CN101078078A - Magnesium-aluminum-manganese alloy containing rare earth and preparation method thereof - Google Patents
Magnesium-aluminum-manganese alloy containing rare earth and preparation method thereof Download PDFInfo
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Abstract
A kind of Mg-Al-Mn alloy containing rare-earth, and the preparation method of it. The components of it and the weight percent of them is : Al: 8-11, Zn 0.8-1.0, Mn 0.1-0.3; Er 0.15-3.0 or Sm 0.1-1.0; 0<Fe<=0.01, the other is Mg. The preparation method is as following: Firstly, the pure Mg will be put into melter, and the temperature will be increased to 650-700deg.C, and then the foundry alloy after being roasted will be added in turns( according the order: Al, Al-Mn and Zn), salt-mixture will be dusted on the liquid level of the alloy to protect the melt; the rare-earth will be added in when the temperature is increased to 700-750deg.C, and it will be agitated and dross trap; the alloy will be refined with C2Cl6 refining reagent; then the temperature will be decreased to 700-720deg.C, and the material will be stewed, cast, and cooled. The technology of this patent is simple, and rare-earth element Er or Sm will be added in the process of melting, and it can effectively thin the Mg,-Al-Zn-Mn alloy cast crystal grain. And Mg,-Al-Zn-Mn alloy containing rare-earth, which own high quality, low impurity content and exiguous cast crystal grain. The rigidity HB of the alloy is more than 60, the resistance to tensile stress at normal temperature sigma b is more than 200MPa, the elongation rate delta is more than 3%.
Description
Technical field
The present invention relates to a kind of magnesium-aluminum-manganese alloy, relate to a kind of magnesium-aluminum-manganese alloy that contains rare earth and preparation method thereof.Belong to the non-ferrous metal technical field.
Background technology
Density is low because of having for magnesium alloy, specific tenacity and specific rigidity height, advantages such as effectiveness is good, shock-absorbing performance is good, easy recovery, is widely used in fields such as automobile, communication, electronics, household electrical appliances, instrument and aerospace.Because magnesium alloy is a close-packed hexagonal structure, the temperature-room type plasticity working ability is poor, so also have only cast magnesium alloys to obtain a large amount of application at present.Yet wrought magnesium alloys has higher intensity and ductility than cast magnesium alloys, and more diversified mechanical property.By the mode of refinement magnesium alloy cast crystal grain, can improve the deformation performance of magnesium alloy.
The thinning method of general magnesium alloy cast tissue has two classes, promptly rotten the processing and strong outer field action, and the rotten application of handling in magnesium alloy cast production reality is very extensive, and metamorphism treatment method commonly used has: the 1. carbon method that goes bad; 2. purifying method often adopts C
2Cl
63. add alloy element, such as interpolation Zr, Sr, rare earth element, but the Zr element generally has better effects to the magnesium zinc magnesium alloy, and the magnalium series magnesium alloy is not had thinning effect.
Still do not utilize at present erbium or samarium micro-alloying technology to promote the report of magnesium-aluminum-manganese alloy structural transformation and its mechanical property of raising.
Summary of the invention
The purpose of this invention is to provide effectively refinement magnesium alloy cast crystal grain of a kind of magnesium-aluminum-manganese alloy that contains rare earth, improve its room-temperature mechanical property.
Another object of the present invention provides and a kind ofly can prepare the above-mentioned magnesium-aluminum-manganese alloy alloy that contains rare earth well, and technology is simple, and the quality product performance everyway of being produced is very good.
Purpose of the present invention is achieved through the following technical solutions.
The magnesium-aluminum-manganese alloy that contains rare earth of the present invention contains Al, Zn, Mn, Mg, also contains Er or Sm, and the weight percent of each component is: Al 8～11, and Zn 0.8～1.0, and Mn 0.1～0.3,0＜Fe≤0.01; Er 0.15～3.0 or Sm 0.1～1.0; All the other are Mg.
The preparation method who contains the magnesium-aluminum-manganese alloy of rare earth of the present invention is: earlier pure magnesium is put into smelting furnace, be warming up to 650～700 ℃, put into master alloy (according to the order of Al, Al-Mn and Zn) more successively, spread the mixing salt insulating covering agent at the alloy liquid level and carry out melt protecting through baking; When being warming up to 700～750 ℃, add rare earth, stir and skim; The refining of alloy liquid; Be cooled to 700～720 ℃, leave standstill, casting, cooling, acquisition contains the magnesium-aluminum-manganese alloy of rare earth.
Described mixing salt insulating covering agent is formed and weight percent: MgCl
250～60, CaF
215～25, CaCl
210～15, BaCl
25～10, KCl 3～5, and NaCl 2～4.
Described rare earth erbium or samarium add with the form of aluminium erbium master alloy or aluminium samarium master alloy.
The present invention adopts C
2Cl
6Refining agent carries out alloy liquid refining treatment; Adopt Ar during casting
2The protection casting.Cooling then is that mould is adopted the recirculated water cooling.
Compared with prior art, advantage of the present invention also is:
Alloy of the present invention adds rare earth element er or Sm, and as-cast structure that not only can the refinement alloy can also improve the mechanical property of alloy material well; The hardness HB of cast alloy surpasses 60, the room temperature tensile strength sigma
bSurpass 200MPa, elongation δ surpasses 3%.
Technological process of the present invention is simple and easy to do, can produce the magnesium-aluminum-manganese alloy that foreign matter content is low, superior in quality, as cast condition crystal grain is tiny, mechanical property contains rare earth preferably.
In addition, technology of the present invention has also used the mixing salt insulating covering agent to protect whole fusion process further, reduces the scaling loss of alloying element and rare earth element; Adopt C
2Cl
6Refining agent carries out refining treatment, reaches further that degasification is removed slag and thinning effect; Adopt Ar
2Protection and casting and recirculated water cooling mould, casting defects such as the pore of minimizing ingot casting, shrinkage cavity; Thereby prepare superior in quality ingot casting.
Concrete preparation technology of the present invention is:
The melting and the casting process that contain the magnesium-aluminum-manganese alloy of rare earth are: earlier pure magnesium is put into the crucible for smelting stove, be warming up to 650～700 ℃, put into master alloy (according to the order of Al, Al-Mn and Zn) more successively, spread the mixing salt insulating covering agent at the alloy liquid level and carry out melt protecting through baking; When being warming up to 700～750 ℃, add rare earth, stir and skim; Use C
2Cl
6Refining agent carries out refining to alloy liquid; Be cooled to 700～720 ℃, left standstill 10～20 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.Casting obtains to contain the magnesium-aluminum-manganese alloy of rare earth.
As follows by the most preferred embodiment that above-mentioned technology obtained:
Add 1.02% the formed magnesium-aluminum-manganese alloy of Er, its component and weight percent are: 8.95%Al, and 0.95%Zn, 0.18%Mn, 1.02%Er, 0.009%Fe, all the other are Mg.Alloy melting in the crucible for smelting stove with mixing salt insulating covering agent protection melt, is adopted C
2Cl
6Refining agent carries out the melt refining, adopts Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.Hardness HB 〉=70 of the magnesium-aluminum-manganese alloy that contains rare earth that obtains, the room temperature tensile strength sigma
b〉=230MPa, elongation δ 〉=5%.
Add 2.15% the formed magnesium-aluminum-manganese alloy of Er, its component and weight percent are: 8.14%Al, and 0.93%Zn, 0.14%Mn, 2.15%Er, 0.007%Fe, all the other are the Mg alloy.Alloy melting in the crucible for smelting stove with mixing salt insulating covering agent protection melt, is adopted C
2Cl
6Refining agent carries out the melt refining, adopts Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The hardness HB of cast alloy 〉=80, the room temperature tensile strength sigma
b〉=240MPa, elongation δ 〉=4%.
Add 3.0% the formed magnesium-aluminum-manganese alloy of Er, its component and weight percent are: 10.62%Al, and 0.82%Zn, 0.19%Mn, 3.0%Er, 0.01%Fe, all the other are Mg.Alloy melting in the crucible for smelting stove with mixing salt insulating covering agent protection melt, is adopted C
2Cl
6Refining agent carries out the melt refining, adopts Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The hardness HB of cast alloy 〉=100; The room temperature tensile strength sigma
b〉=280MPa, elongation δ 〉=3%.
Add 0.58% the formed magnesium-aluminum-manganese alloy of Sm, its component and weight percent are: 10.30%Al, and 0.95%Zn, 0.21%Mn, 0.58%Sm, 0.008%Fe, all the other are Mg.Alloy melting in the crucible for smelting stove with mixing salt insulating covering agent protection melt, is adopted C
2Cl
6Refining agent carries out the melt refining, adopts Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The hardness HB of cast alloy 〉=80; The room temperature tensile strength sigma
b〉=260MPa, elongation δ 〉=4%.
Add 1.00% the formed magnesium-aluminum-manganese alloy of Sm, its component and weight percent are: 1.00%Al, and 0.98%Zn, 0.10%Mn, 1.00%Sm, 0.007%Fe, all the other are Mg.Alloy melting in the crucible for smelting stove with mixing salt insulating covering agent protection melt, is adopted C
2Cl
6Refining agent carries out the melt refining, adopts Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The hardness HB of cast alloy 〉=90; The room temperature tensile strength sigma
b〉=280MPa, elongation δ 〉=3%.
Description of drawings
Fig. 1: the as-cast structure photo of comparative example's 1 alloy of the present invention;
Fig. 2: the as-cast structure photo of the embodiment of the invention 1 alloy;
Fig. 3: the as-cast structure photo of the embodiment of the invention 2 alloys;
Fig. 4: the as-cast structure photo of the embodiment of the invention 3 alloys;
Fig. 5: the as-cast structure photo of the embodiment of the invention 4 alloys;
Fig. 6: the as-cast structure photo of the embodiment of the invention 5 alloys;
Fig. 7: the as-cast structure photo of the embodiment of the invention 6 alloys;
Fig. 8: the as-cast structure photo of the embodiment of the invention 7 alloys.
Embodiment
Provide following example in conjunction with method of the present invention:
Embodiments of the invention are that (Al 8～11, and Zn 0.8～1.0, and Mn 0.1～0.3 at magnesium-aluminum-manganese alloy; Er 0.15～3.0 or Sm 0.1～1.0; 0＜Fe≤0.01, surplus is Mg) add the erbium or the samarium of different content in the batching, its composition is as shown in table 1.Alloy shown in the embodiments of the invention has mechanical property preferably, and its mechanical property has surpassed the magnesium-aluminum-manganese alloy (shown in the table 2) shown in the comparative example 1 who does not add rare earth element.Specific embodiment is described as follows:
The comparative example 1:
Do not add rare earth element in the magnesium-aluminum-manganese alloy, alloying ingredient (raw material is: No. 2 pure magnesiums, A00 fine aluminium, Al-10Mn master alloy, pure zinc) melting in the crucible for smelting stove.Earlier pure magnesium is put into the crucible for smelting stove, be warming up to 670 ℃, put into the master alloy (according to the order of Al, Al-Mn and Zn) through baking more successively, (composition and weight percent are: MgCl to spread the mixing salt insulating covering agent at the alloy liquid level
260%, CaF
215%, CaCl
215%, BaCl
25%, KCl 3%, and NaCl 2%) carry out melt protecting; Be warmed up to 750 ℃, stir and skim; C with alloying ingredient gross weight 2%
2Cl
6Refining agent (C
2Cl
6It is 10 millimeters right cylinder that refining agent is pressed into diameter in advance) alloy liquid is carried out refining; Be cooled to 700 ℃, left standstill 10 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The microstructure of ingot casting as shown in Figure 1, it is thicker to demonstrate crystal grain.The component of alloy and weight percent thereof are: 9.00%Al-1.00%Zn-0.20%Mn-0.01%Fe, all the other are Mg.
Embodiment 1:
In magnesium-aluminum-manganese alloy, add 0.15%Er, alloying ingredient (raw material is: No. 2 pure magnesiums, A00 fine aluminium, Al-10Mn master alloy, pure zinc, Al-10Er master alloy) melting in the crucible for smelting stove.Earlier pure magnesium is put into the crucible for smelting stove, be warming up to 700 ℃, put into the master alloy (according to the order of Al, Al-Mn and Zn) through baking more successively, (composition and weight percent are: MgCl to spread the mixing salt insulating covering agent at the alloy liquid level
255%, CaF
220%, CaCl
210%, BaCl
210%, KCl 3%, and NaCl 2%) carry out melt protecting; Be warmed up to 730 ℃, stir and skim; C with alloying ingredient gross weight 2%
2Cl
6Refining agent (C
2Cl
6It is 10 millimeters right cylinder that refining agent is pressed into diameter in advance) alloy liquid is carried out refining; Be cooled to 710 ℃, left standstill 15 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The microstructure of ingot casting as shown in Figure 2, relative embodiment 1, crystal grain obtains refinement.The component of alloy and weight percent thereof are 9.32%Al-1.00%Zn-0.21%Mn-0.15%Er-0.01%Fe, and all the other are Mg.
Embodiment 2:
In magnesium-aluminum-manganese alloy, add 1.02%Er, alloying ingredient (raw material is: No. 2 pure magnesiums, A00 fine aluminium, Al-10Mn master alloy, pure zinc, Al-10Er master alloy) melting in the crucible for smelting stove.Earlier pure magnesium is put into the crucible for smelting stove, be warming up to 700 ℃, put into the master alloy (according to the order of Al, Al-Mn and Zn) through baking more successively, (composition and weight percent are: MgCl to spread the mixing salt insulating covering agent at the alloy liquid level
260%, CaF
215%, CaCl
210%, BaCl
210%, KCl 3%, and NaCl 2%) carry out melt protecting; Be warmed up to 750 ℃, stir and skim; C with alloying ingredient gross weight 2%
2Cl
6Refining agent (C
2Cl
6It is 10 millimeters right cylinder that refining agent is pressed into diameter in advance) alloy liquid is carried out refining; Be cooled to 700 ℃, left standstill 15 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The microstructure of ingot casting as shown in Figure 3, relative embodiment 1, crystal grain obtains refinement.The component of alloy and weight percent thereof are 8.95%Al-0.95%Zn-0.18%Mn-1.02%Er-0.009%Fe, and all the other are Mg.
Embodiment 3:
In magnesium-aluminum-manganese alloy, add 2.15%Er, alloying ingredient (raw material is: No. 2 pure magnesiums, A00 fine aluminium, Al-10Mn master alloy, pure zinc, Al-10Er master alloy) melting in the crucible for smelting stove.Earlier pure magnesium is put into the crucible for smelting stove, be warming up to 680 ℃, put into the master alloy (according to the order of Al, Al-Mn and Zn) through baking more successively, (composition and weight percent are: MgCl to spread the mixing salt insulating covering agent at the alloy liquid level
260%, CaF
215%, CaCl
210%, BaCl
210%, KCl 3%, and NaCl 2%) carry out melt protecting; Be warmed up to 740 ℃, stir and skim; C with alloying ingredient gross weight 2%
2Cl
6Refining agent (C
2Cl
6It is 10 millimeters right cylinder that refining agent is pressed into diameter in advance) alloy liquid is carried out refining; Be cooled to 710 ℃, left standstill 20 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The microstructure of ingot casting as shown in Figure 4, relative embodiment 1, crystal grain obtains refinement.The component of alloy and weight percent thereof are 8.14%Al-0.93%Zn-0.14%Mn-2.15%Er-0.007%Fe, and all the other are Mg.
Embodiment 4:
In magnesium-aluminum-manganese alloy, add 3.00%Er, alloying ingredient (raw material is: No. 2 pure magnesiums, A00 fine aluminium, Al-10Mn master alloy, pure zinc, Al-10Er master alloy) melting in the crucible for smelting stove.Earlier pure magnesium is put into the crucible for smelting stove, be warming up to 700 ℃, put into the master alloy (according to the order of Al, Al-Mn and Zn) through baking more successively, (composition and weight percent are: MgCl to spread the mixing salt insulating covering agent at the alloy liquid level
260%, CaF
215%, CaCl
210%, BaCl
210%, KCl3%, NaCl 2%) carry out melt protecting; Be warmed up to 750 ℃, stir and skim; C with alloying ingredient gross weight 2%
2Cl
6Refining agent (C
2Cl
6It is 10 millimeters right cylinder that refining agent is pressed into diameter in advance) alloy liquid is carried out refining; Be cooled to 720 ℃, left standstill 20 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The microstructure of ingot casting as shown in Figure 5, relative embodiment 1, crystal grain obtains refinement.The component of alloy and weight percent thereof are 10.62%Al-0.82%Zn-0.19%Mn-3.00%Er-0.01%Fe, and all the other are Mg.
Embodiment 5:
In magnesium-aluminum-manganese alloy, add 0.12%Sm, alloying ingredient (raw material is: No. 2 pure magnesiums, A00 fine aluminium, Al-10Mn master alloy, pure zinc, Al-10Sm master alloy) melting in the crucible for smelting stove.Earlier pure magnesium is put into the crucible for smelting stove, be warming up to 680 ℃, put into the master alloy (according to the order of Al, Al-Mn and Zn) through baking more successively, (composition and weight percent are: MgCl to spread the mixing salt insulating covering agent at the alloy liquid level
250%, CaF
220%, CaCl
215%, BaCl
210%, KCl 3%, and NaCl 2%) carry out melt protecting; Be warmed up to 730 ℃, stir and skim; C with alloying ingredient gross weight 2%
2Cl
6Refining agent (C
2Cl
6It is 10 millimeters right cylinder that refining agent is pressed into diameter in advance) alloy liquid is carried out refining; Be cooled to 710 ℃, left standstill 10 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The microstructure of ingot casting as shown in Figure 6, relative embodiment 1, crystal grain obtains refinement.The component of alloy and weight percent thereof are 9.54%Al-0.85%Zn-0.30%Mn-0.12%Sm-0.006%Fe, and all the other are Mg.
Embodiment 6:
In magnesium-aluminum-manganese alloy, add 0.58%Sm, alloying ingredient (raw material is: No. 2 pure magnesiums, A00 fine aluminium, Al-10Mn master alloy, pure zinc, Al-10Sm master alloy) melting in the crucible for smelting stove.Earlier pure magnesium is put into the crucible for smelting stove, be warming up to 670 ℃, put into the master alloy (according to the order of Al, Al-Mn and Zn) through baking more successively, (composition and weight percent are: MgCl to spread the mixing salt insulating covering agent at the alloy liquid level
250%, CaF
220%, CaCl
215%, BaCl
210%, KCl 3%, and NaCl 2%) carry out melt protecting; Be warmed up to 710 ℃, stir and skim; C with alloying ingredient gross weight 2%
2Cl
6Refining agent (C
2Cl
6It is 10 millimeters right cylinder that refining agent is pressed into diameter in advance) alloy liquid is carried out refining; Be cooled to 700 ℃, left standstill 15 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The microstructure of ingot casting as shown in Figure 7, relative embodiment 1, crystal grain obtains refinement.The component of alloy and weight percent thereof are 10.30%Al-0.95%Zn-0.21%Mn-0.58%Sm-0.008%Fe, and all the other are Mg.
Embodiment 7:
In magnesium-aluminum-manganese alloy, add 1.00%Sm, alloying ingredient (raw material is: No. 2 pure magnesiums, A00 fine aluminium, Al-10Mn master alloy, pure zinc, Al-10Sm master alloy) melting in the crucible for smelting stove.Earlier pure magnesium is put into the crucible for smelting stove, be warming up to 690 ℃, put into the master alloy (according to the order of Al, Al-Mn and Zn) through baking more successively, (composition and weight percent are: MgCl to spread the mixing salt insulating covering agent at the alloy liquid level
250%, CaF
220%, CaCl
215%, BaCl
210%, KCl 3%, and NaCl 2%) carry out melt protecting; Be warmed up to 730 ℃, stir and skim; C with alloying ingredient gross weight 2%
2Cl
6Refining agent (C
2Cl
6It is 10 millimeters right cylinder that refining agent is pressed into diameter in advance) alloy liquid is carried out refining; Be cooled to 700 ℃, left standstill 20 minutes, cast, adopt Ar during casting
2Protection, mould are adopted swage and are used the recirculated water water-cooled.The microstructure of ingot casting as shown in Figure 8, relative embodiment 1, crystal grain obtains refinement.The component of alloy and weight percent thereof are 11.0%Al-0.98%Zn-0.10%Mn-1.00%Sm-0.007%Fe, and all the other are Mg.
The main chemical compositions of table 1 cast alloy of the present invention (weight percent)
| Alloy | Al | Zn | Mn | Er | Sm | Fe | Mg |
| The comparative example 1 | 9.00 | 1.00 | 0.20 | - | - | 0.01 | Surplus |
| Embodiment 1 | 9.32 | 1.00 | 0.21 | 0.15 | - | 0.008 | Surplus |
| Embodiment 2 | 8.95 | 0.95 | 0.18 | 1.02 | - | 0.009 | Surplus |
| Embodiment 3 | 8.14 | 0.93 | 0.14 | 2.15 | - | 0.007 | Surplus |
| Embodiment 4 | 10.62 | 0.82 | 0.19 | 3.00 | - | 0.01 | Surplus |
| Embodiment 5 | 9.54 | 0.85 | 0.30 | - | 0.12 | 0.006 | Surplus |
| Embodiment 6 | 10.30 | 0.95 | 0.21 | - | 0.58 | 0.008 | Surplus |
| Embodiment 7 | 11.00 | 0.98 | 0.10 | - | 1.00 | 0.007 | Surplus |
Table 2 cast alloy room-temperature mechanical property of the present invention
| Hardness HB | Tensile strength sigma b/MPa | Elongation δ/% | |
| The comparative example 1 | 61 | 195 | 6.3 |
| Embodiment 1 | 65.8 | 218 | 5.8 |
| Embodiment 2 | 74.5 | 235 | 5.2 |
| | 73.6 | 242 | 4.8 |
| Embodiment 4 | 101.0 | 295 | 3.3 |
| Embodiment 5 | 70.5 | 241 | 5.6 |
| Embodiment 6 | 86.5 | 267 | 4.7 |
| Embodiment 7 | 93.9 | 286 | 3.9 |
Claims (10)
1, a kind of magnesium-aluminum-manganese alloy that contains rare earth contains Al, Zn, Mn, Mg, it is characterized in that also containing Er or Sm, and the weight percent of each component is: Al 8～11, and Zn 0.8～1.0, and Mn 0.1～0.3,0＜Fe≤0.01; Er 0.15～3.0 or Sm 0.1～1.0; All the other are Mg.
2, a kind of magnesium-aluminum-manganese alloy that contains rare earth according to claim 1 is characterized in that, the component and the weight percent thereof of the alloy that Er forms of interpolation 1.02% are: 8.95%Al, 0.95%Zn, 0.18%Mn, 1.02%Er, 0.009%Fe, all the other are Mg.
3, a kind of magnesium-aluminum-manganese alloy that contains rare earth according to claim 1 is characterized in that, the component and the weight percent thereof of the formed alloy of Er of interpolation 2.15% are: 8.14%Al, 0.93%Zn, 0.14%Mn, 2.15%Er, 0.007%Fe, all the other are Mg.
4, a kind of magnesium-aluminum-manganese alloy that contains rare earth according to claim 1 is characterized in that, the component and the weight percent thereof of the formed alloy of Er of interpolation 3.0% are: 10.62%Al, 0.82%Zn, 0.19%Mn, 3.0%Er, 0.01%Fe, all the other are Mg.
5, a kind of magnesium-aluminum-manganese alloy that contains rare earth according to claim 1 is characterized in that, add 0.58% the formed alloy of Sm component and weight percent thereof be: 10.30%Al, 0.95%Zn, 0.21%Mn, 0.58%Sm, 0.008%Fe, all the other are Mg.
6, a kind of magnesium-aluminum-manganese alloy that contains rare earth according to claim 1 is characterized in that, the component and the weight percent thereof of the formed alloy of Sm of interpolation 1.00% are: 11.00%Al, 0.98%Zn, 0.10%Mn, 1.00%Sm, 0.007%Fe, all the other are Mg.
7, the described a kind of preparation method who contains the magnesium-aluminum-manganese alloy of rare earth of claim 1, it is characterized in that: earlier pure magnesium is put into smelting furnace, be warming up to 650～700 ℃, put into master alloy more successively through baking, according to the order of Al, Al-Mn and Zn, spread the mixing salt insulating covering agent at the alloy liquid level and carry out melt protecting; When being warming up to 700～750 ℃, add Er or Sm, stir and skim; The refining of alloy liquid; Be cooled to 700～720 ℃, leave standstill, casting, cooling, promptly.
8, a kind of magnesium-aluminum-manganese alloy that contains rare earth according to claim 7 the preparation method, it is characterized in that: the mixing salt insulating covering agent is formed and weight percent is MgCl
250～60, CaF
215～25, CaCl
210～15, BaCl
25～10, KCl 3～5, and NaCl 2～4.
9, a kind of melting and casting process that contains the magnesium-aluminum-manganese alloy of rare earth according to claim 7 is characterized in that: described rare earth Er or Sm add with the form of aluminium erbium master alloy or aluminium samarium master alloy.
10, a kind of melting and casting process that contains the magnesium-aluminum-manganese alloy of rare earth according to claim 7 is characterized in that: use C
2Cl
6Refining agent carries out alloy liquid refining treatment; Adopt Ar
2The protection casting; Cooling is that mould is adopted the recirculated water cooling.
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| CN102011039A (en) * | 2010-12-28 | 2011-04-13 | 刘爱敏 | Rare earth praseodymium-containing cast magnesium alloy and preparation method thereof |
| CN101921940B (en) * | 2009-06-16 | 2013-03-13 | 富准精密工业(深圳)有限公司 | Magnesium alloy and preparation method thereof |
| CN103131924A (en) * | 2013-03-18 | 2013-06-05 | 重庆大学 | Sm-containing Mg-Al-Zn heat-resisting deformed magnesium alloy |
| CN103421998A (en) * | 2013-07-11 | 2013-12-04 | 孝义市东义镁业有限公司 | Manufacturing technology for rare earth-magnesium alloy |
| CN105648252A (en) * | 2016-02-03 | 2016-06-08 | 重庆大学 | Method for modifying magnesium-aluminum alloy by using gas |
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| CN103421998A (en) * | 2013-07-11 | 2013-12-04 | 孝义市东义镁业有限公司 | Manufacturing technology for rare earth-magnesium alloy |
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| CN106917021B (en) * | 2017-03-02 | 2018-10-16 | 东北大学 | High-plastic heat-resisting AZ systems high-alumina magnesium alloy squeeze wood of one kind and preparation method thereof |
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| CN117387378B (en) * | 2023-12-12 | 2024-04-16 | 陕西煜成和汇金属材料有限公司 | Slag skimming device of electron beam melting furnace |
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