CN108330366A - A kind of self-reinforcing toughening magnesium alloy and preparation method thereof - Google Patents
A kind of self-reinforcing toughening magnesium alloy and preparation method thereof Download PDFInfo
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- CN108330366A CN108330366A CN201810217544.1A CN201810217544A CN108330366A CN 108330366 A CN108330366 A CN 108330366A CN 201810217544 A CN201810217544 A CN 201810217544A CN 108330366 A CN108330366 A CN 108330366A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
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- 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 invention discloses a kind of self-reinforcing toughening magnesium alloy and preparation method thereof, the chemical composition of alloy is Mg aAl bZn cY dNd wt%, which includes the tissues such as spontaneous crystallization hardening constituent, nanometer Dynamic Precipitation phase and α Mg solid solution.When preparation, first by ingot casting preheating to 225~325 DEG C, and 20~30min is kept the temperature；Extruder is recycled to carry out extrusion process to the ingot casting after preheating；Aging strengthening model finally is carried out to the proximate matter after extruding, obtains final deforming alloy.The preparation process can refine by spontaneous crystallization hardening constituent in alloy under extrusion shearing effect and Dispersed precipitate is in intrinsic silicon, realize self-reinforcing toughening；Compared with the alloy prepared using conventional extruded, hence it is evident that simplify product processes flow, tensile strength promotes about 38%, and yield strength promotes about 24%, realizes the magnesium alloy that low cost prepares high comprehensive performance.
Description
Technical field
The invention belongs to magnesium alloy technical fields, and in particular to a kind of self-reinforcing toughening magnesium alloy and preparation method thereof.
Background technology
Magnesium alloy is widely used to many light-weight design manufacturing fields at present as most light metal material, small to arrive
Communication product shell, automobile/cycle hub, inner guard board of automobile door arrive greatly bullet train parts, unmanned plane, satellite structure etc..
With the continuous expansion that magnesium alloy materials are applied, different product requires also increasingly to improve to magnesium alloy comprehensive mechanical property.It realizes
Low cost prepares the application that the excellent magnesium alloy materials of comprehensive mechanical property will be helpful to further widen magnesium alloy materials.
Magnesium alloy ingot generally is obtained by nonequilibrium freezing, and commercialization magnesium alloy is general before extrusion at present all can be to ingot casting
Carry out Homogenization Treatments.Such as when carrying out conventional extrusion to Mg-8Al-0.5Zn (AZ80) magnesium alloy, AZ80 magnesium alloys are cast
Ingot first carries out 400~420 DEG C/8~Homogenization Treatments for 24 hours, to eliminate the casting flaws such as segregation, shrinkage cavity；Meanwhile also causing to coagulate
Gu the divorsed eutectic tissue (Fig. 1 (a)) that process generates disappears totally, wherein most β-Mg17Al12Crystalline phase back dissolving is to α-Mg
Matrix finally obtains " α-Mg solid solution+a small amount of β-Mg17Al2Precipitation precipitated phase " tissue (Fig. 1 (b)).Then carry out conventional extrusion
And aging strengthening model, you can obtain the magnesium alloy profiles of moderate strength.But it is closed by the AZ80 deformed Mgs that this machining path obtains
Golden tensile strength is usually no more than 380MPa, and elongation percentage is generally 12~16%, and after aging strengthening model reinforcing, elongation percentage is
It reduces.
Invention content
For the above-mentioned prior art, a kind of self-reinforcing toughening magnesium alloy of present invention offer and preparation method thereof, to solve magnesium
The problem of intensity is relatively low after alloy conventional extrusion, and elongation percentage is decreased obviously after ageing strengthening.
In order to achieve the above object, the technical solution adopted in the present invention is：There is provided a kind of self-reinforcing toughening magnesium alloy and
Preparation method.Alloy group becomes：Mg-aAl-bZn-cY-dNd wt%, wherein：6≤a≤8,0.5≤b≤1,0≤c
≤ 0.2,0≤d≤0.2；The alloy includes the tissue of following volumes score：
8~15vol% of spontaneous crystallization hardening constituent；
1~2vol% of nanometer Dynamic Precipitation phase；
Surplus is α-Mg solid solution；
Wherein, spontaneous crystallization hardening constituent is eutectic reinforcement β-Mg17Al2And/or Laves phase reinforcements, Laves phases enhance
Body is Al2Y or Al2Nd；Nanometer Dynamic Precipitation is mutually β-Mg17Al2.Alloy grain size is 5~10 μm, spontaneous crystallization hardening constituent
Equivalent diameter be 1~3 μm, a diameter of 200~800nm of Dynamic Precipitation phase.
The preparation method of self-reinforcing toughening magnesium alloy includes the following steps in the present invention：
(1) by ingot casting rapidly pre-warming to 225~325 DEG C, 20~30min is kept the temperature；
(2) extrusion process is carried out to the ingot casting after preheating using extruder；Extrusion ratio is 30~35, is squeezed in extrusion process
Bar fltting speed is 0.5~1mm/s, while being corresponded to material yield strength 50%~70% at a temperature of extrudate application outlet
Load as tractive force；
(3) aging strengthening model is carried out to the proximate matter after extruding, obtains final extruded alloy.
Wherein, in step (1) ingot casting be trace rare-earth be modified AZ61, AZ80 or AZ91, Rare-Earth Content be 0~
0.2wt%.
Step (1) preheats ingot casting using electromagnetic induction heating system, and warm-up power is 30~60kW.
The temperature of extrusion cylinder is 200~300 DEG C in extruder in step (2).
The beneficial effects of the invention are as follows：
1. making full use of spontaneous crystallization hardening constituent in ingot casting nonequilibrium freezing tissue, by designing extrusion process, heredity is protected
A large amount of spontaneous crystallization hardening constituents are stayed, dynamic recrystallization forming core is effectively increased and recrystal grain is inhibited to grow up, it is apparent to squeeze tissue
Uniformly refinement.There are 200~800nm nanometers of Dynamic Precipitation phases for crystal boundary simultaneously, realize sequential polymorphic type (process of setting crystalline phase
With extrusion process Dynamic Precipitation phase), multiple dimensioned (micron crystalline phase and nanometer precipitated phase) compound autogenic reinforcement, at subsequent thermal
The tensile strength of magnesium alloy can be promoted 30~50% by science and engineering skill, and yield strength promotes 20~30%, has been obviously improved existing squeeze
The comprehensive mechanical property of die mould material realizes In-sltu reinforcement toughening.
2. can the quick heat penetration of ingot casting be avoided spontaneous crystallization hardening constituent to ingot casting preheating using electromagnetic induction heating system
Back dissolving matrix, to ensure to reach the spontaneous reinforced phase of design volume content.In addition, using electromagnetic induction heating system, simplify
Magnesium alloy extrusion processes pretreatment procedure, shortens the process-cycle, and can work continuously, and is conducive to low-cost and high-performance magnesium
The preparation of alloy.
3. compatible strong with existing extrusion process, compact dimensions and production efficiency are apparently higher than previous special type and squeeze (back and forth
Squeeze, squeeze before preageing, low temperature squeezes at a slow speed, etc. channel pressings etc.), be conducive to upgrade, while easily prepared more specification products.
4. the self-reinforcing method for toughening that present invention design uses is applicable not only to the magnesium alloy for having crystallization hardening constituent, simultaneously
Being also applied for other, there is similar spontaneous crystallization to strengthen the extruded alloys such as aluminium alloy, titanium alloy, the steel of phase character.
Description of the drawings
Fig. 1 is conventional extrusion and spontaneous Strengthening and Toughening extruding tissue contrast's figure under the identical extruding condition of ZA80 magnesium alloys；
Wherein, (a) is as-cast microstructure optics picture before AZ80 is squeezed；
(b) it is AZ80 conventional extrusion state tissue scanning electron microscopic pictures；
(c) it is AZ80 in-situ authigenic Strengthening and Toughening As-extruded tissue scanning electron microscopic pictures；
(d) it is respectively the shell structurre feature and Dynamic Precipitation β of heredity β crystalline phases in As-extruded tissue of the present invention with (e)
The high power scanning electron microscope shape appearance figure of phase.
Specific implementation mode
The specific implementation mode of the present invention is described in detail below in conjunction with the accompanying drawings.In preparation process, ingot casting used
AZ61, AZ80 or the AZ91 etc. being modified for trace rare-earth can heat treating magnesium alloys, content of rare earth is 0~0.2wt%.For convenience
It describes the problem, the embodiment of the present invention is all by taking AZ80 series alloys as an example.
Embodiment one
By taking heat-treatable strengthened magnesium alloy AZ80 as an example, illustrate the method for the present invention feature and implementation process.
(1) the AZ80 ingot castings of a diameter of 90mm are sequentially placed into electromagnetic induction heating furnace, electromagnetic induction heating power is
30~60kW, frequency are 1000Hz or so.Temperature is monitored by the contact K-type thermocouple moment simultaneously, adjustment electromagnetic induction adds
Hot stove parameter ensures that ingot casting temperature reaches 250 DEG C or so, and heating duration 30 minutes ensures divorced under the premise of AZ80 ingot casting heat penetrations
β crystalline phases in eutectic structure are largely retained, and are effectively shortened and are squeezed the pre-treatment time.In advance by the extruding of a diameter of 16mm
Mold, which is put into resistance-heated furnace, heats spare, 400 DEG C of heating temperature, heating duration 4~6 hours；Extruder is concurrently set to squeeze
Pressure cylinder temperature is 300~320 DEG C, and heating is spare.
(2) after mold and extrusion cylinder temperature to be extruded reaches preset condition, pass through air-leg in electromagnetic induction heating furnace
The AZ80 ingot castings for being up to preset temperature are fed to extrusion cylinder, and control extrusion ratio is about 32.In extrusion process, pressure ram promotes
Speed is maintained at 0.5mm/s or so, while being drawn to 16mm extruded bars by dragger in extrded material exit, leads
Gravitation size is that material yield strength corresponds to the 50% of load under outlet temperature.
(3) room temperature is air-cooled to the 16mm extruded bars after extruding, blast heating furnace temperature is set as 170 DEG C, to temperature
Afterwards, interception fixed length (about 1.0m) AZ80 extruded bars samples are put into hot blast heater, are kept the temperature 20 hours, are then taken out air-cooled.
Embodiment two
By taking heat-treatable strengthened magnesium alloy AZ80+0.2Y (Rare Earth Y content is 0.2wt%) as an example, illustrate the method for the present invention
Feature and implementation process.
(1) the AZ80+0.2Y ingot castings of a diameter of 90mm are sequentially placed into electromagnetic induction heating furnace, electromagnetic induction heating work(
Rate is 30~60kW, and frequency is 1000Hz or so.Temperature is monitored by the contact K-type thermocouple moment simultaneously, adjustment induction adds
Hot stove parameter so that ingot casting temperature is in 300 DEG C, and heating duration 20 minutes, divorced is total under the premise of AZ80+0.2Y ingot casting heat penetrations
β crystalline phases in crystalline substance tissue are largely retained, and are effectively shortened and are squeezed the pre-treatment time.In advance by the extruding of diameter 16mm bars
Mold, which is put into resistance-heated furnace, heats spare, 400 DEG C of heating temperature, heating duration 4~6 hours；Extruder is concurrently set to squeeze
Pressure cylinder temperature is 300~320 DEG C, and heating is spare.
(2) after mold and extrusion cylinder temperature to be extruded reaches preset condition, pass through air-leg in electromagnetic induction heating furnace
The AZ80+0.2Y ingot castings for being up to preset temperature are fed to extrusion cylinder, and control extrusion ratio is about 32.In extrusion process, squeeze
Machine pressure ram fltting speed is maintained at 1mm/s or so, at the same in extrded material exit by dragger to 16mm extruded bars
It is drawn, tractive force size is that material yield strength corresponds to the 50% of load under outlet temperature.
(3) room temperature is air-cooled to the 16mm extruded bars after extruding, blast heating furnace temperature is set as 220 DEG C, to temperature
Afterwards, interception fixed length (about 1.0m) AZ80+0.2Y extruded bars samples are put into hot blast heater, are kept the temperature 15 hours, are then taken out
It is air-cooled.
Embodiment three
With heat-treatable strengthened magnesium alloy AZ80+0.1Y+0.1Nd, (for 0.1wt%, rare earth Nd content is Rare Earth Y content
For 0.1wt%), illustrate the method for the present invention feature and implementation process.
(1) the AZ80+0.1Y+0.1Nd ingot castings of a diameter of 90mm are sequentially placed into electromagnetic induction heating furnace, electromagnetic induction
Heating power is 30~60kW, and frequency is 1000Hz or so.Temperature, adjustment are monitored by the contact K-type thermocouple moment simultaneously
Sensing heating furnace parameters, ensure ingot casting temperature is 300 DEG C, heating duration 30 minutes, to ensure AZ80+0.1Y+0.1Nd ingot castings
β crystalline phases under the premise of heat penetration in divorsed eutectic tissue are largely retained, and are effectively shortened and are squeezed the pre-treatment time.It in advance will be straight
The extrusion die of diameter 16mm bars, which is put into resistance-heated furnace, heats spare, 400 DEG C of heating temperature, heating duration 4~6 hours；
It is 300~320 DEG C to concurrently set extruder extrusion cylinder temperature, and heating is spare.
(2) after mold and extrusion cylinder temperature to be extruded reaches preset condition, pass through the air-leg of electromagnetic induction heating furnace
The automatic AZ80+0.1Y+0.1Nd ingot castings for being up to preset temperature are fed to extrusion cylinder, and control extrusion ratio is about 32.It was squeezing
Cheng Zhong, extruder pressure ram fltting speed is maintained at 1mm/s, while being squeezed 16mm by dragger in extrded material exit
Bar is drawn, tractive force size be under outlet temperature material yield strength to the 70% of load.
(3) room temperature is air-cooled to the 16mm extruded bars after extruding, blast heating furnace temperature is set as 220 DEG C, to temperature
Afterwards, interception fixed length (about 1.0m) AZ80+0.1Y+0.1Nd extruded bars samples are put into hot blast heater, keep the temperature 30 hours.So
After take out it is air-cooled.
Comparative example
(1) the AZ80 ingot castings of a diameter of 90mm are sequentially placed into resistance-heated furnace and homogenize processing, adjust heating furnace
Parameter so that ingot casting temperature is in 420 DEG C, heating duration 10~20 hours, to eliminate the casting flaws such as segregation, shrinkage cavity；Meanwhile
Also the divorsed eutectic tissue (Fig. 1 (a)) that casting solidification process generates is caused to disappear totally, wherein most β-Mg17Al12Crystallization
Phase back dissolving finally obtains " α-Mg solid solution+a small amount of β-Mg to α-Mg matrixes17Al2Precipitation precipitated phase ".In advance by 16mm diameter sticks
The extrusion die of material, which is put into resistance-heated furnace, heats spare, 400 DEG C of heating temperature, heating duration 4~6 hours；It concurrently sets
Extruder extrusion cylinder temperature is 300~320 DEG C, and heating is spare.
(2) to homogenizing that treated, AZ80 ingot castings carry out conventional extrusion processing；Extruder pressure ram fltting speed is maintained at
1mm/s, while 16mm extruded bars are drawn by dragger in extrded material exit, tractive force size is outlet temperature
The 50% of the lower material yield strength of degree.After extruding shown in alloy structure such as Fig. 1 (b).
(3) room temperature is air-cooled to the 16mm extruded bars after extruding, blast heating furnace temperature is set as 170 DEG C, to temperature
Afterwards, interception fixed length (about 1.0m) AZ80 extruded bars samples are put into hot blast heater, keep the temperature 20 hours.Then take out it is air-cooled,
Conventional extrusion AZ80 products.
Interpretation of result
What table 1 provided is the component and its content of product in each group embodiment.
1 product component of table and content (wt%)
| Mg | Al | Zn | Y | Nd | Other | |
| Embodiment one | 91.5 | 7.8 | 0.6 | / | / | 0.1 |
| Embodiment two | 91.4 | 7.8 | 0.5 | 0.2 | / | 0.1 |
| Embodiment three | 91.3 | 7.8 | 0.6 | 0.1 | 0.1 | 0.1 |
| Comparative example | 91.4 | 8.0 | 0.5 | / | / | 0.1 |
It is described for the ease of the composition to alloy, self-reinforcing toughening magnesium alloy is indicated with following form in the present invention：
Mg-aAl-bZn-cY-dNd wt%
According to the data in table 1 it is found that 6≤a≤8,0.5≤b≤1,0≤c≤0.2,0≤d≤0.2.
The group of alloy becomes in embodiment one：Mg-7.8Al-0.6Zn；
The group of alloy becomes in embodiment two：Mg-7.8Al-0.5Zn-0.2Y；
The group of alloy becomes in embodiment three：Mg-7.8Al-0.6Zn-0.1Y-0.1Nd.
What table 2 provided is the metallographic structure of product and its volume fraction in each group embodiment.
2 product metallographic structure of table and its volume fraction (vol%)
What table 3 provided is the tensile strength (MPa), yield strength (MPa) and elongation percentage of product in each group embodiment
(%).
The mechanical property parameters of 3 product of table
| Tensile strength (MPa) | Yield strength (MPa) | Elongation percentage (%) | |
| Embodiment one | 421 | 302 | 16 |
| Embodiment two | 433 | 309 | 14 |
| Embodiment three | 448 | 319 | 13 |
| Comparative example | 340 | 220 | 14 |
From table 3 it is observed that the magnesium alloy prepared by method using the present invention and use conventional extrusion mode institute
The magnesium alloy prepared is compared, and tensile strength promotes 30% or more, and yield strength promotes 20% or more, and elongation percentage is kept substantially
It is constant, this is because ingot casting passes through 20~30min electromagnetic induction heatings, ingot casting rapidly pre-warming to extruding temperature 225 before extrusion
~325 DEG C, this temperature is not only conducive to realize that conventional extrusion, what is more important are far below β-Mg in divorsed eutectic tissue17Al2Knot
The melting temperature (about 437 DEG C) of crystalline phase, therefore in extrusion process, a large amount of β-Mg17Al2Crystalline phase will be retained, and squeezed
It is squeezed shear action in the process, simultaneously Dispersed precipitate finally obtains As-extruded and be organized as in deformed magnesium alloy material for fragmentation
" α-Mg solid solution+a large amount of β-Mg17Al2Crystalline phase (or Laves phases)+a small amount of nanometer β-Mg17Al2Precipitation precipitated phase " (Fig. 1 (c)),
Reach the effectiveness that similar composite material diffusing particle is strengthened, realizes spontaneous activeness and quietness, but there is no alloy systems herein
The outer compound addition for strengthening composition granule, this is the difference place with composite material.Extrusion process through the invention simultaneously, original casting
The casting flaws such as segregation and shrinkage cavity in ingot are eliminated in extrusion shearing flow process, even tissue (Fig. 1 after extruding
(c)).Furthermore the present invention design alloy material also include AZ80 magnesium alloys add 0.1~0.2wt% rare earth element (yttrium (Y),
Niobium (Nd) etc.) formed trace rare-earth be modified magnesium alloy, the high-melting-point Laves phases formed during Hirschfeld-Klinger reaction (ratio
Such as Al2Y、Al2Nd), the magnesium alloy activeness and quietness being modified for follow-up trace rare-earth provides more in-situ crystallization hardening constituents.Finally
By electromagnetic induction the pre-heat treatment flow before the extruding similar with above-mentioned AZ80 and follow-up aging strengthening model, it is equally available from increasing
The magnesium alloy profiles of strong toughening effect.
Comparison diagram 1 (b) and Fig. 1 (c) it can be found that extrusion cylinder temperature, extrusion ratio, extrusion die temperature, extrusion speed,
Under the premise of squeezing the identical setting of billet temperature, the AZ80 magnesium alloy extrusion proximate matter crystallite dimensions after Homogenization Treatments are 20~30 μ
M, and there was only the second phase of a small amount of Dynamic Precipitation in crystal boundary.340~360MPa of tensile strength, 220~250MPa of yield strength extend
Rate 12~16%；And for the AZ80 magnesium alloy extrusion proximate matters of in-situ authigenic And Strengthening And Toughening Design of the present invention, crystallite dimension is apparent
Refinement, 5~10 μm of crystallite dimension, spontaneous crystallization hardening constituent volume content 10~15%, while it being distributed in crystal boundary and transgranular, effectively
Recrystal grain in extrusion process is inhibited to grow up.In crystal boundary, there are 200~800nm Dynamic Precipitations phases (Fig. 1 (e)) simultaneously, real
Sequential polymorphic type (process of setting crystalline phase and extrusion process Dynamic Precipitation phase), multiple dimensioned (micron crystalline phase and nanometer analysis are showed
Go out phase) compound spontaneous enhancing.420~450MPa of tensile strength, 300~320MPa of yield strength, elongation percentage 12~16%.It is comprehensive
Mechanical property is improved obviously, and realizes self-reinforcing toughening.Similarly for AZ80+0.2Y, AZ80+0.1Y+0.1Nd etc. is micro
Rare earth modified magnesium alloy, due to existing simultaneously eutectic reinforcement β-Mg17Al2Or Laves phase reinforcements Al2Y, Al2Nd, knot
Brilliant hardening constituent type more horn of plenty, analogy AZ80 magnesium alloys, equally achievable self-reinforcing toughening effect.
Based on above-mentioned principle, the self-reinforcing method for toughening that present invention design uses is applicable not only to have spontaneous crystallization reinforcing
The magnesium alloy of phase, while being also applied for other, there is similar spontaneous crystallization to strengthen the extruding such as aluminium alloy, titanium alloy, the steel of phase character
Proximate matter.
Although being described in detail to the specific implementation mode of the present invention, the protection to this patent should not be construed as
The restriction of range.In range described by claims, those skilled in the art can make without creative work
Various modifications and deformation still belong to the protection domain of this patent.
Claims (7)
1. a kind of self-reinforcing toughening magnesium alloy, characterized in that chemical composition is Mg-aAl-bZn-cY-dNd wt%, wherein：6≤
A≤8,0.5≤b≤1,0≤c≤0.2,0≤d≤0.2；The alloy includes the tissue of following volumes score：
8~15vol% of spontaneous crystallization hardening constituent；
1~2vol% of nanometer Dynamic Precipitation phase；
Surplus is α-Mg solid solution；
Wherein, spontaneous crystallization hardening constituent is eutectic reinforcement β-Mg17Al2And/or Laves phase reinforcements, the Laves phases enhance
Body is Al2Y and/or Al2Nd；Nanometer Dynamic Precipitation is mutually β-Mg17Al2。
2. self-reinforcing toughening magnesium alloy according to claim 1, it is characterized in that：Alloy grain size is 5~10 μm, spontaneous
The equivalent diameter for crystallizing hardening constituent is 1~3 μm, a diameter of 200~800nm of nanometer Dynamic Precipitation phase.
3. the method for preparing self-reinforcing toughening magnesium alloy as described in claim 1, characterized in that include the following steps：
(1) by ingot casting rapidly pre-warming to 225~325 DEG C, 20~30min is kept the temperature；
(2) extrusion process is carried out to the ingot casting after preheating using extruder；Extrusion ratio is 30~35, and pressure ram pushes away in extrusion process
It is 0.5~1mm/s into speed, while to 50%~70% corresponding load of material yield strength at a temperature of extrudate application outlet
Lotus is as tractive force；
(3) aging strengthening model is carried out to the proximate matter after extruding, obtains final extruded alloy.
4. preparation method according to claim 3, it is characterized in that：In step (1) ingot casting be trace rare-earth be modified AZ61,
AZ80 or AZ91, Rare-Earth Content are 0~0.2wt%.
5. preparation method according to claim 3, it is characterized in that：Step (1) is using electromagnetic induction heating system to ingot casting
It is preheated, warm-up power is 30~60kW.
6. preparation method according to claim 3, it is characterized in that：In step (2) temperature of extruder extrusion cylinder be 200~
300℃。
7. preparation method according to claim 3, characterized in that aging heat treatment method is in step (3)：It will squeeze
Proximate matter afterwards is air-cooled to room temperature, then under the conditions of 170~220 DEG C keep the temperature 10~30h, further take out it is air-cooled, obtain finally squeeze close
Gold.
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109731981A (en) * | 2019-01-04 | 2019-05-10 | 西南交通大学 | The plastic deformation equipment of material |
| CN110029258A (en) * | 2019-04-26 | 2019-07-19 | 陕西鼎卓材料科技有限公司 | A kind of high tough wrought magnesium alloy and preparation method thereof |
| CN110184551A (en) * | 2019-06-26 | 2019-08-30 | 西北工业大学 | Improve the heat treatment method of situ Al N/AZ91 magnesium-based composite material corrosion resisting property |
| CN112143952A (en) * | 2020-09-28 | 2020-12-29 | 贵州航天风华精密设备有限公司 | High-strength heat-resistant magnesium alloy and smelting and heat treatment method thereof |
| CN112442621A (en) * | 2020-11-04 | 2021-03-05 | 长沙新材料产业研究院有限公司 | Magnesium alloy plate and preparation method thereof |
| CN112458348A (en) * | 2020-11-04 | 2021-03-09 | 长沙新材料产业研究院有限公司 | Magnesium alloy semicircular ring section bar and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109731981A (en) * | 2019-01-04 | 2019-05-10 | 西南交通大学 | The plastic deformation equipment of material |
| CN110029258A (en) * | 2019-04-26 | 2019-07-19 | 陕西鼎卓材料科技有限公司 | A kind of high tough wrought magnesium alloy and preparation method thereof |
| CN110184551A (en) * | 2019-06-26 | 2019-08-30 | 西北工业大学 | Improve the heat treatment method of situ Al N/AZ91 magnesium-based composite material corrosion resisting property |
| CN112143952A (en) * | 2020-09-28 | 2020-12-29 | 贵州航天风华精密设备有限公司 | High-strength heat-resistant magnesium alloy and smelting and heat treatment method thereof |
| CN112143952B (en) * | 2020-09-28 | 2022-02-22 | 贵州航天风华精密设备有限公司 | High-strength heat-resistant magnesium alloy and smelting and heat treatment method thereof |
| CN112442621A (en) * | 2020-11-04 | 2021-03-05 | 长沙新材料产业研究院有限公司 | Magnesium alloy plate and preparation method thereof |
| CN112458348A (en) * | 2020-11-04 | 2021-03-09 | 长沙新材料产业研究院有限公司 | Magnesium alloy semicircular ring section bar and preparation method thereof |
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