CN104278179A - Si-intensified Mg-Sn casting magnesium alloy material - Google Patents

Si-intensified Mg-Sn casting magnesium alloy material Download PDF

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Publication number
CN104278179A
CN104278179A CN201310677100.3A CN201310677100A CN104278179A CN 104278179 A CN104278179 A CN 104278179A CN 201310677100 A CN201310677100 A CN 201310677100A CN 104278179 A CN104278179 A CN 104278179A
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China
Prior art keywords
alloy
magnesium
magnesium alloys
magnesium alloy
cast magnesium
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CN201310677100.3A
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Chinese (zh)
Inventor
耿浩然
吴明
王庆磊
刘鹏
冷金凤
贾鹏
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University of Jinan
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University of Jinan
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Priority to CN201310677100.3A priority Critical patent/CN104278179A/en
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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
    • 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
    • C22C1/03—Making non-ferrous alloys by melting using master alloys
    • 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
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture And Refinement Of Metals (AREA)

Abstract

The invention relates to a Si-intensified Mg-Sn casting magnesium alloy material. The Si-intensified Mg-Sn casting magnesium alloy comprises the following components in percentage by weight (wt%): 5.0%-8.0% of Sn, 1.0%-2.8% of Si, 0.1%-1.2% of Al, 0.004%-0.05% of P and the balance of magnesium and inevitable impurities, wherein Al and P are added in an Al-P intermediate alloy mode, and Si is added in an Si-Mg intermediate alloy mode. The optimal alloy components are as follows in percentage by weight: 5.5% of Sn, 1.25% of Si, 0.25% of Al, 0.01% of P and the balance of magnesium. Compared with the traditional Mg-Sn-Si magnesium alloy, the prepared magnesium alloy is obviously enhanced on a comprehensive property aspect, reduced in Mg2Si size from original 30-50 micrometers to 8-20 micrometers, achieves the brinell hardness at 57-70 HB, the tensile strength at 170-200 MPa and the elongation rate by 4.0%-5.2% and is enhanced in abrasion resistance. A preparation process has the advantages of relatively lower smelting temperature of alloy liquid, less P loss, low alloy liquid oxidation, easiness for component control, low manufacturing cost and alloy quality enhancement.

Description

The Mg-Sn cast magnesium alloys that a kind of Si strengthens
Technical field
The present invention relates to the Mg-Sn casting magnesium alloy material that a kind of Si strengthens, belong to class of metal materials field.
Background technology
China's magnesium resource enriches, and domestic magnesium output occupies first place in the world.Magnesium alloy has high specific strength and rigidity, damping performance and excellent cutting performance, has magnetic shield performance, returnability, magnesium alloy is industrially obtained in recent years and applies more and more widely.Wherein, in the component such as automobile, 3C, be applied as emphasis with magnesium alloy again, meet automobile, the light-weighted requirement of 3C industry.Because the component such as automobile, 3C need to have higher-strength, rigidity and comparatively high-ductility, and require wear-resisting, corrosion-resistant, surface smoothness is good, can use under comparatively rugged environment condition, so magnesium alloy is used for as structured material the focus that the industry such as automobile, 3C is research application always.At present, the over-all properties of cast magnesium alloys needs to be improved further, especially strength and stiffness aspect.
Summary of the invention
The present invention is directed to current Mg-Sn series magnesium alloy intensity and wear resistance situation on the low side, provide the technology of preparing of the Mg-Sn magnesium alloy that a kind of Si strengthens.Si is general with Mg in the magnesium alloy 2si phase form exists, and exists in thicker Chinese character shape.This compares firmly, and can play strengthening phase must act on, and improves intensity and the wear resistance of material.But because this compares crisp, size is thicker, embrittling effect is produced to matrix.The present invention, on the basis of Mg-Sn-Si series magnesium alloy, adds a certain amount of P by suitable technique, carries out modifying-refining process, make Mg to containing Si phase 2si phase becomes tiny and granulating mutually by original thick Chinese character shape, and is evenly distributed, thus improves the performances such as the mechanics of alloy.
The magnesium alloy that the present invention obtains is compared with traditional Mg-Sn-Si magnesium alloy, and over-all properties aspect is improved significantly, Mg 2si size is tiny of 8 ~ 20um by 30 original ~ 50um, and the Brinell hardness of alloy can reach 57 ~ 70HB, and tensile strength can reach 170MPa ~ 200MPa, and elongation can reach 4.0% ~ 5.2%, and wear resistance increases.Adopt the preparation technology invented, aluminium alloy smelting temperature is relatively low, and the loss of P is few, and aluminium alloy oxidation is light, and composition is easy to control, and low cost of manufacture, improves alloy quality.
Feature of the present invention is:
By adding in a certain amount of P to Mg-Sn-Si magnesium alloy, a part of P exists with solid solution state, and another part P then exists with the form of AlP.Due to the existence of P and AlP, make the Mg of Chinese character shape 2si phase growth pattern there occurs change, promotes Mg 2si in opposite directions particulate state changes.With the form of Al-P master alloy, volatile P constituent element is joined among Mg-Sn-Si magnesium alloy, the AlP compound particle of generation can discrete distribution in magnesium melt, form a large amount of heterogeneous nucleis, Mg 2si primary phase is grown up using Al compound as forming core core, and therefore, Al-P master alloy serves modifying-refining Mg 2the effect of Si phase.Adopt this technique interpolation P can improve the absorption of P, reduce P loss, prevent the environmental pollution added pure P and cause, ensure that the requirement of alloying constituent.By the modifying-refining effect of P, under the prerequisite not reducing this series magnesium alloy Young's modulus, effective refinement Mg 2si size, improves the performances such as the intensity of alloy, hardness, and Si constituent element adopts the form of Si-Mg master alloy to add, solve and add that the smelting temperature that high-melting-point Si causes is high, the unmanageable problem of composition, smelting time shortens dramatically, and has saved energy consumption, ensure that the component requirements of alloy.
The present invention is realized by following measures:
Si of the present invention strengthens Mg-Sn alloy and is made up of (wt%) the component of following weight proportion: 5.0% ~ 8.0%Sn, 1.0% ~ 2.8%Si, 0.1% ~ 1.2%Al, 0.004% ~ 0.05%P, all the other are magnesium and inevitable impurity.Wherein, Al, P add with the form of Al-P master alloy, and Si adds with the form of Si-Mg master alloy.Best alloying constituent is: 5.5%Sn, 1.25%Si, 0.25%Al, 0.01%P, all the other are magnesium.
The preparation method that Si of the present invention strengthens Mg-Sn magnesium alloy is:
(1) be 5.0% ~ 8.0%Sn, 1.0% ~ 2.5%Si by weight ratio, all the other for magnesium be raw material, Si element joins in alloy with the form of Mg-5%Si master alloy.Iron crucible is preheating to 120 ~ 250 DEG C and puts into raw material, heat fused is also warming up to 720 DEG C ~ 770 DEG C, treats that alloy furnace charge melts completely, leaves standstill 10 ~ 30 minutes; (2) when melt temperature reaches 720 ~ 770 DEG C, add Al, P, P element joins in alloy with the form of Al-3.5 %P master alloy.After stirring, treat that master alloy melts completely and aluminium alloy is adjusted to 710 DEG C ~ 760 DEG C, leave standstill after 10 ~ 30 minutes, be cast in solidification forming in the swage tool of preheating, obtained Mg-Sn-Si magnesium alloy.SF is passed in fusion process 6: CO 2volume ratio is the protection against oxidation that the mixed gas of 1:200 carries out aluminium alloy.
four, embodiment
embodiment 1
The composition weight proportion (wt%) of invention embodiment material is: 5.0%Sn, 1.0%Si, 0.1%Al, 0.004%P, and all the other are magnesium and inevitable impurity.Following steps are taked to obtain:
(1) carry out alloying constituent proportioning by above weight, put into the raw materials such as Sn ingot, Mg-5.3%Si alloy pig, magnesium ingot after iron crucible being preheating to 220 DEG C, heat fused is also warming up to 750 DEG C, treats that alloy melts completely, leaves standstill 20 minutes; (2) when melt temperature reaches 740 DEG C, add Al-3.5%P alloy pig, after stirring, treat that master alloy melts completely, aluminium alloy pours into a mould solidification forming in swage tool after leaving standstill 15 minutes at 735 DEG C, obtained Mg-Sn-Si magnesium alloy.SF is passed in fusion process 6: CO 2volume ratio is the gas shield of 1:200, and gained alloy property is in table 1.
embodiment 2
The composition weight proportion (wt%) of invention embodiment material is: 5.0%Sn, 1.0%Si, 1.0%Al, 0.04%P, and all the other are magnesium and inevitable impurity.Following steps are taked to obtain:
(1) carry out alloying constituent proportioning by above weight, put into the raw materials such as Sn ingot, Mg-5.3%Si alloy pig, magnesium ingot after iron crucible being preheating to 220 DEG C, heat fused is also warming up to 750 DEG C, treats that alloy melts completely, leaves standstill 30 minutes; (2) when melt temperature reaches 740 DEG C, add Al-3.5%P alloy pig, after stirring, treat that master alloy melts completely, aluminium alloy pours into a mould solidification forming in swage tool after leaving standstill 20 minutes at 735 DEG C, obtained Mg-Sn-Si magnesium alloy.SF is passed in fusion process 6: CO 2volume ratio is the gas shield of 1:200, and gained alloy property is in table 1.
embodiment 3
The composition weight proportion (wt%) of invention embodiment material is: 5.5%Sn, 1.25%Si, 0.25%Al, 0.01%P, and all the other are magnesium and inevitable impurity.Following steps are taked to obtain:
(1) carry out alloying constituent proportioning by above weight, put into the raw materials such as Sn ingot, Mg-5.3%Si alloy pig, magnesium ingot after iron crucible being preheating to 220 DEG C, heat fused is also warming up to 755 DEG C, treats that alloy melts completely, leaves standstill 15 minutes; (2) when melt temperature reaches 745 DEG C, add Al-3.5%P alloy pig, after stirring, treat that master alloy melts completely, aluminium alloy pours into a mould solidification forming in swage tool after leaving standstill 20 minutes at 740 DEG C, obtained Mg-Sn-Si magnesium alloy.SF is passed in fusion process 6: CO 2volume ratio is the gas shield of 1:200, and gained alloy property is in table 1.
embodiment 4
The composition weight proportion (wt%) of invention embodiment material is: 8.0%Sn, 2.5%Si, 0.1%Al, 0.004%P, and all the other are magnesium and inevitable impurity.Following steps are taked to obtain:
(1) carry out alloying constituent proportioning by above weight, put into the raw materials such as Sn ingot, Mg-5.3%Si alloy pig, magnesium ingot after iron crucible being preheating to 220 DEG C, heat fused is also warming up to 750 DEG C, treats that alloy melts completely, leaves standstill 15 minutes; (2) when melt temperature reaches 745 DEG C, add Al-3.5%P alloy pig, after stirring, treat that master alloy melts completely, aluminium alloy pours into a mould solidification forming in swage tool after leaving standstill 20 minutes at 740 DEG C, obtained Mg-Sn-Si magnesium alloy.SF is passed in fusion process 6: CO 2volume ratio is the gas shield of 1:200, and gained alloy property is in table 1.
embodiment 5
The composition weight proportion (wt%) of invention embodiment material is: 8.0%Sn, 2.5%Si, 1.0%Al, 0.04%P, and all the other are magnesium and inevitable impurity.Following steps are taked to obtain:
(1) carry out alloying constituent proportioning by above weight, put into the raw materials such as Sn ingot, Mg-5.3%Si alloy pig, magnesium ingot after iron crucible being preheating to 220 DEG C, heat fused is also warming up to 760 DEG C, treats that alloy melts completely, leaves standstill 20 minutes; (2) when melt temperature reaches 750 DEG C, add Al-3.5%P alloy pig, after stirring, treat that master alloy melts completely, aluminium alloy pours into a mould solidification forming in swage tool after leaving standstill 20 minutes at 745 DEG C, obtained Mg-Sn-Si magnesium alloy.SF is passed in fusion process 6: CO 2volume ratio is the gas shield of 1:200, and gained alloy property is in table 1.
Choose the magnesium alloy that do not add Al-P master alloy close to embodiment alloy constituent element as a comparison case, its alloying constituent is (wt%): 5.0%Sn, 1.25%Si, and all the other are magnesium.The mechanical property comparing result of comparative example and embodiment is as shown in table 1.Result shows, compares with comparative example, and clearly, comprehensive mechanical property promotes the grain refining effect of Mg-Sn magnesium alloy of the present invention: Mg 2si grain size is down to 8um by 35um is minimum, reduces 77.1%; The hardness of alloy to 68HB, improves 21.4% by the most promotion of 56HB; Tensile strength the highest raising 45MPa, improves 29%; Elongation % is the highlyest increased to 4.8% by 4.2%, wherein, adopt the composition of embodiment 3 and technique to obtain the mechanical property of material best.
The room-temperature mechanical property of table 1 embodiment of the present invention and comparative example

Claims (5)

1. the present invention relates to the Mg-Sn cast magnesium alloys that a kind of Si strengthens, the Mg-Sn-Si cast magnesium alloys that Si of the present invention strengthens is made up of (wt%) the component of following weight proportion: 5.0% ~ 8.0%Sn, 1.0% ~ 2.5%Si, 0.1% ~ 1.2%Al, 0.004% ~ 0.05%P, all the other are magnesium and inevitable impurity.
2., in Mg-Sn-Si cast magnesium alloys as claimed in claim 1, best alloying constituent is: 5.5%Sn, 1.25%Si, 0.25%Al, 0.01%P, all the other are magnesium.
3., in Mg-Sn-Si cast magnesium alloys as claimed in claim 1, Si adds with the form of Si and Mg master alloy.
4., in Mg-Sn-Si cast magnesium alloys as claimed in claim 1, P adds with the form of Al and P master alloy.
5. the preparation method of Mg-Sn-Si cast magnesium alloys as claimed in claim 1, is characterized in that, step and condition as follows:
(1) being 5.0% ~ 8.0%Sn, 1.0% ~ 2.5%Si by weight ratio, all the other for magnesium be raw material, Si element joins in alloy with the form of Mg-5%Si master alloy, raw material is put at iron crucible being preheating to 120 ~ 250 DEG C, heat and be warming up to 720 DEG C ~ 770 DEG C fusings, treat that alloy melts completely, leave standstill 10 ~ 30 minutes, in fusion process, pass into SF 6: CO 2volume ratio is the gas shield of 1:200; (2) when melt temperature reaches 720 ~ 770 DEG C, add Al-3.5%P master alloy, after stirring, treat that master alloy melts completely and aluminium alloy is adjusted to 710 ~ 760 DEG C, leave standstill and pour into a mould solidification forming in swage tool after 10 ~ 30 minutes, obtained Mg-Sn-Si cast magnesium alloys, passes into SF in fusion process 6: CO 2volume ratio is the protection against oxidation that the mixed gas of 1:200 carries out aluminium alloy.
CN201310677100.3A 2013-12-13 2013-12-13 Si-intensified Mg-Sn casting magnesium alloy material Pending CN104278179A (en)

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104630516A (en) * 2015-01-28 2015-05-20 重庆大学 Method for increasing purity of magnesium alloy by adding manganese
CN107419149A (en) * 2017-04-13 2017-12-01 济南大学 A kind of Mg Sn Si Al P magnesium alloys of Al P intermediate alloys enhancing and preparation method thereof
CN111485151A (en) * 2020-05-21 2020-08-04 温州市星峰新材料有限公司 Corrosion-resistant cast magnesium alloy and manufacturing method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871068A (en) * 2009-04-24 2010-10-27 中国科学院金属研究所 High-strength high-plasticity magnesium alloy comprising tin and aluminium and preparation method thereof
CN101982553A (en) * 2010-09-21 2011-03-02 华南理工大学 Heat resistant magnesium alloy without Al and preparation method thereof
CN102242298A (en) * 2011-07-04 2011-11-16 四川大学 Al and Zn strengthened Mg-Sn-RE-based high-toughness heat-resistant magnesium alloy

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101871068A (en) * 2009-04-24 2010-10-27 中国科学院金属研究所 High-strength high-plasticity magnesium alloy comprising tin and aluminium and preparation method thereof
CN101982553A (en) * 2010-09-21 2011-03-02 华南理工大学 Heat resistant magnesium alloy without Al and preparation method thereof
CN102242298A (en) * 2011-07-04 2011-11-16 四川大学 Al and Zn strengthened Mg-Sn-RE-based high-toughness heat-resistant magnesium alloy

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
刘鹏: "添加元素对AZ91和Mg-5%Sn镁合金显微组织及力学性能的影响", 《中国优秀硕士学位论文全文数据库工程科技Ⅰ辑》 *
赵浩峰等: "《镁钛合金成型加工中的物理冶金及与环境的作用》", 31 December 2008, 北京：中国科学技术出版社 *

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104630516A (en) * 2015-01-28 2015-05-20 重庆大学 Method for increasing purity of magnesium alloy by adding manganese
CN104630516B (en) * 2015-01-28 2016-09-07 重庆大学 A kind of manganese addition improves the method for magnesium alloy purity
CN107419149A (en) * 2017-04-13 2017-12-01 济南大学 A kind of Mg Sn Si Al P magnesium alloys of Al P intermediate alloys enhancing and preparation method thereof
CN111485151A (en) * 2020-05-21 2020-08-04 温州市星峰新材料有限公司 Corrosion-resistant cast magnesium alloy and manufacturing method thereof

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Application publication date: 20150114