CN105331866A - Mg-Zn-Gd quasi-crystal strengthened AZ91 magnesium alloy and preparing method thereof - Google Patents
Mg-Zn-Gd quasi-crystal strengthened AZ91 magnesium alloy and preparing method thereof Download PDFInfo
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Abstract
The invention relates to Mg-Zn-Gd quasi-crystal strengthened AZ91 magnesium alloy. The Mg-Zn-Gd quasi-crystal strengthened AZ91 magnesium alloy is characterized by comprising, by mass, 8.18-8.82% of Al, 1.90-5.16% of Zn, 0.29-1.36% of Gd and the balance Mg. The Mg-Zn-Gd quasi-crystal alloy clear in tissue and even in component is obtained; quasi-crystal intermediate alloy is added to traditional AZ91 alloy; the AZ91 alloy and the quasi-crystal intermediate alloy with the mass percent of 2%-10% are smelted at the same time through reasonable technology means; and then the Mg-Zn-Gd quasi-crystal strengthened AZ91 magnesium alloy is obtained. The specific strength and the specific rigidity of the magnesium alloy are ensured, meanwhile, strength, plasticity and corrosion resistance of the alloy are remarkably improved, and good comprehensive performance is obtained. The AZ91 alloy prepared through the method can be more widely applied to the fields of rail transit, automobiles, electronics, communication and the like.
Description
Technical field
The invention belongs to magnesium alloy preparation field, be specifically related to the accurate brilliant AZ91 Alloy And Preparation Method strengthened of a kind of Mg-Zn-Gd.
Background technology
In the actual production of current magnesium alloy, AZ91 alloy is current most popular a kind of cast magnesium alloys, Mg-Zn-RE quasicrystalline alloy is joined in the business magnesium alloy such as AZ91 as master alloy, can under the condition of essentially consist phase not changing alloy, the features such as the low interfacial energy utilizing quasicrystal particle exclusive, remelting, corrosion resistant performance, high intensity level high rigidity, add in AZ91 as-cast magnesium alloy as master alloy, put forward heavy alloyed mechanical property and rotproofness performance.
At present, the accurate brilliant enhancing AZ91 magnesium alloy of widely used Al-Cu-Fe.Although can put forward heavy alloyed intensity, inevitably metallic impurity served by band.Application number is the preparation method that the Chinese patent of 200610026842.X reports a kind of spontaneous accurate brilliant high-ductility wrought magnesium alloy strengthened, and obtains the magnesium alloy plate that tensile strength is very high.
Research shows, icosahedral quasicrystal (I phase) has high rigidity, good thermodynamic stability, low-friction coefficient, low interfacial energy and feature and the good associativity with magnesium matrix such as anti-corrosion.
Summary of the invention
What the present invention is directed to current As-Cast AZ 91 Magnesium Alloy organizes crystal grain thicker, mechanical property is not high, the shortcomings such as corrodibility is poor, the accurate brilliant AZ91 of the enhancing magnesium alloy of a kind of Mg-Zn-Gd is provided to obtain the second-phase of uniform composition, improve the intensity of alloy and plasticity and erosion resistance, the over-all properties of alloy is significantly improved, meets growing magnesium alloy demand.
The present invention provides the accurate brilliant preparation method strengthening AZ91 magnesium alloy materials of appeal Mg-Zn-Gd simultaneously.On the basis of traditional as cast condition AZ91, add the accurate brilliant master alloy of Mg-Zn-Gd that massfraction is 2 ~ 8%, obtained Mg-Zn-Gd is accurate, and brilliant enhancing AZ91 magnesium alloy method is simple to operation.
The present invention realizes by the following method:
A kind of Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy, it is characterized in that, has following mass percentage to be: Al8.33 ~ 8.82, Zn1.90 ~ 4.39%, Gd0.29 ~ 1.11%, and surplus is Mg; The microscopic appearance that described Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy is: discontinuous netted Mg
17al
12coexist with a small amount of particulate state icosahedral quasicrystal; Described magnesium matrix is α-Mg; What described Mg-Zn-Gd Icosahedral phases strengthened AZ91 magnesium alloy is: the volume fraction of second-phase is 12.42 ~ 20.84%; Average dendrite length is 13.45 ~ 72.61 μm; Described second-phase comprises, discontinuous netted Mg
17al
12with a small amount of particulate state icosahedral quasicrystal; Described dendrite length is the average dendrite length of second-phase.
The preparation method that a kind of Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy is as follows: the accurate brilliant master alloy of preparation Mg-Zn-Gd; Melting AZ91 magnesium alloy, then by after accurate for Mg-Zn-Gd brilliant master alloy and the insulation of AZ91 magnesium alloy smelting, be cast in the Mg-Zn-Gd Icosahedral phases obtaining uniform composition in suitable mould and strengthen AZ91 magnesium alloy.
The accurate brilliant master alloy of described Mg-Zn-Gd, its composition by mass percentage is: 46.12 ~ 46.95%Zn, 14.85 ~ 15.02%Gd, surplus is Mg.
Mg-Zn-Gd Icosahedral phases of the present invention strengthens the preparation method of AZ91 magnesium alloy, comprises the following steps:
1) the accurate brilliant master alloy of Mg-Zn-Gd is prepared:
Getting out magnesium ingot, zinc ingot metal and Mg-Gd master alloy by proportioning is raw material, furnace temperature is risen to 680 ~ 720 DEG C, and magnesium ingot put into plumbago crucible, then plumbago crucible is put into and is full of SF
6-CO
2in the resistance furnace of mixed gas, Mg-Gd master alloy is added after magnesium ingot fusing, finally after the fusing of Mg-Gd master alloy, add zinc ingot metal, insulation 15 ~ 30min after the fusing of zinc material, then plumbago crucible 1 ~ 2min is slowly rocked, put into stove and leave standstill 2 ~ 3min, pour in metal type dies, obtain the Mg-Zn-Gd quasicrystalline alloy of uniform composition;
2) AZ91 magnesium alloy is prepared:
With mass percentage for 8.78 ~ 8.95%Al, 0.83 ~ 0.96%Zn and 90.09 ~ 90.39%Mg is raw material, heat fused is also warming up to 715 ~ 720 DEG C, casting metal type after stirring, obtained AZ91 magnesium alloy, pass into SF6-CO2 in fusion process mixed gas protected, obtain AZ91 magnesium alloy;
3) prepare Mg-Zn-Gd Icosahedral phases and strengthen AZ91 magnesium alloy:
The accurate brilliant master alloy of Mg-Zn-Gd and step 2 prepared by step 1) is got by proportioning) the AZ91 magnesium alloy prepared, at SF
6-CO
2under mixed gas protected; AZ91 magnesium alloy is put into the container being preheating to 680 ~ 700 DEG C; then be warming up to 710 ~ 740 DEG C, after AZ91 magnesium alloy melts completely, accurate for Mg-Zn-Gd brilliant master alloy joined in melt AZ91; after the accurate brilliant master alloy fusing of Mg-Zn-Gd; insulation 20-30min, stirs 1 ~ 2min, leaves standstill 5 ~ 10min; then liquation is poured in the punching block of preheating 200-300 DEG C, the AZ91 magnesium alloy that obtained Mg-Zn-Gd Icosahedral phases strengthens.
Described, the mass percent of step 1) Raw pure zinc ingot, Mg-Gd master alloy and pure magnesium ingot is: 46.12 ~ 46.95%Zn, 14.85 ~ 15.02%Gd, and surplus is pure magnesium ingot; Step 2) obtained AZ91 magnesium alloy, each composition quality percentage composition consists of: 55.00 ~ 56.00%Zn, 5.00 ~ 6.00%Y, and surplus is magnesium; Described, step 2) Raw 8.78 ~ 8.95%Al, 0.83 ~ 0.96%Zn, surplus is Mg; Described, step 3) in, 2.00 ~ 8.00% of the add-on AZ91 raw materials quality of Mg-Zn-Gd quasicrystalline alloy.
Feature of the present invention and beneficial effect are:
(1) the Mg-Zn-Gd Icosahedral phases in the present invention has psuedo-periodicity arrangement, and melt inside has elementide, can provide strengthening phase, crystal grain thinning for alloy.Significantly improve mechanical property and the corrosion resistance nature of alloy;
(2) the present invention is by optimal preparation technology and component proportion, prepare Mg-Zn-Gd Icosahedral phases and strengthen AZ91 magnesium alloy, Mg-Zn-Gd is accurate, and crystalline substance has remelting, elementide is formed in AZ91 magnesium alloy inside, for alloy provides more core, increase the crystal grain quantity of AZ91, because the interfacial energy of Icosahedral phases is less, therefore grain-size obviously reduces;
(3) the Mg-Zn-Gd Icosahedral phases of gained of the present invention strengthens the intensity of AZ91 magnesium alloy, hardness, unit elongation and erosion resistance and significantly improves.
Accompanying drawing explanation
Fig. 1 is micro-organization chart a and the partial enlarged drawing b of Mg-Zn-Gd quasicrystalline alloy prepared by embodiment 3.
Fig. 2 is the micro-organization chart of Mg-Zn-Gd Icosahedral phases enhancing AZ91 magnesium alloy prepared by embodiment 3.
Fig. 3 is the micro-organization chart of AZ91 magnesium alloy prepared by comparative example.
Fig. 4 is that the microscopic appearance of embodiment and comparative example characterizes.
Fig. 5 is the room-temperature mechanical property of embodiment and comparative example.
Embodiment
Below by embodiment and comparative example, Mg-Zn-Gd quasicrystalline alloy of the present invention and preparation method thereof is described further.
Embodiment 1
A kind of Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy, it is characterized in that, has following mass percentage to be: Al8.82, Zn1.90%, Gd0.29%, surplus is Mg.
Following steps are taked to obtain:
1) the accurate brilliant master alloy of Mg-Zn-Gd is prepared:
Getting out magnesium ingot, zinc ingot metal and Mg-Gd master alloy by proportioning is raw material, furnace temperature is risen to 680 DEG C, and magnesium ingot put into plumbago crucible, then plumbago crucible is put into and is full of SF
6-CO
2in the resistance furnace of mixed gas, Mg-Gd master alloy is added after magnesium ingot fusing, finally after the fusing of Mg-Gd master alloy, add zinc ingot metal, 15min is incubated after zinc fusing, then plumbago crucible 1min is slowly rocked, put into stove and leave standstill 2min, pour in metal type dies, obtain the Mg-Zn-Gd quasicrystalline alloy of uniform composition;
2) AZ91 magnesium alloy is prepared:
Take mass percentage as 8.78%Al, 0.83%Zn and 90.39%Mg be raw material, heat fused is also warming up to 715 DEG C, casting metal type after stirring, and obtained AZ91 magnesium alloy, passes into SF in fusion process
6-CO
2mixed gas protected, obtain AZ91 magnesium alloy;
3) prepare Mg-Zn-Gd Icosahedral phases and strengthen AZ91 magnesium alloy:
The accurate brilliant master alloy of Mg-Zn-Gd and step 2 prepared by step 1) is got by proportioning) the AZ91 magnesium alloy prepared, at SF
6-CO
2under mixed gas protected; AZ91 magnesium alloy is put into the container being preheating to 680 DEG C; then be warming up to 710 DEG C, after AZ91 magnesium alloy melts completely, accurate for Mg-Zn-Gd brilliant master alloy joined in melt AZ91; after the accurate brilliant master alloy fusing of Mg-Zn-Gd; insulation 20min, stirs 1min, leaves standstill 5min; then liquation is poured in the punching block of preheating 200 DEG C, the AZ91 magnesium alloy that obtained Mg-Zn-Gd Icosahedral phases strengthens.
The characteristic parameter obtaining alloy microscopic appearance is shown in mark 1, and alloy property is shown in Fig. 5.
Embodiment 2
A kind of Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy, it is characterized in that, has following mass percentage to be: Al8.65%, Zn2.76%, Gd0.58%, surplus is Mg.
Following steps are taked to obtain:
1) the accurate brilliant master alloy of Mg-Zn-Gd is prepared:
Getting out magnesium ingot, zinc ingot metal and Mg-Gd master alloy by proportioning is raw material, furnace temperature is risen to 700 DEG C, and magnesium ingot put into plumbago crucible, then plumbago crucible is put into and is full of SF
6-cO
2in the resistance furnace of mixed gas, Mg-Gd master alloy is added after magnesium ingot fusing, finally after the fusing of Mg-Gd master alloy, add zinc ingot metal, 17min is incubated after zinc fusing, then plumbago crucible 1.25min is slowly rocked, put into stove and leave standstill 2.25min, pour in metal type dies, obtain the Mg-Zn-Gd quasicrystalline alloy of uniform composition;
2) AZ91 magnesium alloy is prepared:
Take mass percentage as 8.82%Al, 0.89%Zn and 90.29%Mg be raw material, heat fused is also warming up to 717 DEG C, casting metal type after stirring, and obtained AZ91 magnesium alloy, passes into SF in fusion process
6-CO
2mixed gas protected, obtain AZ91 magnesium alloy;
3) prepare Mg-Zn-Gd Icosahedral phases and strengthen AZ91 magnesium alloy:
The accurate brilliant master alloy of Mg-Zn-Gd and step 2 prepared by step 1) is got by proportioning) the AZ91 magnesium alloy prepared, at SF
6-CO
2under mixed gas protected; AZ91 magnesium alloy is put into the container being preheating to 685 DEG C; then be warming up to 720 DEG C, after AZ91 magnesium alloy melts completely, accurate for Mg-Zn-Gd brilliant master alloy joined in melt AZ91; after the accurate brilliant master alloy fusing of Mg-Zn-Gd; insulation 23min, stirs 1.2min, leaves standstill 7min; then liquation is poured in the punching block of preheating 225 DEG C, the AZ91 magnesium alloy that obtained Mg-Zn-Gd Icosahedral phases strengthens.
The characteristic parameter obtaining alloy microscopic appearance is shown in mark 1, and alloy property is shown in Fig. 5.
Embodiment 3
A kind of Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy, it is characterized in that, has following mass percentage to be: Al8.49%, Zn3.59%, Gd0.86%, surplus is Mg.
Following steps are taked to obtain:
1) the accurate brilliant master alloy of Mg-Zn-Gd is prepared:
Getting out magnesium ingot, zinc ingot metal and Mg-Gd master alloy by proportioning is raw material, furnace temperature is risen to 720 DEG C, and magnesium ingot put into plumbago crucible, then plumbago crucible is put into and is full of SF
6-CO
2in the resistance furnace of mixed gas, Mg-Gd master alloy is added after magnesium ingot fusing, finally after the fusing of Mg-Gd master alloy, add zinc ingot metal, 20min is incubated after zinc fusing, then plumbago crucible 1.5min is slowly rocked, put into stove and leave standstill 2.5min, pour in metal type dies, obtain the Mg-Zn-Gd quasicrystalline alloy of uniform composition;
2) AZ91 magnesium alloy is prepared:
Take mass percentage as 8.88%Al, 0.93%Zn and 90.19%Mg be raw material, heat fused is also warming up to 719 DEG C, casting metal type after stirring, and obtained AZ91 magnesium alloy, passes into SF in fusion process
6-CO
2mixed gas protected, obtain AZ91 magnesium alloy;
3) prepare Mg-Zn-Gd Icosahedral phases and strengthen AZ91 magnesium alloy:
The accurate brilliant master alloy of Mg-Zn-Gd and step 2 prepared by step 1) is got by proportioning) the AZ91 magnesium alloy prepared, at SF
6-CO
2under mixed gas protected; AZ91 magnesium alloy is put into the container being preheating to 690 DEG C; then be warming up to 730 DEG C, after AZ91 magnesium alloy melts completely, accurate for Mg-Zn-Gd brilliant master alloy joined in melt AZ91; after the accurate brilliant master alloy fusing of Mg-Zn-Gd; insulation 25min, stirs 1.5min, leaves standstill 8min; then liquation is poured in the punching block of preheating 250 DEG C, the AZ91 magnesium alloy that obtained Mg-Zn-Gd Icosahedral phases strengthens.
The characteristic parameter obtaining alloy microscopic appearance is shown in mark 1, and alloy property is shown in Fig. 5.
Embodiment 4
A kind of Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy, it is characterized in that, has following mass percentage to be: Al8.33%, Zn4.39%, Gd1.11%, surplus is Mg.
Following steps are taked to obtain:
1) the accurate brilliant master alloy of Mg-Zn-Gd is prepared:
Getting out magnesium ingot, zinc ingot metal and Mg-Gd master alloy by proportioning is raw material, furnace temperature is risen to 730 DEG C, and magnesium ingot put into plumbago crucible, then plumbago crucible is put into and is full of SF
6-CO
2in the resistance furnace of mixed gas, Mg-Gd master alloy is added after magnesium ingot fusing, finally after the fusing of Mg-Gd master alloy, add zinc ingot metal, 20min is incubated after zinc fusing, then plumbago crucible 1.75min is slowly rocked, put into stove and leave standstill 2.25min, pour in metal type dies, obtain the Mg-Zn-Gd quasicrystalline alloy of uniform composition;
2) AZ91 magnesium alloy is prepared:
Take mass percentage as 8.90%Al, 0.92%Zn and 90.18%Mg be raw material, heat fused is also warming up to 718 DEG C, casting metal type after stirring, and obtained AZ91 magnesium alloy, passes into SF in fusion process
6-CO
2mixed gas protected, obtain AZ91 magnesium alloy;
3) prepare Mg-Zn-Gd Icosahedral phases and strengthen AZ91 magnesium alloy:
The accurate brilliant master alloy of Mg-Zn-Gd and step 2 prepared by step 1) is got by proportioning) the AZ91 magnesium alloy prepared, at SF
6-CO
2under mixed gas protected; AZ91 magnesium alloy is put into the container being preheating to 695 DEG C; then be warming up to 735 DEG C, after AZ91 magnesium alloy melts completely, accurate for Mg-Zn-Gd brilliant master alloy joined in melt AZ91; after the accurate brilliant master alloy fusing of Mg-Zn-Gd; insulation 27min, stirs 1.7min, leaves standstill 9min; then liquation is poured in the punching block of preheating 275 DEG C, the AZ91 magnesium alloy that obtained Mg-Zn-Gd Icosahedral phases strengthens.
The characteristic parameter obtaining alloy microscopic appearance is shown in mark 1, and alloy property is shown in Fig. 5.
Embodiment 5
A kind of Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy, it is characterized in that, has following mass percentage to be: Al8.18%, Zn5.16%, Gd0.1.36%, surplus is Mg.
Following steps are taked to obtain:
1) the accurate brilliant master alloy of Mg-Zn-Gd is prepared:
Getting out magnesium ingot, zinc ingot metal and Mg-Gd master alloy by proportioning is raw material, furnace temperature is risen to 740 DEG C, and magnesium ingot put into plumbago crucible, then plumbago crucible is put into and is full of SF
6-CO
2in the resistance furnace of mixed gas, Mg-Gd master alloy is added after magnesium ingot fusing, finally after the fusing of Mg-Gd master alloy, add zinc ingot metal, 30min is incubated after zinc fusing, then plumbago crucible 12min is slowly rocked, put into stove and leave standstill 3min, pour in metal type dies, obtain the Mg-Zn-Gd quasicrystalline alloy of uniform composition;
2) AZ91 magnesium alloy is prepared:
Take mass percentage as 8.95%Al, 0.96%Zn and 90.09%Mg be raw material, heat fused is also warming up to 720 DEG C, casting metal type after stirring, and obtained AZ91 magnesium alloy, passes into SF in fusion process
6-CO
2mixed gas protected, obtain AZ91 magnesium alloy;
3) prepare Mg-Zn-Gd Icosahedral phases and strengthen AZ91 magnesium alloy:
The accurate brilliant master alloy of Mg-Zn-Gd and step 2 prepared by step 1) is got by proportioning) the AZ91 magnesium alloy prepared, at SF
6-CO
2under mixed gas protected; AZ91 magnesium alloy is put into the container being preheating to 700 DEG C; then be warming up to 740 DEG C, after AZ91 magnesium alloy melts completely, accurate for Mg-Zn-Gd brilliant master alloy joined in melt AZ91; after the accurate brilliant master alloy fusing of Mg-Zn-Gd; insulation 30min, stirs 2min, leaves standstill 10min; then liquation is poured in the punching block of preheating 300 DEG C, the AZ91 magnesium alloy that obtained Mg-Zn-Gd Icosahedral phases strengthens.
Gained alloy microscopic appearance characteristic parameter is shown in Fig. 4, and alloy property is shown in Fig. 5.
Comparative example
A kind of as-cast AZ91 magnesium alloy, is characterized in that, has following mass percentage to be: Al8.88%, Zn0.93%, surplus is Mg.
Following steps are taked to obtain:
Choose mass percent be Al8.88%, Zn0.93% and Mg90.19% as raw material, stove is risen to 720 DEG C, passes into SF
6-CO
2mixed gas protected, first Mg is put into crucible, after fusing, be incubated 20min, add Al material and Zn material successively, after Al and Zn fusing, stir 1min, after insulation 10min, pour in the punching block of preheating 250 DEG C, obtain As-Cast AZ 91 Magnesium Alloy.
The AZ91 magnesium alloy that comparative example prepares, each composition weight percentage composition is 8.85%Al, 0.941%Zn, and surplus is magnesium.In obtained AZ91 magnesium alloy, the volume fraction of second-phase is 25.32%.The obtained average dendrite length of AZ91 magnesium alloy is 76.32 μm; Second-phase is Mg
17al
12phase; Crystal grain is the crystal grain of magnesium matrix α-Mg under second-phase effect; AZ91 magnesium alloy microscopic appearance is: large stretch of continuous print Mg
17al
12be distributed in magnesium matrix crystal boundary, described magnesium matrix is α-Mg;
Gained alloy microscopic appearance characteristic parameter is shown in Fig. 4, and alloy property is shown in Fig. 5.
The AZ91 magnesium alloy choosing the close composition with embodiment compares, and the weight ratio of each element of AZ91 of comparative example is: Al8.88%, Zn0.93%, and surplus is Mg.
The microscopic appearance characterization parameter of comparative example and each embodiment as shown in Figure 4; The mechanical property of comparative example and each embodiment and corrosion resistance nature comparing result are as shown in Figure 5.
Result shows, in alloy of the present invention, dendrite length obviously reduces, and comprehensive mechanical property obviously promotes, corrosive nature significantly improves: tensile strength the highest raising 93MPa, improves 55.69%, yield strength the highest raising 25MPa, improve 38.46%, unit elongation is the highest is promoted to 4.1%.
Claims (8)
1. Mg-Zn-Gd Icosahedral phases strengthens an AZ91 magnesium alloy, it is characterized in that, has following mass percentage to be: Al8.33 ~ 8.82, Zn1.90 ~ 4.39%, Gd0.29 ~ 1.11%, surplus is Mg.
2. AZ91 magnesium alloy according to claim 1, is characterized in that, microscopic appearance is: discontinuous netted Mg
17al
12coexist with a small amount of particulate state icosahedral quasicrystal; Described magnesium matrix is α-Mg.
3. Mg-Zn-Gd Icosahedral phases according to claim 1 strengthens AZ91 magnesium alloy, it is characterized in that: the volume fraction of second-phase is 12.42 ~ 20.84%; Average dendrite length is 13.45 ~ 72.61 μm; Described second-phase comprises, discontinuous netted Mg
17al
12with a small amount of particulate state icosahedral quasicrystal; Described dendrite length is the average dendrite length of second-phase.
4. the Mg-Zn-Gd Icosahedral phases of claim 1 strengthens a preparation method for AZ91 magnesium alloy, it is characterized in that: first prepare the accurate brilliant master alloy of Mg-Zn-Gd; Melting AZ91 magnesium alloy; Again by Mg-Zn-Gd master alloy, AZ91 magnesium alloy smelting, obtained Mg-Zn-Gd Icosahedral phases strengthens AZ91 magnesium alloy.
5. preparation method according to claim 4, is characterized in that: the accurate brilliant master alloy of described Mg-Zn-Gd, its composition by mass percentage is: 46.12 ~ 46.95%Zn, 14.85 ~ 15.02%Gd, surplus is Mg.
6. preparation method according to claim 4, is characterized in that, comprises the following steps:
1) the accurate brilliant master alloy of Mg-Zn-Gd is prepared:
Getting out magnesium ingot, zinc ingot metal and Mg-Gd master alloy by proportioning is raw material, furnace temperature is risen to 680 ~ 740 DEG C, and magnesium ingot put into plumbago crucible, then plumbago crucible is put into and is full of SF
6-CO
2in the resistance furnace of mixed gas, Mg-Gd master alloy is added after magnesium ingot fusing, finally after the fusing of Mg-Gd master alloy, add zinc ingot metal, insulation 15 ~ 30min after zinc fusing, then plumbago crucible 1 ~ 2min is slowly rocked, put into stove and leave standstill 2 ~ 3min, pour in metal type dies, obtain the Mg-Zn-Gd quasicrystalline alloy of uniform composition;
2) AZ91 magnesium alloy is prepared:
With mass percentage for 8.78 ~ 8.95%Al, 0.83 ~ 0.96%Zn and 90.09 ~ 90.39%Mg is raw material, and heat fused is also warming up to 715 ~ 720 DEG C, casting metal type after stirring, and obtained AZ91 magnesium alloy, passes into SF in fusion process
6-CO
2mixed gas protected, obtain AZ91 magnesium alloy;
3) prepare Mg-Zn-Gd Icosahedral phases and strengthen AZ91 magnesium alloy:
The accurate brilliant master alloy of Mg-Zn-Gd and step 2 prepared by step 1) is got by proportioning) the AZ91 magnesium alloy prepared, at SF
6-CO
2under mixed gas protected; AZ91 magnesium alloy is put into the container being preheating to 680 ~ 700 DEG C; then be warming up to 710 ~ 740 DEG C, after AZ91 magnesium alloy melts completely, accurate for Mg-Zn-Gd brilliant master alloy joined in melt AZ91; after the accurate brilliant master alloy fusing of Mg-Zn-Gd; insulation 20-30min, stirs 1 ~ 2min, leaves standstill 5 ~ 10min; then liquation is poured in the punching block of preheating 200-300 DEG C, the AZ91 magnesium alloy that obtained Mg-Zn-Gd Icosahedral phases strengthens.
7. preparation method according to claim 6, is characterized in that: described, and the mass percent of step 1) Raw pure zinc ingot, Mg-Gd master alloy and pure magnesium ingot is: 46.12 ~ 46.95%Zn, 14.85 ~ 15.02%Gd, and surplus is pure magnesium ingot; Step 2) obtained AZ91 magnesium alloy, each composition quality percentage composition consists of: 55.00 ~ 56.00%Zn, 5.00 ~ 6.00%Y, and surplus is magnesium; Described, step 2) Raw 8.78 ~ 8.95%Al, 0.83 ~ 0.96%Zn, surplus is Mg.
8. preparation method according to claim 6, is characterized in that: described step 3) in, 2.00 ~ 10.00% of the add-on AZ91 raw materials quality of Mg-Zn-Gd quasicrystalline alloy.
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112376A (en) * | 2018-09-25 | 2019-01-01 | 南昌大学 | A kind of preparation method of Mg-Al-Zn-Mn-Gd corrosion resistant rare earth magnesium alloy |
| CN109763009A (en) * | 2019-03-07 | 2019-05-17 | 济南大学 | A kind of method of current processing Mg-Zn-Gd quasicrystalline alloy |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264746A (en) * | 2000-01-28 | 2000-08-30 | 上海交通大学 | Crystalloidal particles reinforced Mg-base compound material |
| KR20050032715A (en) * | 2003-10-02 | 2005-04-08 | 학교법인연세대학교 | Superplastic mg-based alloys dispersed by thermally stable quasicrystalline particles and method making the same |
| JP2008069438A (en) * | 2006-09-15 | 2008-03-27 | Toyota Motor Corp | High-strength magnesium alloy, and its production method |
| CN101787481A (en) * | 2010-03-22 | 2010-07-28 | 北京工业大学 | Quasicrystal intermediate alloy containing Mg-Zn-Gd radical and preparation method thereof |
| CN101787475A (en) * | 2010-03-22 | 2010-07-28 | 北京工业大学 | Quasicrystal particle reinforced magnesium matrix composite material and preparation method thereof |
-
2015
- 2015-10-14 CN CN201510658774.8A patent/CN105331866B/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1264746A (en) * | 2000-01-28 | 2000-08-30 | 上海交通大学 | Crystalloidal particles reinforced Mg-base compound material |
| KR20050032715A (en) * | 2003-10-02 | 2005-04-08 | 학교법인연세대학교 | Superplastic mg-based alloys dispersed by thermally stable quasicrystalline particles and method making the same |
| JP2008069438A (en) * | 2006-09-15 | 2008-03-27 | Toyota Motor Corp | High-strength magnesium alloy, and its production method |
| JP4849402B2 (en) * | 2006-09-15 | 2012-01-11 | トヨタ自動車株式会社 | High strength magnesium alloy and method for producing the same |
| CN101787481A (en) * | 2010-03-22 | 2010-07-28 | 北京工业大学 | Quasicrystal intermediate alloy containing Mg-Zn-Gd radical and preparation method thereof |
| CN101787475A (en) * | 2010-03-22 | 2010-07-28 | 北京工业大学 | Quasicrystal particle reinforced magnesium matrix composite material and preparation method thereof |
Non-Patent Citations (2)
| Title |
|---|
| 刘腾等: "MZY准晶增强AZ91镁合金中MZY准晶颗粒形貌的演变", 《稀有金属材料与工程》 * |
| 袁武华等: "准晶相增强高性能镁合金的研究进展", 《材料导报》 * |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109112376A (en) * | 2018-09-25 | 2019-01-01 | 南昌大学 | A kind of preparation method of Mg-Al-Zn-Mn-Gd corrosion resistant rare earth magnesium alloy |
| CN109763009A (en) * | 2019-03-07 | 2019-05-17 | 济南大学 | A kind of method of current processing Mg-Zn-Gd quasicrystalline alloy |
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| CN105331866B (en) | 2017-06-23 |
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