table 3 has provided under different experimental conditions and (has comprised magnetic field kind, magnetic induction density, Action of Static Magnetic Field time, pulsed field pulse number, magnetic field and stress field phase relation, system temperature etc.), applies SiC before and after magnetic field
fthe unit elongation numerical value of/2024 matrix materials; And " starting point " data when not adding magnetic field contrast, provide unit elongation amplification value, and by amplification value size, weigh the impact effect of parameter used.
siC under table 3 different experimental conditions
f
the unit elongation of/2024 aluminum matrix composites
* increase (↑) percentage and be with normal temperature under the result that contrasts without magnetic field.
This example explanation:
1)contrast 1,2,3,4 is found: when magnetic induction density is during in 1 ~ 50T scope (routine 15T, 25T, 30T and 45T), with magnetic induction density, increase, material unit elongation increases, and plastic deformation ability increases.
Contrast 3,5,6 discoveries: for 1 ~ 50T(example 30T) pulsed magnetic field, when pulse number scope is 20 ~ 100 (example 20,50,90), material unit elongation increases, and plastic deformation ability increases.
Contrast 7,8,9 discoveries: for 1 ~ 50T(example 25T) direct-current static magnetic field, (routine 35s, 120s, 190s when treatment time scope 30s ~ 200s
), material unit elongation increases, and plastic deformation ability increases.
Contrast 3,10,11, the parallel stress field condition in 12(magnetic field), and contrast 13,14,15,16(magnetic field perpendicular stress field condition) find, when temperature from normal temperature (20 ℃, while 293K) being reduced to successively 273K, 223K and 173K, material unit elongation increases, and plastic deformation ability increases.
Contrast 3 and 13,10 and 14,11 and 15,12 can be found with 16: plastic deformation ability during the parallel stress field in magnetic field is during lower than perpendicular stress field, magnetic field, and equal conditions downward-extension rate amplification value improves approximately 10%.
Claims (9)
1. a method that improves aluminum matrix composite plastic deformation ability, it is characterized in that: aluminum matrix composite is applied to magnetic field, by controlling magnetic field type, magnetic induction density, the action of a magnetic field time, magnetic field and the phase relation of stress field, the strain rate of the temperature of aluminum matrix composite and aluminum matrix composite realizes the significantly raising of aluminum matrix composite unit elongation.
2. a kind of method that improves aluminum matrix composite plastic deformation ability as claimed in claim 1, is characterized in that: described magnetic field type is direct-current static high-intensity magnetic field or pulsed magnetic field, and suitable magnetic induction density scope is 1 ~ 50T; Along with magnetic induction density increases, the plastic deformation ability of aluminum matrix composite increases.
3. a kind of method that improves aluminum matrix composite plastic deformation ability as claimed in claim 2, is characterized in that: described direct-current static high-intensity magnetic field, and the treatment time is at 30s ~ 200s, increases with the treatment time, and material plasticity deformability increases; Described impulse magnetic field, 20 ~ 200 of pulse numbers, along with number of pulses increases, material plasticity deformability increases.
4. a kind of method that improves aluminum matrix composite plastic deformation ability as claimed in claim 1, it is characterized in that: when aluminum matrix composite is applied to magnetic field, the temperature that should control aluminum matrix composite is 173K ~ normal temperature, in this temperature range, along with temperature reduces, material plasticity deformability increases.
5. a kind of magnetism method that improves aluminum matrix composite plastic deformation ability as claimed in claim 1, is characterized in that: the phase relation of the stress field of described magnetic field and draw direction is perpendicular or parallel.
6. a kind of magnetism method that improves aluminum matrix composite plastic deformation ability as claimed in claim 5, is characterized in that: described magnetic field is vertical with the phase relation of the stress field of draw direction.
7. a kind of method that improves aluminum matrix composite plastic deformation ability as claimed in claim 1, is characterized in that: the strain rate of described aluminum matrix composite is 10
-4~ 10
-2/ s.
8. a kind of method that improves aluminum matrix composite plastic deformation ability as claimed in claim 1, is characterized in that: the wild phase that described aluminum matrix composite is introduced will have lattice match relation with matrix, i.e. lattice misfit degree≤5%; Require wild phase to there is micro-or nano size, i.e. wild phase dimensional requirement≤1 μ m; Require wild phase to distribute in disperse in matrix, not occur that local reunion is as the criterion, if will quantitatively weigh, require particle and ambient particles minimum spacing >=0.5 μ m, average headway is advisable at 1 ~ 5 μ m.
9. a kind of method that improves aluminum matrix composite plastic deformation ability as claimed in claim 1, is characterized in that: described aluminum matrix composite should carry out early stage to be processed; If matrix is casting alloy, carry out solid solution aging processing according to the conventional heat treating regime of matrix; If matrix is wrought aluminium alloy, according to routine, to first passes through homogeneous anneal and extruding or rolling deformation processing, then carry out solid solution aging processing.
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| CN105032926A (en) * | 2015-08-17 | 2015-11-11 | 江苏大学 | Method for rolling metal wire bars under magnetostatic field auxiliary effect |
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| CN105331911A (en) * | 2015-11-30 | 2016-02-17 | 江苏大学 | Copious cooling and magnetic field treating method for improving plastic processing performance of magnesium alloy |
| CN105568184A (en) * | 2016-02-02 | 2016-05-11 | 西安建筑科技大学 | Low-melting-point metal magnetic induced plastic annular rolling friction ultra-refining method and device thereof |
| CN110004333A (en) * | 2019-01-28 | 2019-07-12 | 中信戴卡股份有限公司 | A method of improving aluminum matrix composite enhances particle dispersing uniformity |
| CN110373534A (en) * | 2019-07-25 | 2019-10-25 | 赵京晨 | A method of slowing down solid components crackle generation and expansion |
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| CN105107843A (en) * | 2015-06-17 | 2015-12-02 | 江苏大学 | Method for rolling high-strength hard aluminum alloy |
| CN105032926A (en) * | 2015-08-17 | 2015-11-11 | 江苏大学 | Method for rolling metal wire bars under magnetostatic field auxiliary effect |
| WO2017028552A1 (en) * | 2015-08-17 | 2017-02-23 | 江苏大学 | Method for rolling metal wire or rod with assistance of combined static magnetic field |
| CN105032926B (en) * | 2015-08-17 | 2017-03-01 | 江苏大学 | A kind of method of rolled metal wire and rod under magnetostatic field assosting effect |
| US10906076B2 (en) * | 2015-08-17 | 2021-02-02 | Jiangsu University | Method for rolling metal wire or rod with assistance of combined static magnetic field |
| CN105331911A (en) * | 2015-11-30 | 2016-02-17 | 江苏大学 | Copious cooling and magnetic field treating method for improving plastic processing performance of magnesium alloy |
| CN105568184A (en) * | 2016-02-02 | 2016-05-11 | 西安建筑科技大学 | Low-melting-point metal magnetic induced plastic annular rolling friction ultra-refining method and device thereof |
| CN110004333A (en) * | 2019-01-28 | 2019-07-12 | 中信戴卡股份有限公司 | A method of improving aluminum matrix composite enhances particle dispersing uniformity |
| CN110373534A (en) * | 2019-07-25 | 2019-10-25 | 赵京晨 | A method of slowing down solid components crackle generation and expansion |
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