CN1851021A - Magnesium-aluminium alloy material - Google Patents

Magnesium-aluminium alloy material Download PDF

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Publication number
CN1851021A
CN1851021A CNA2005100343676A CN200510034367A CN1851021A CN 1851021 A CN1851021 A CN 1851021A CN A2005100343676 A CNA2005100343676 A CN A2005100343676A CN 200510034367 A CN200510034367 A CN 200510034367A CN 1851021 A CN1851021 A CN 1851021A
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CN
China
Prior art keywords
magnesium
aluminium alloy
alloy material
content
aluminium
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Pending
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CNA2005100343676A
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Chinese (zh)
Inventor
陈杰良
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
Original Assignee
Hongfujin Precision Industry Shenzhen Co Ltd
Hon Hai Precision Industry Co Ltd
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Publication date
Application filed by Hongfujin Precision Industry Shenzhen Co Ltd, Hon Hai Precision Industry Co Ltd filed Critical Hongfujin Precision Industry Shenzhen Co Ltd
Priority to CNA2005100343676A priority Critical patent/CN1851021A/en
Priority to US11/308,400 priority patent/US20070000577A1/en
Publication of CN1851021A publication Critical patent/CN1851021A/en
Pending legal-status Critical Current

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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
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C49/00—Alloys containing metallic or non-metallic fibres or filaments
    • C22C49/02—Alloys containing metallic or non-metallic fibres or filaments characterised by the matrix material
    • C22C49/04—Light metals

Abstract

The invention provides the alloy of the magnalium; it includes the 0.1%-10% content of the nanometer carbon material by the weight percent. In the magnalium alloy material, the content of the aluminium is 5%-20% by the weight percent. The magnesium material also includes the 5% content of the Sr by the weight percent.

Description

Magnesium-aluminium alloy material
[technical field]
The present invention relates to a kind of magnesium-aluminium alloy material, relate in particular to a kind of magnesium-aluminium alloy material of anti-the creep.
[background technology]
Magnesium-aluminium alloy material since have light weight, hard, metallicity is excellent, diamagnetic, corrosion resistance is strong, and performance such as good damping performance, resistance to pressure, cold property and good thermal diffusivity and gaining great popularity.In recent years, magnalium is good because of its regenerability, and recovery technology environmental protection, pollution-free and be referred to as " environmentally friendly machine " by the insider.
The proportion of magnesium alloy only is 1.8, for copper 1/4th, aluminium 2/3rds, similar to plastic cement.The die casting performance that its wall ratio plastic cement is thinner, good in addition, corrosion resistance, advantages such as damping property and anti-electromagnetic wave jamming performance, therefore, its development potentiality is just actively promoted in the world.Be widely used at present digital video camcorder, mini dish walkman (Mini Disk walkman, MD), notebook computer, personal digital assistant (Personal Digital Assistant, PDA), electronic product and automobile component such as mobile telephone.
Magnesium alloy is a structural metallic materials the lightest in the industrial application, but the obdurability of magnesium alloy is also lower in the prior art, the intensity of general magnesium alloy only prepares 50%～70% of aluminium alloy for same process, and the gap between its toughness and plasticity and aluminium alloy is bigger, creep easily takes place, and this has limited the Application of Magnesium scope.
Creep is meant under certain stress, the phenomenon that distortion is slowly carried out in time.When magnesium-aluminium alloy material was subjected to the following stress long duration of action of elastic limit at normal temperatures, its structure generally can not change; But when being subjected to the stress below the elastic limit under hot environment, material can prolong in time and deform gradually, and creep promptly takes place.The rate of creep of magnesium-aluminium alloy material is the function of time, temperature, raises and the time prolongation with temperature, and it is big that the magnesium-aluminium alloy material rate of creep will become.The magnalium of anti-the creep, generally being meant can be in environment more than 150 ℃, the magnalium of the too big creep of still unlikely generation.
Because magnesium is the close-packed hexagonal metal, the crystal boundary slippage is few, under the normal temperature viscous deformation poor, cause its toughness and anti-creep poor.Grain refining is more effective than the effect of body-centered and face-centered cubic metal to the effect that improves alloy mechanical property, and therefore, refined crystalline strengthening is one of main method that improves magnesium alloy obdurability and anti-creep.On the other hand, the existence of aluminium can provide better intensity, hardness and castability, yet second in the Mg-Al base magnesium alloy commonly used is the thick Mg that is distributed in crystal boundary mutually 17Al 12Phase has reduced the obdurability and the anti-creep of alloy, and therefore, the kenel and the distribution that improve this second phase are the another important method that improves the magnalium performance.
In view of this, provide a kind of magnesium-aluminium alloy material of fracture propagation, anti-creep that stops real for essential.
[summary of the invention]
Below, will a kind of magnesium-aluminium alloy material that can stop fracture propagation, anti-creep be described with some embodiment.
This magnesium-aluminium alloy material by weight percentage, comprises that content is 0.1%～10% nano carbon material.
Further, this magnesium-aluminium alloy material comprises that content is 5%～20% aluminium by weight percentage.
Again further, this magnesium-aluminium alloy material comprises that content is the strontium below 5% by weight percentage.
Compared to prior art, in the magnesium-aluminium alloy material of the present invention, the existence of aluminium can provide better intensity, hardness and castability.Because of nano carbon material has high Young's modulus, the nano carbon material with reduced size makes grain refining, thereby makes this magnesium-aluminium alloy material have high fracture toughness property, can obtain anti-preferably creep performance, stops fracture propagation, improves mechanical characteristics.And, in magnesium-aluminium alloy material, add a small amount of strontium and can form fine structure, can prevent effectively that magnesium-aluminium alloy material is subjected to external factor to influence the crackle of generation, improves its anti-creep performance.
[embodiment]
In the magnesium-aluminium alloy material of the technical program, comprise nano carbon material, its content is 0.1%～10%, preferred 0.5%～2%.This nano carbon material comprises carbon nanotube, Nano carbon balls, carbon nano wire etc.Its size of particles is 5nm～500nm, is preferably 20nm～200nm.
In this magnesium-aluminium alloy material, also can contain strontium (Sr), its content is below 5%, preferred 1%～2%.The particle diameter of Sr is big than nano carbon material, is 20nm～500nm, preferred 100nm～300nm.
Nano carbon material has high Young's modulus (Young ' s Modulus), is similar to diamond, can stop creep and any fine crack; Simultaneously, it has good electrical conductivity again, when being used for electric consumers, can more effectively prevent electromagnetic interference (ElectroMagnetic Interference, EMI).Nano carbon material is a kind of good thermal conductor, and its thermal conductivity k is 6, and 000W/mK is 30 times of aluminium, 20 times of copper, and adamantine 2 times, so perfect heat-dissipating, be beneficial to the heat radiation of magnesium-aluminium alloy material, can be used for the shell of notebook computer or other computer.
For metal alloy and plastic cement, fracture toughness property (Fracture Toughness) K 1cBe one of its main mechanical parameter, it is the fracture toughness property for plane strain, has reflected that material stops the ability of crack propagation.The fracture toughness property value is high more, and the mechanical property of this alloy or plastic cement is good more.Its relational expression is as follows:
K 1 c ~ σ y · ( 3.14159 c d ) 0.5
Wherein, σ yBe yield strength (Yield Strength) that promptly the limit of recoverable deformation also claims yield-point, c is a crack length, also claims inefficacy length, and d is a grain diameter.Drawn by this formula, d is more little for grain diameter, fracture toughness property K 1cBig more.Because nano carbon material has higher Young's modulus, so its yield strength σ yHeight, so the particle of nano-grade size makes fracture toughness property increase.Because of nano carbon material or strontium particle all have the smaller particles particle diameter, make this magnesium alloy have high fracture toughness property, can stop fracture propagation, prevent the distortion of magnesium alloy creep, improve mechanical characteristics.
Strontium is widely used in metallurgy, chemical industry, electron phototube.Generally speaking, add a small amount of Sr in the magnesium-aluminium alloy material and can form fine structure, can prevent effectively that magnesium-aluminium alloy material is subjected to external factor to influence the crackle of generation, improves its anti-creep performance.When Sr content in magnesium-aluminium alloy material was 1wt%～2wt%, effect was best.
Further, in this magnesium-aluminium alloy material, the content of aluminium (Al) is 5%～20%, preferred 8%～10% by weight percentage.
The existence of aluminium can provide better intensity, hardness and castability.Yet, in Mg-Al base alloy, often form thick Mg at crystal boundary 17Al 12Phase, this has reduced intensity and the plasticity and the anti-creep of alloy.In this case embodiment, in the magnesium-aluminium alloy material that contains 5wt%～20wt% aluminium, introduce the nano carbon material and the strontium particle of nano-scale, can make the Mg that separates out 17Al 12The grain refining of phase, thus make this magnesium-aluminium alloy material obtain anti-preferably creep performance.
First embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, comprise in this magnesium-aluminium alloy material that content is 5% carbon nanotube.
Second embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, carbon nano wire content is 0.1%, and aluminium content is 5%, and all the other are magnesium and unavoidable impurities.
The 3rd embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, Nano carbon balls content is 10%, and aluminium content is 20%, and all the other are magnesium and unavoidable impurities.
The 4th embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, content of carbon nanotubes is 0.1%, and the strontium particle content is 1%, and aluminium content is 10%, and all the other are magnesium and unavoidable impurities.
The 5th embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, Nano carbon balls content is 10%, and the strontium particle content is 2%, and aluminium content is 8%, and all the other are magnesium and unavoidable impurities.
The 6th embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, content of carbon nanotubes is 0.5%, and the strontium particle content is 1%, and aluminium content is 10%, and all the other are magnesium and unavoidable impurities.
The 7th embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, carbon nano wire content is 2%, and the strontium particle content is 5%, and aluminium content is 9%, and all the other are magnesium and unavoidable impurities.
The 8th embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, Nano carbon balls content is 0.5%, and the strontium particle content is 1%, and aluminium content is 5%, and all the other are magnesium and unavoidable impurities.
The 9th embodiment of magnesium-aluminium alloy material of the present invention is: by weight percentage, content of carbon nanotubes is 5%, and the strontium particle content is 2%, and aluminium content is 20%, and all the other are magnesium and unavoidable impurities.
In the above-mentioned magnesium-aluminium alloy material, the existence of aluminium can provide better intensity, hardness and castability.Nano carbon material and nano level strontium particle all have the smaller particles size, can make grain refining, thereby make this magnesium-aluminium alloy material have high fracture toughness property, can obtain anti-preferably creep performance, stop fracture propagation, improve mechanical characteristics.
Magnesium-aluminium alloy material of the present invention can be applicable to the products such as shell, nameplate and other magnesium alloy appearance component of electric equipment products such as mobile phone spare, computer cabinet, PDA, DVD, digital camera.

Claims (9)

1. a magnesium-aluminium alloy material is characterized in that: by weight percentage, comprise that content is 0.1%～10% nano carbon material.
2. magnesium-aluminium alloy material as claimed in claim 1 is characterized in that: by weight percentage, the content of nano carbon material is 0.5%～2%.
3. magnesium-aluminium alloy material as claimed in claim 1 is characterized in that: this nano carbon material can be carbon nanotube, Nano carbon balls or carbon nano wire.
4. magnesium-aluminium alloy material as claimed in claim 1 is characterized in that: by weight percentage, can comprise that also content is the strontium below 5%.
5. magnesium-aluminium alloy material as claimed in claim 4 is characterized in that: by weight percentage, the content of strontium is 1%～2%.
6. magnesium-aluminium alloy material as claimed in claim 1 is characterized in that: the particle diameter of strontium is 20nm～500nm.
7. magnesium-aluminium alloy material as claimed in claim 6 is characterized in that: the particle diameter of strontium is 100nm～300nm.
8. magnesium-aluminium alloy material as claimed in claim 1 is characterized in that: by weight percentage, comprise that content is 5%～20% aluminium.
9. magnesium-aluminium alloy material as claimed in claim 8 is characterized in that: by weight percentage, the content of aluminium is 8%～10%.
CNA2005100343676A 2005-04-22 2005-04-22 Magnesium-aluminium alloy material Pending CN1851021A (en)

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CNA2005100343676A CN1851021A (en) 2005-04-22 2005-04-22 Magnesium-aluminium alloy material
US11/308,400 US20070000577A1 (en) 2005-04-22 2006-03-21 Creep resistant magnesium alloy

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Cited By (7)

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Publication number Priority date Publication date Assignee Title
CN101435059B (en) * 2007-11-16 2012-05-30 清华大学 Method for preparing magnesium base-carbon nanotube composite material
CN102851557A (en) * 2011-06-30 2013-01-02 鸿富锦精密工业（深圳）有限公司 Graphene-doped magnesium alloy and magnesium alloy member
CN105231837A (en) * 2015-09-18 2016-01-13 宁波市鄞州唯达汽车配件厂（普通合伙） Improved baking tray
CN106011568A (en) * 2016-06-27 2016-10-12 山东建筑大学 Preparation method for magnesium nitride-carbon nano tube particle reinforced magnesium base alloy material
CN107699762A (en) * 2017-11-06 2018-02-16 安徽金兰压铸有限公司 A kind of magnesium alloy and preparation method thereof
CN107904430A (en) * 2017-11-22 2018-04-13 上海紫燕合金应用科技有限公司 The preparation method of the magnesium alloy structural part of single-walled carbon nanotube doping
CN110643846A (en) * 2019-11-07 2020-01-03 苏州第一元素纳米技术有限公司 Preparation method of carbon nano tube reinforced magnesium alloy

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FR2935989A1 (en) * 2008-09-16 2010-03-19 Arkema France Preparing a masterbatch based on multi-walled carbon nanotubes, comprises contacting the nanotubes with a metal compound having a fusion point of specified value, and mechanically treating the obtained mixture
CN103789837A (en) * 2014-01-16 2014-05-14 燕山大学 High-toughness anti-corrosion magnesium alloy anti-radiation nano whisker
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CN114901200A (en) 2019-12-31 2022-08-12 奥瑞斯健康公司 Advanced basket drive mode

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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN101435059B (en) * 2007-11-16 2012-05-30 清华大学 Method for preparing magnesium base-carbon nanotube composite material
CN102851557A (en) * 2011-06-30 2013-01-02 鸿富锦精密工业（深圳）有限公司 Graphene-doped magnesium alloy and magnesium alloy member
CN105231837A (en) * 2015-09-18 2016-01-13 宁波市鄞州唯达汽车配件厂（普通合伙） Improved baking tray
CN106011568A (en) * 2016-06-27 2016-10-12 山东建筑大学 Preparation method for magnesium nitride-carbon nano tube particle reinforced magnesium base alloy material
CN106011568B (en) * 2016-06-27 2018-02-06 山东建筑大学 A kind of preparation method of magnesium nitride carbon nanotube particulate enhancing magnesium base alloy material
CN107699762A (en) * 2017-11-06 2018-02-16 安徽金兰压铸有限公司 A kind of magnesium alloy and preparation method thereof
CN107904430A (en) * 2017-11-22 2018-04-13 上海紫燕合金应用科技有限公司 The preparation method of the magnesium alloy structural part of single-walled carbon nanotube doping
CN110643846A (en) * 2019-11-07 2020-01-03 苏州第一元素纳米技术有限公司 Preparation method of carbon nano tube reinforced magnesium alloy

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