CN102400021A - Formula for improving fluidity of magnesium alloy - Google Patents
Formula for improving fluidity of magnesium alloy Download PDFInfo
- Publication number
- CN102400021A CN102400021A CN2010102756566A CN201010275656A CN102400021A CN 102400021 A CN102400021 A CN 102400021A CN 2010102756566 A CN2010102756566 A CN 2010102756566A CN 201010275656 A CN201010275656 A CN 201010275656A CN 102400021 A CN102400021 A CN 102400021A
- Authority
- CN
- China
- Prior art keywords
- magnesiumalloy
- prescription
- mobile
- az91d
- raising
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
- 229910000861 Mg alloy Inorganic materials 0.000 title claims abstract description 32
- 239000011777 magnesium Substances 0.000 claims abstract description 14
- 239000011572 manganese Substances 0.000 claims abstract description 14
- 229910052712 strontium Inorganic materials 0.000 claims abstract description 9
- CIOAGBVUUVVLOB-UHFFFAOYSA-N strontium atom Chemical compound [Sr] CIOAGBVUUVVLOB-UHFFFAOYSA-N 0.000 claims abstract description 9
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims abstract description 8
- 229910052782 aluminium Inorganic materials 0.000 claims abstract description 8
- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 claims abstract description 7
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052790 beryllium Inorganic materials 0.000 claims abstract description 7
- ATBAMAFKBVZNFJ-UHFFFAOYSA-N beryllium atom Chemical compound [Be] ATBAMAFKBVZNFJ-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052749 magnesium Inorganic materials 0.000 claims abstract description 7
- 229910052748 manganese Inorganic materials 0.000 claims abstract description 7
- JBQYATWDVHIOAR-UHFFFAOYSA-N tellanylidenegermanium Chemical compound [Te]=[Ge] JBQYATWDVHIOAR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 239000004411 aluminium Substances 0.000 claims description 7
- 239000012535 impurity Substances 0.000 claims description 6
- 229910052684 Cerium Inorganic materials 0.000 claims description 4
- 229910001122 Mischmetal Inorganic materials 0.000 claims description 4
- GWXLDORMOJMVQZ-UHFFFAOYSA-N cerium Chemical compound [Ce] GWXLDORMOJMVQZ-UHFFFAOYSA-N 0.000 claims description 4
- 239000000203 mixture Substances 0.000 claims description 4
- 238000004512 die casting Methods 0.000 abstract description 2
- 238000003723 Smelting Methods 0.000 description 16
- 229910045601 alloy Inorganic materials 0.000 description 14
- 239000000956 alloy Substances 0.000 description 14
- 235000014347 soups Nutrition 0.000 description 9
- 238000005266 casting Methods 0.000 description 6
- 230000004907 flux Effects 0.000 description 6
- 238000007670 refining Methods 0.000 description 6
- 230000000694 effects Effects 0.000 description 4
- 238000004519 manufacturing process Methods 0.000 description 4
- 239000000463 material Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000007872 degassing Methods 0.000 description 2
- 238000010907 mechanical stirring Methods 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000002994 raw material Substances 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 1
- 238000003754 machining Methods 0.000 description 1
- 238000011084 recovery Methods 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
Landscapes
- Manufacture And Refinement Of Metals (AREA)
Abstract
A formula for improving the fluidity of magnesium alloy comprises the following components in parts by weight: 9.5 to 10.5% of aluminum , 0.5 to 1.0% of zinc (Zn), 0.1 to 0.5% of manganese (Mn), 0.0005 to 0.0015% of beryllium (Be), 0.01 to 0.15% of strontium (Sr), and the balance of magnesium (Mg). The formula improves the fluidity of the magnesium alloy and the yield of die-casting products.
Description
[technical field]
The invention relates to a kind of magnesium alloy formula, particularly can effectively improve the mobile prescription of AZ91D magnesiumalloy relevant for a kind of.
[background technology]
Magnesiumalloy is widely used on the casing of notebook computer owing to have lightweight, outstanding die casting and machining property, electromagnetic wave shielding and be easy to advantage such as recovery.Though the magnesiumalloy trade mark AZ91D of main flow can satisfy the die cast requirement of most of workpiece, along with the more and more frivolous requirement of notebook computer, AZ91D also runs into increasing challenge.For example, more thin-walled (≤when 0.8mm) workpiece was with the AZ91D moulding, yield declined to a great extent, and ordered about the high workability magnesiumalloy of research staff's development of new, under the prerequisite that does not reduce the AZ91D mechanical property, further improved its mobile and moulding filling capacity.In the high workability magnesiumalloy patent of China and foreign countries applications, compare AZ91D commonly used, the mechanical property that has descends too much, and the cost that has is too high, does not all have a practical value, is necessary that therefore further exploitation has more the high workability magnesiumalloy of industrial application potentiality.
For example, U.S. Patent number is mobile excellent magnesiumalloy and material thereof described in the patent of US 6582533, improves flowability through the content that improves aluminium and silicon, and the alloy unit elongation descends a lot, satisfied not the requirement of notebook product to plasticity; On AZ91D alloy basis, to have added Ca/Sr/ mishmetal etc. element modified for the patent of ZL 200610025394 for Chinese patent number, and wherein the element addition of embodiment is too much, has significantly improved the manufacturing cost of these alloys.
[summary of the invention]
In view of this; The purpose of this invention is to provide a kind of mobile prescription of magnesiumalloy that improves; To be implemented under the prerequisite that does not reduce magnesiumalloy mechanical property and manufacturing cost raising; The flowability of AZ91D magnesiumalloy has been improved >=20%, with respect to the AZ91D alloy make the yield of die-cast product improved >=50%.
In order to achieve the above object, the prescription that raising magnesiumalloy of the present invention is mobile, its composition fraction representation by weight comprises:
Aluminium (Al) 9.5~10.5%
Zinc (Zn) 0.5~1.0%
Manganese (Mn) 0.1~0.5%
Beryllium (Be) 0.0005~0.0015%
Strontium (Sr) 0.01~0.15%
Magnesium (Mg) surplus.
In the preferred embodiment, the mobile prescription of above-mentioned raising magnesiumalloy also comprises: mishmetal (RE) 0.01~0.2%.
Compared to prior art; The prescription that raising magnesiumalloy of the present invention is mobile; Compared to existing AZ91D alloy; Under the prerequisite that does not reduce magnesiumalloy mechanical property and manufacturing cost raising≤10%, the flowability of AZ91D magnesiumalloy has been improved>=20%, the yield of die-cast product has been improved>=50%.
[embodiment]
Further specify the present invention through embodiment below.
Embodiment 1
The prescription parts by weights array of magnesiumalloy of the present invention becomes to comprise:
Aluminium (Al) 10.2%
Zinc (Zn) 0.6%
Manganese (Mn) 0.28%
Strontium (Sr) 0.12%
Beryllium (Be) 0.0008%
Magnesium (Mg) surplus.
Wherein, Also comprise a small amount of unavoidable impurities, as: individual event foreign matter content≤0.025%, content of impurities≤0.05%; Simultaneously; Strontium (Sr) is the surface active element of magnesiumalloy, thereby has the molten soup viscosity of reduction to improve the mobile effect of molten soup, and strontium (Sr) also has the effect of grain refining and raising plasticity.
Above-mentioned formula materials adopts QR2-150 type smelting furnace to carry out refinery process, raw material is fed in 750 ℃ the smelting furnace, and transferring to temperature of smelting furnace after the fusing is 730 ℃ (needing 120 minutes approximately), on one side the molten soup of mechanical stirring, add flux on one side and carry out refining (needing 20 minutes approximately); Under 760 ℃ of the temperature of smelting furnace, through feeding N
2Gas, and add flux, this flux is the RJ-2 flux among the aircraft industry standard HB/Z5123-79, carries out degasification refining (needing 30 minutes approximately); Smelting furnace is cut off the power supply, molten soup is lowered the temperature leave standstill, 760 ℃~610 ℃ of control temperature of smelting furnace need 120 minutes approximately; When alloy is cooled to 720 ℃, get the molten soup mobile sample of casting; After completion was left standstill in above-mentioned cooling, 610 ℃~710 ℃ of control temperature of smelting furnace needed 30 minutes approximately; 710 ℃ of control temperature of smelting furnace carry out the casting of ingot casting, need 80 minutes approximately; Produce product, the above-mentioned product of producing is carried out flowability and measuring mechanical property, test result such as table 1, table 2 are said:
Table 1. embodiment 1 contrasts with the flowability of AZ91D alloy
Alloy species | Mobile specimen length (cm) | Relative AZ91D increase rate |
AZ91D | 66 | 0.0% |
Present embodiment 1 | 80.2 | 21.5% |
Table 2. embodiment 1 contrasts with the mechanical property of AZ91D alloy
Embodiment 2
The prescription parts by weights array of magnesiumalloy of the present invention becomes to comprise:
Aluminium (Al) 9.8%
Zinc (Zn) 0.7%
Manganese (Mn) 0.32%
Strontium (Sr) 0.01%
Cerium-rich mischmetal (RE) 0.15%
Beryllium (Be) 0.0009%
Magnesium (Mg) surplus.
Wherein, also comprise a small amount of unavoidable impurities, as: individual event foreign matter content≤0.025%, content of impurities≤0.05%.Cerium-rich mischmetal (RE) is the surface active element of magnesiumalloy, have to reduce molten soup viscosity and help the stream effect, and cerium-rich mischmetal (RE) has modifying-refining and the effect that improves plasticity.
Above-mentioned formula materials adopts QR2-150 type smelting furnace to carry out refinery process, raw material is fed in 750 ℃ the smelting furnace, and transferring to temperature of smelting furnace after the fusing is 730 ℃ (needing 120 minutes approximately), on one side the molten soup of mechanical stirring, add flux on one side and carry out refining (needing 20 minutes approximately); Under 760 ℃ of the temperature of smelting furnace, through feeding N
2Gas, and add flux, carry out degasification refining (needing 30 minutes approximately); Smelting furnace is cut off the power supply, molten soup is lowered the temperature leave standstill, 760 ℃~610 ℃ of control temperature of smelting furnace need 120 minutes approximately; When alloy is cooled to 720 ℃, get the molten soup mobile sample of casting; After completion was left standstill in above-mentioned cooling, 610 ℃~710 ℃ of control temperature of smelting furnace needed 30 minutes approximately; 710 ℃ of control temperature of smelting furnace carry out the casting of ingot casting, need 80 minutes approximately; Produce product, the above-mentioned product of producing is carried out flowability and measuring mechanical property, test result such as table 3, table 4 are said:
Table 3. embodiment 2 contrasts with the flowability of AZ91D alloy
Alloy species | Mobile specimen length (cm) | Relative AZ91D increase rate |
AZ91D | 66 | 0.0% |
Present embodiment 2 | 79.8 | 20.9% |
Table 4. embodiment 2 contrasts with the mechanical property of AZ91D alloy
Compared to prior art; The prescription that raising magnesiumalloy of the present invention is mobile; Compared to existing AZ91D alloy; Under the prerequisite that does not reduce magnesiumalloy mechanical property and manufacturing cost raising≤10%, the flowability of AZ91D magnesiumalloy has been improved>=20%, the yield of die-cast product has been improved>=50%.
Claims (5)
1. one kind is improved the mobile prescription of magnesiumalloy, it is characterized in that its composition fraction representation by weight comprises:
Aluminium (Al) 9.5~10.5%
Zinc (Zn) 0.5~1.0%
Manganese (Mn) 0.1~0.5%
Beryllium (Be) 0.0005~0.0015%
Strontium (Sr) 0.01~0.15%
Magnesium (Mg) surplus.
2. the prescription that raising magnesiumalloy as claimed in claim 1 is mobile is characterized in that, also comprises a small amount of unavoidable impurities, as: individual event foreign matter content≤0.025%, content of impurities≤0.05%.
3. the prescription that raising magnesiumalloy as claimed in claim 1 is mobile is characterized in that in the preferred embodiment, the composition of this prescription fraction representation by weight comprises:
Aluminium (Al) 10.2%
Zinc (Zn) 0.6%
Manganese (Mn) 0.28%
Strontium (Sr) 0.12%
Beryllium (Be) 0.0008%
Magnesium (Mg) surplus.
4. the prescription that raising magnesiumalloy as claimed in claim 1 is mobile, it is characterized in that this prescription also comprises: mishmetal (RE), its weight fraction are 0.01~0.2%.
5. the prescription that raising magnesiumalloy as claimed in claim 4 is mobile is characterized in that in the preferred embodiment, the composition of this prescription fraction representation by weight comprises:
Aluminium (Al) 9.8%
Zinc (Zn) 0.7%
Manganese (Mn) 0.32%
Strontium (Sr) 0.01%
Cerium-rich mischmetal (RE) 0.15%
Beryllium (Be) 0.0009%
Magnesium (Mg) surplus.
Priority Applications (1)
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CN2010102756566A CN102400021A (en) | 2010-09-08 | 2010-09-08 | Formula for improving fluidity of magnesium alloy |
Applications Claiming Priority (1)
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CN2010102756566A CN102400021A (en) | 2010-09-08 | 2010-09-08 | Formula for improving fluidity of magnesium alloy |
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Publication Number | Publication Date |
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CN102400021A true CN102400021A (en) | 2012-04-04 |
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Family Applications (1)
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CN2010102756566A Pending CN102400021A (en) | 2010-09-08 | 2010-09-08 | Formula for improving fluidity of magnesium alloy |
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105220048A (en) * | 2015-11-03 | 2016-01-06 | 苏州云海镁业有限公司 | A kind of high workability magnesium alloy and production technique thereof |
Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN1266105A (en) * | 2000-03-29 | 2000-09-13 | 上海交通大学 | Heat-resistant flame-retarded compression casting magnesium alloy and smelting cast technology thereof |
US6139651A (en) * | 1998-08-06 | 2000-10-31 | Dead Sea Magnesium Ltd | Magnesium alloy for high temperature applications |
US20010026768A1 (en) * | 2000-03-03 | 2001-10-04 | Tadayoshi Tukeda | Magnesium alloys excellent in fluidity and materials thereof |
-
2010
- 2010-09-08 CN CN2010102756566A patent/CN102400021A/en active Pending
Patent Citations (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US6139651A (en) * | 1998-08-06 | 2000-10-31 | Dead Sea Magnesium Ltd | Magnesium alloy for high temperature applications |
US20010026768A1 (en) * | 2000-03-03 | 2001-10-04 | Tadayoshi Tukeda | Magnesium alloys excellent in fluidity and materials thereof |
CN1266105A (en) * | 2000-03-29 | 2000-09-13 | 上海交通大学 | Heat-resistant flame-retarded compression casting magnesium alloy and smelting cast technology thereof |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN105220048A (en) * | 2015-11-03 | 2016-01-06 | 苏州云海镁业有限公司 | A kind of high workability magnesium alloy and production technique thereof |
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Application publication date: 20120404 |