CN110241344A - A kind of magnalium silicon metal and preparation method thereof - Google Patents
A kind of magnalium silicon metal and preparation method thereof Download PDFInfo
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- CN110241344A CN110241344A CN201910691893.1A CN201910691893A CN110241344A CN 110241344 A CN110241344 A CN 110241344A CN 201910691893 A CN201910691893 A CN 201910691893A CN 110241344 A CN110241344 A CN 110241344A
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/02—Making non-ferrous alloys by melting
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C23/00—Alloys based on magnesium
- C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
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Abstract
A kind of magnalium silicon metal and preparation method thereof, the alloy by weight percentage, at being grouped as are as follows: aluminium: 0-9.5%, silicon: 0.5-1.5%, lead: 0.1-1.5%, surplus are magnesium and inevitable impurity.The preparation method of the magnalium silicon metal, comprising the following steps: (1) weigh aluminium ingot, silicon grain, lead pig and MAG block；(2) it preheats；(3) magnesium ingot is melted to form magnesium liquid；(4) aluminium ingot and silicon grain are added in magnesium liquid, obtain melt；(5) lead pig is added in melt, stirs 5-10min, then keeps the temperature 10-15min at 730-750 DEG C；(6) skimming and protective gas protection under casting the alloy is made.Present invention process is simple, easy to operate, easy to accomplish；Prepared casting magnalium silicon metal mechanical property with higher.
Description
Technical field
The present invention relates to a kind of magnalium silicon metals and preparation method thereof, belong to technical field of metal material.
Background technique
The advantages that magnesium alloy specific strength with higher, specific stiffness, dimensional stability, good damping property and easy processing,
It is known as " 21 century green engineering structural metallic materials ", is had broad application prospects in fields such as automobile, Aeronautics and Astronautics.
Mg-Al-Si system is heat resistance magnesium alloy, such as AS41, AS21, has good high temperature creep property, is mainly used in car engine
The components of machine.Main hardening constituent is Mg in Mg-Al-Si alloy17Al12Phase and Mg2Si phase, Mg17Al12Fusing point there was only 437
DEG C, hardness and thermal stability are lower；And Mg2Si fusing point is up to 1085 DEG C, and density is close with magnesium matrix, and elasticity modulus is also very high,
It is a kind of excellent High-Temperature Strengthening phase, however, when magnesium alloy containing Si is using cooling velocity slower sand casting preparation, Mg2Si
Mutually easily it is roughened, forms coarse Chinese character shape Mg2Si phase substantially reduces the mechanical property of material.Therefore, researcher uses
The technologies such as quick solidification, mechanical alloying, hot extrusion refinement magnesium alloy containing Si, although can to a certain extent thinning microstructure,
Performance is improved, but complicates process, leads to increased costs.
Summary of the invention
The object of the present invention is to provide a kind of magnalium silicon lead for some problems existing for Mg-Al-Si heat resistance magnesium alloy
Alloy and preparation method thereof.
The technical solution that the present invention realizes is as follows, changes Mg by way of adding different content Pb element2The pattern of Si,
Size and distribution, so as to improve the mechanical property of cast magnesium alloy.
A kind of magnalium silicon metal, the alloy by weight percentage, are made of following element: aluminium: 0-9.5%, silicon:
0.5-1.5%, lead: 0.1-1.5%, surplus are magnesium and inevitable impurity.
A kind of preparation method of magnalium silicon metal, comprising the following steps:
It (1) according to the aluminium of weight percent 0-9.5%, the silicon of 0.5-1.5%, the lead of 0.1-1.5%, surplus is magnesium and inevitable
Impurity, weigh aluminium ingot, silicon grain, lead pig and magnesium ingot；
(2) aluminium ingot, silicon grain, lead pig and magnesium ingot are placed in drying box, in 160-210 DEG C of preheating 10-15min；
(3) magnesium ingot after preheating is put into the ceramic crucible that temperature is 290-330 DEG C, then is filled with protective gas into crucible,
It is warming up to 690-710 DEG C, magnesium ingot is made to melt to form magnesium liquid；
(4) by after preheating aluminium ingot and silicon grain be added in the magnesium liquid of previous step acquisition, and in 690-710 DEG C of heat preservation 10-
15min obtains melt；
(5) lead pig is added in the melt of previous step acquisition, stirs 5-10min, then keeps the temperature 10- at 730-750 DEG C
15min；
(6) keep the temperature after, skimming and protective gas protection under casting the alloy is made.
The CO that the protective gas is 99.5% by volume fraction2The SF for being 0.5% with volume fraction6Composition.
Before the lead pig is added, lead pig should be wrapped with aluminum foil, the fusing point of lead is lower, to reduce its heat waste.Lead
Addition can in refining alloy Mg2Si phase size, keep its distribution more uniform, so as to improve the performance of alloy.
The invention has the advantages that the present invention is formed in situ in magnesium alloy fused mass by adding suitable element silicon
High, wear-resisting, high-temperature stability the is good Mg of fusing point2Si；The present invention changes Mg by adding lead element mode2The pattern of Si phase, size
And distribution, keep its distribution more uniform, so as to improve the performance of alloy, prepares high performance cast magnesium alloy.Work of the present invention
Skill is simple, easy to operate, easy to accomplish.
Specific embodiment
Embodiment 1
The present embodiment provides a kind of Mg-Al-Si-Pb alloys, and by weight percentage, alloy composition includes: aluminium 2%, silicon 1%, lead
0.2%, surplus is Mg and inevitable impurity.
The present embodiment Mg-Al-Si-Pb alloy the preparation method is as follows:
(1) according to above-mentioned weight percent, aluminium ingot, silicon grain, lead pig and magnesium ingot are weighed；
(2) aluminium ingot, silicon grain, lead pig and magnesium ingot are placed in drying box, in 160 DEG C of preheating 15min；
(3) magnesium ingot after preheating is put into the ceramic crucible that temperature is 290 DEG C, then is filled with protective gas into crucible, heated up
To 690 DEG C, magnesium ingot is made to melt to form magnesium liquid；The CO that protective gas is 99.5% by volume fraction2The SF for being 0.5% with volume fraction6
Composition；
(4) by after preheating aluminium ingot and silicon grain be added in magnesium liquid obtained in step (3), and in 690 DEG C of heat preservation 15min, obtain
Obtain melt；
(5) lead pig is added in melt, stirs 10min, then keeps the temperature 15min at 730 DEG C；The fusing point of lead is lower, Xiang Rong
It needs to be wrapped with aluminium foil when adding in body, reduces heat waste；
(6) by step (5) heat preservation after, skimming and protective gas protection under casting the alloy, protective gas is made
The CO for being 99.5% by volume fraction2The SF for being 0.5% with volume fraction6Composition.
Embodiment 2
The present embodiment provides a kind of Mg-Al-Si-Pb alloys, and by weight percentage, alloy composition includes: aluminium 4%, silicon 1%, lead
0.5%, surplus is Mg and inevitable impurity.
The present embodiment Mg-Al-Si-Pb alloy the preparation method is as follows:
(1) according to above-mentioned weight percent, aluminium ingot, silicon grain, lead pig and magnesium ingot are weighed；
(2) aluminium ingot, silicon grain, lead pig and magnesium ingot are placed in drying box, in 190 DEG C of preheating 10min；
(3) magnesium ingot after preheating is put into the ceramic crucible that temperature is 300 DEG C, then is filled with protective gas into crucible, heated up
To 700 DEG C, magnesium ingot is made to melt to form magnesium liquid, the CO that protective gas is 99.5% by volume fraction2The SF for being 0.5% with volume fraction6
Composition；
(4) by after preheating aluminium ingot and silicon grain be added in magnesium liquid obtained in step (3), and in 700 DEG C of heat preservation 12min, obtain
Obtain melt；
(5) lead pig is added in melt, stirs 8min, then keeps the temperature 12min at 740 DEG C；The fusing point of lead is lower, to melt
It needs to be wrapped with aluminium foil when middle addition, reduces heat waste；
(6) by step (5) heat preservation after, skimming and protective gas protection under casting the alloy, protective gas is made
The CO for being 99.5% by volume fraction2The SF for being 0.5% with volume fraction6Composition.
Embodiment 3
The present embodiment provides a kind of Mg-Al-Si-Pb alloys, and by weight percentage, alloy composition includes: aluminium 4%, silicon 2%, lead
0.5%, surplus is Mg and inevitable impurity.
The present embodiment Mg-Al-Si-Pb alloy the preparation method is as follows:
(1) according to above-mentioned weight percent, aluminium ingot, silicon grain, lead pig and magnesium ingot are weighed；
(2) aluminium ingot, silicon grain, lead pig and magnesium ingot are placed in drying box, in 210 DEG C of preheating 5min；
(3) magnesium ingot after preheating is put into the ceramic crucible that temperature is 320 DEG C, then is filled with protective gas (by body into crucible
The CO that fraction is 99.5%2The SF for being 0.5% with volume fraction6Composition), 710 DEG C are warming up to, magnesium ingot is made to melt to form magnesium liquid, is protected
Protect the CO that gas is 99.5% by volume fraction2The SF for being 0.5% with volume fraction6Composition；
(4) by after preheating aluminium ingot and silicon grain be added in magnesium liquid obtained in step (3), and in 710 DEG C of heat preservation 10min, obtain
Obtain melt；
(5) lead pig is added in melt, stirs 5min, then keeps the temperature 10min at 750 DEG C；The fusing point of lead is lower, to melt
It needs to be wrapped with aluminium foil when middle addition, reduces heat waste；
(6) by step (5) heat preservation after, skimming and protective gas protection under casting the alloy, protective gas is made
The CO for being 99.5% by volume fraction2The SF for being 0.5% with volume fraction6Composition.
Claims (4)
1. a kind of magnalium silicon metal, which is characterized in that the alloy by weight percentage, is made of following element: aluminium: 0-
9.5%, silicon: 0.5-1.5%, lead: 0.1-1.5%, surplus are magnesium and inevitable impurity.
2. a kind of method for being used to prepare magnalium silicon metal as described in claim 1, which is characterized in that the method step
It is as follows,
It (1) according to the aluminium of weight percent 0-9.5%, the silicon of 0.5-1.5%, the lead of 0.1-1.5%, surplus is magnesium and inevitable
Impurity, weigh aluminium ingot, silicon grain, lead pig and magnesium ingot；
(2) aluminium ingot, silicon grain, lead pig and magnesium ingot are placed in drying box, in 160-210 DEG C of preheating 10-15min；
(3) magnesium ingot after preheating is put into the ceramic crucible that temperature is 290-330 DEG C, then is filled with protective gas into crucible,
It is warming up to 690-710 DEG C, magnesium ingot is made to melt to form magnesium liquid；
(4) by after preheating aluminium ingot and silicon grain be added in the magnesium liquid of previous step acquisition, and in 690-710 DEG C of heat preservation 10-
15min obtains melt；
(5) lead pig is added in the melt of previous step acquisition, stirs 5-10min, then keeps the temperature 10- at 730-750 DEG C
15min；
(6) keep the temperature after, skimming and protective gas protection under casting the alloy is made.
3. the method according to claim 2 for preparing magnalium silicon metal, which is characterized in that the protective gas is by volume
The CO that score is 99.5%2The SF for being 0.5% with volume fraction6Composition.
4. the method according to claim 2 for preparing magnalium silicon metal, which is characterized in that before the lead pig is added, answer
Lead pig is wrapped with aluminum foil, reduces heat waste.
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11509581A (en) * | 1996-04-25 | 1999-08-24 | ヒュンダイ モーター カンパニー | Magnesium alloy for high pressure casting and method for producing the same |
| CN1565062A (en) * | 2001-09-06 | 2005-01-12 | 迈克尔·C·尼古拉欧 | Method for producing a device for direct thermoelectric energy conversion |
| CN101392342A (en) * | 2008-11-05 | 2009-03-25 | 南京信息工程大学 | Strength and toughness magnesium alloy and preparation method thereof |
| CN101476071A (en) * | 2009-01-21 | 2009-07-08 | 南京信息工程大学 | Magnesium-aluminum alloy and manufacturing method thereof |
| CN101956110A (en) * | 2010-10-19 | 2011-01-26 | 武汉理工大学 | Method for preparing Mg2BIV-based thermoelectric material by low-temperature solid-phase reaction |
| CN105420649A (en) * | 2015-12-28 | 2016-03-23 | 重庆大学 | Method for improving medium-temperature mechanical property of Mg-Al series magnesium alloy pressure castings |
| CN105695825A (en) * | 2016-02-05 | 2016-06-22 | 辽宁工业大学 | Mg-Al-Zn-Si-Bi alloy and preparation method thereof |
-
2019
- 2019-07-30 CN CN201910691893.1A patent/CN110241344A/en active Pending
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH11509581A (en) * | 1996-04-25 | 1999-08-24 | ヒュンダイ モーター カンパニー | Magnesium alloy for high pressure casting and method for producing the same |
| CN1565062A (en) * | 2001-09-06 | 2005-01-12 | 迈克尔·C·尼古拉欧 | Method for producing a device for direct thermoelectric energy conversion |
| CN101392342A (en) * | 2008-11-05 | 2009-03-25 | 南京信息工程大学 | Strength and toughness magnesium alloy and preparation method thereof |
| CN101476071A (en) * | 2009-01-21 | 2009-07-08 | 南京信息工程大学 | Magnesium-aluminum alloy and manufacturing method thereof |
| CN101956110A (en) * | 2010-10-19 | 2011-01-26 | 武汉理工大学 | Method for preparing Mg2BIV-based thermoelectric material by low-temperature solid-phase reaction |
| CN105420649A (en) * | 2015-12-28 | 2016-03-23 | 重庆大学 | Method for improving medium-temperature mechanical property of Mg-Al series magnesium alloy pressure castings |
| CN105695825A (en) * | 2016-02-05 | 2016-06-22 | 辽宁工业大学 | Mg-Al-Zn-Si-Bi alloy and preparation method thereof |
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