CN101519744A - Magnesium-manganese master alloy prepared by powder metallurgy method and preparation method thereof - Google Patents
Magnesium-manganese master alloy prepared by powder metallurgy method and preparation method thereof Download PDFInfo
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- CN101519744A CN101519744A CN200910103600A CN200910103600A CN101519744A CN 101519744 A CN101519744 A CN 101519744A CN 200910103600 A CN200910103600 A CN 200910103600A CN 200910103600 A CN200910103600 A CN 200910103600A CN 101519744 A CN101519744 A CN 101519744A
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Abstract
The invention relates to a magnesium-manganese master alloy prepared by a powder metallurgy method and a preparation method thereof. The alloy comprises 10 percent to 30 percent of metal manganese power and the balance of metal magnesium power by the weight percentage. Pure manganese powder and pure magnesium powder are uniformly mixed by mechanically stirring to be pressed into blanks in a steel die at normal temperature, and then, the magnesium-manganese master alloy is obtained. The magnesium-manganese master alloy can be used for preparing different alloys, and the magnesium-manganese master alloy can be used for melting novel magnesium alloy products with good corrosion resistance and weldability. The invention has the advantages of simple production technique, simplicity and easy obtainment of raw materials, no need of special equipment, low production cost and industrial production at a large scale.
Description
Technical field
The present invention relates to a kind of magnesium-manganese master alloy of high manganese content, is to adopt the manganese content of powder metallurgy process preparation at 10-30% (wt) specifically, can be used for the metallic substance and the preparation method of melting ordinary magnesium alloy and high anti-corrosion high welding performance magnesium alloy.
Technical background
Magnesium alloy is a structured material the lightest in the practical application, and its density has only 2/3 of aluminium, 1/5 of steel.Its specific tenacity, specific rigidity all can reach or be better than steel and aluminium alloy.Magnesium alloy also has characteristics such as good thermal conductivity, electromagnetic wave shielding, freedom from vibration; Magnesium alloy is to the environment nontoxic pollution-free, and the cost of recycling is low; And magnesium reserves are extremely abundant on earth, account for 2.7% of earth crustal mass, the mass content of magnesium reaches 0.13% in the seawater.Therefore magnesium alloy is regarded as the following novel material that substitutes traditional metal materials, and more and more is subjected to the attention of countries in the world.China is the abundantest country of magnesium resource in the world, also is the producing country and the export State of magnesium and magnesium alloy maximum, and the development research of magnesium alloy has special significance to China.Common magnesium alloy is mainly Mg-Al system, Mg-Zn system, Mg-Mn system, Mg-Ca system, Mg-Si system, Mg-RE system etc. at present.
The magnesium Mn series alloy belongs to wrought magnesium alloys, and good corrosion stability and weldability are arranged, and particularly seawater corrosion resistance speed reduces greatly, has been widely used in aircraft skin, wallboard and internals, die forging complex component, oil piping system tubing against corrosion etc.U.S. M1A contains manganese 1.2% at present, and the MB1 of China contains manganese 1.3～2.5%, and MB8 contains manganese 1.5～2.5%.Because manganiferous magnesium alloy has good punching press, extruding and rolling technology performance, and stress corrosion inclination is little, higher mechanical property (tensile strength 250MPa, unit elongation 18%) and high-temperature behavior (250 ℃ of following tensile strength 120MPa) are arranged, so extremely people like after the distortion.But magnesium, manganese fusing point differ huge (1244 ℃ and 649 ℃), and under 652 ℃ of peritectic temperatures, the solubleness of manganese only is 3.3%, and along with temperature descends, solid solubility reduces, so the magnesium manganese master alloy of the high manganese content of preparation is difficult.The development of high-strength deforming magnesium alloy and corrosion-resistant magnesium alloy needs to develop the magnesium manganese master alloy of high manganese content urgently on the market, studies its fabricating technology and final alloy structure, Effect on Performance rule day are shown important.
Summary of the invention
The purpose of this invention is to provide a kind of magnesium-manganese master alloy and preparation method who adopts the powder metallurgy process preparation.The magnesium-manganese master alloy is used for adding manganese element to alloy in the smelting process of magnesium alloy, changes the manganese content of magnesium alloy.
Master alloy of the present invention is the magnesium-manganese master alloy of high manganese content, can be used for the manufacturing of ordinary magnesium alloy, also can be used for having high anti-corrosion, the manufacturing of the novel magnesium alloy of high weldability.
Technical scheme of the present invention is:
The magnesium-manganese master alloy of high manganese content, described alloy is made up of manganese, magnesium, and its each constituent mass percentage composition is
Manganese: 10-30% (wt); All the other are magnesium.
Wherein, manganese and magnesium are even with metal-powder mode mechanically mixing; Adjust the ratio of manganese powder and magnesium powder according to magnesium-manganese master alloy ratio requirement.
Manganese content is 99% manganese powder, and Mg content is 99% metal magnesium powder, all adopts commercially available conventional products.
Prepare the method for the magnesium-manganese master alloy of high manganese content, following steps arranged:
A. manganese powder and magnesium powder are screened by 100 orders and 220 purpose screen clothes respectively, leave and take particle diameter is used for the magnesium-manganese master alloy greater than 100 purpose magnesium powder at 100-220 purpose manganese powder and particle diameter preparation.
B. getting the manganese powder and the magnesium powder of steps A gained, is 10-30% (wt) according to manganese; Magnesium is the weight ratio of 70-90% (wt), puts into agitator and mixes, and stirs 3-5 minute with mechanical system.After mixing powder is placed punching block, adopt the type of being pressed into that adds of conventional preparation briquet at normal temperatures, promptly get described magnesium-manganese master alloy.
The above-mentioned powder that mixes, short grained manganese powder particle can be evenly distributed in the solid briquet that the magnesium of larger particles is matrix behind the pressed compact.Under the normal temperature, migration or segregation can not take place in manganese, have guaranteed the homogeneity of magnesium-manganese master alloy.
The invention has the beneficial effects as follows:
1. broken through the interior manganese content of existing magnesium-manganese master alloy and be no more than 3.3% the limit, manganese content can reach 10%-30%.The method for adjusting compositions of master alloy is simple, and the blending ratio that only need change manganese powder and magnesium powder gets final product.
2. during with the magnesium-manganese master alloy melting ordinary magnesium alloy among the present invention, the usage quantity of master alloy is 1/3-1/10, has improved the service efficiency of master alloy in the past.And, melting manganese content provides material guarantee for surpassing 3% the good magnesium alloy of novel corrosion resistant, welding property.
3. the present invention finds a new outlet for the deep development utilization of China's manganese resource.
Production technique of the present invention is simple, and starting material are simple and easy to, and do not need special equipment, but the advantage of the low large-scale industrial production of production cost is arranged.
Embodiment
Get manganese powder and screen by 100 purpose screen clothes earlier, the powder by screen cloth screens with 220 purpose screen clothes again, gets the powder of staying on 220 eye mesh screens; Get metal magnesium powder and screen, get the powder of staying on 100 eye mesh screens by 100 purpose screen clothes; Gained manganese powder and magnesium powder are used as preparation magnesium-manganese master alloy.
Is 10-30% (wt) with above-mentioned manganese powder and magnesium powder according to manganese; Magnesium is that the weight ratio proportioning of 70-90% (wt) is put into agitator.For preventing powder because of the layering of density difference, put into the little magnesium powder of density earlier, splash into a spot of machine oil to increase powder bonded, put into manganese powder again.Mechanical stirring 3-5 minute, even until two kinds of powder mixes.The powder that mixes is placed the punching block of internal diameter 15mm, and the punching block material is a GCr15 die steel, the heating down of 860 degree, and oil quenching is handled.Apply 22KN pressure with pressing machine under the normal temperature, compression speed 4mm/min, pressurize 1min obtains Φ 15mm, highly is the cylindrical briquet of 6-8mm.
Embodiment 1
Get magnesium powder 36 grams, manganese powder 4 grams are made high manganese content magnesium-manganese master alloy briquet according to the method described above.According to the composition proportion of AZ91C trade mark magnesium alloy, get pure MAG block 240 grams, fine aluminium piece 23.4 grams, pure zinc granule 1.9 grams, master alloy 4 grams and place magnesia crucible.Logical Ar gas shiled in the vacuum electromagnetic induction furnace is melted under 660 ℃-680 ℃ and stirring made it even in 2-3 minute, cuts off the electricity supply, and makes magnesium alloy liquid cooled and solidified in stove, takes out crucible and obtains magnesium alloy.Use energy spectrometer that the gained magnesium alloy ingot is analyzed, wherein contain aluminium 8.78wt%, contain manganese 0.13wt%, contain zinc 0.68wt%, surplus is a magnesium, and meeting the trade mark is AZ91C magnesium alloy ingredient standard.
Embodiment 2
Get magnesium powder 47 grams, manganese powder 20 grams are made high manganese content magnesium-manganese master alloy briquet according to the method described above.According to the composition proportion of AZ91C trade mark magnesium alloy, get pure MAG block 205 grams, fine aluminium piece 20 grams, pure zinc granule 1.6 grams, master alloy 1 gram and place magnesia crucible.Logical Ar gas shiled in the vacuum electromagnetic induction furnace is melted under 660 ℃-680 ℃ and stirring made it even in 2-3 minute, cuts off the electricity supply, and makes magnesium alloy liquid cooled and solidified in stove, takes out crucible and obtains magnesium alloy.Use energy spectrometer that the gained magnesium alloy ingot is analyzed, wherein contain aluminium 8.72wt%, contain manganese 0.12wt%, contain zinc 0.66wt%, surplus is a magnesium, and meeting the trade mark is AZ91C magnesium alloy ingredient standard.
Embodiment 3
Get magnesium powder 36 grams, manganese powder 4 grams are made high manganese content magnesium manganese master alloy briquet according to the method described above.According to the composition proportion of M1A trade mark magnesium alloy, get pure MAG block 295 grams, master alloy 40 grams place magnesia crucible.Logical Ar gas shiled in the vacuum electromagnetic induction furnace is melted under 660 ℃-680 ℃ and stirring made it even in 2-3 minute, cuts off the electricity supply, and makes magnesium alloy liquid cooled and solidified in stove, takes out crucible and obtains magnesium alloy.Use energy spectrometer that the gained magnesium alloy ingot is analyzed, wherein contain manganese 1.23wt%, surplus is a magnesium, and meeting the trade mark is M1A magnesium alloy ingredient standard.
Embodiment 4
Get magnesium powder 47 grams, manganese powder 20 grams are made high manganese content magnesium manganese master alloy briquet according to the method described above.According to the composition proportion of M1A trade mark magnesium alloy, get pure MAG block 240 grams, master alloy 10 grams place magnesia crucible.Logical Ar gas shiled in the vacuum electromagnetic induction furnace is melted under 660 ℃-680 ℃ and stirring made it even in 2-3 minute, cuts off the electricity supply, and makes magnesium alloy liquid cooled and solidified in stove, takes out crucible and obtains magnesium alloy.Use energy spectrometer that the gained magnesium alloy ingot is analyzed, wherein contain manganese 1.18wt%, surplus is a magnesium, and meeting the trade mark is M1A magnesium alloy ingredient standard.
Embodiment 5
Get magnesium powder 36 grams, manganese powder 4 grams are made high manganese content magnesium manganese master alloy briquet according to the method described above.According to the composition proportion of ZM21 trade mark magnesium alloy, get pure MAG block 186 grams, pure zinc granule 4 grams, master alloy 10 grams and place magnesia crucible.Logical Ar gas shiled in the vacuum electromagnetic induction furnace is melted under 660 ℃-680 ℃ and stirring made it even in 2-3 minute, cuts off the electricity supply, and makes magnesium alloy liquid cooled and solidified in stove, takes out crucible and obtains magnesium alloy.Use energy spectrometer that the gained magnesium alloy ingot is analyzed, wherein contain manganese 0.53wt%, contain zinc 2.08wt%, surplus is a magnesium, and meeting the trade mark is ZM21 magnesium alloy ingredient standard.
Embodiment 6
Get magnesium powder 47 grams, manganese powder 20 grams are made high manganese content magnesium manganese master alloy briquet according to the method described above.According to the composition proportion of ZM21 trade mark magnesium alloy, get pure MAG block 290 grams, pure zinc granule 6 grams, master alloy 5 grams and place magnesia crucible.Logical Ar gas shiled in the vacuum electromagnetic induction furnace is melted under 660 ℃-680 ℃ and stirring made it even in 2-3 minute, cuts off the electricity supply, and makes magnesium alloy liquid cooled and solidified in stove, takes out crucible and obtains magnesium alloy.Use energy spectrometer that the gained magnesium alloy ingot is analyzed, wherein contain manganese 0.51wt%, contain zinc 2.06wt%, surplus is a magnesium, and meeting the trade mark is ZM21 magnesium alloy ingredient standard.
Conclusion:
According to the described method of patent of the present invention, can make Mn content is the high manganese content magnesium-manganese master alloy of 10-30% (wt).This method is simple to operate, and the raw material of use and equipment are the common product in market, has with low costly, is fit to the characteristics of large-scale industrial production.
Claims (2)
1. magnesium-manganese master alloy that adopts powder metallurgy process preparation is characterized in that described alloy is made up of manganese metal powder, MAGNESIUM METAL powder, and its each composition weight percentage composition is
Manganese: 10-30%;
All the other are magnesium.
2. the method for preparing right 1 described magnesium-manganese master alloy is characterized in that following steps are arranged:
A. manganese powder and magnesium powder are screened by 100 orders and 220 purpose screen clothes respectively, leave and take particle diameter is used for the magnesium-manganese master alloy greater than 100 purpose magnesium powder at 100-220 purpose manganese powder, particle diameter preparation;
B. get the manganese powder and the magnesium powder of steps A gained, put into agitator according to the described weight ratio mixing of claim 1, powder mixes was even in mechanical stirring 3-5 minute to two kinds, mixed powder is put into punching block, use the conventional method compression moulding for preparing briquet at normal temperatures, obtain the magnesium-manganese master alloy of the high manganese content of moulding.
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105002409A (en) * | 2015-07-17 | 2015-10-28 | 济南大学 | Mg-Mn intermediate alloy and preparation method thereof |
| CN105296784A (en) * | 2015-12-10 | 2016-02-03 | 重庆润际远东新材料科技有限公司 | Magnesium-manganese additive for magnesium alloy |
| CN105331839A (en) * | 2015-12-10 | 2016-02-17 | 重庆润际远东新材料科技有限公司 | Mn-Mg additive for alloy |
| CN105385865A (en) * | 2015-12-10 | 2016-03-09 | 重庆润际远东新材料科技有限公司 | Preparation method for manganese magnesium alloy additive |
| CN105400981A (en) * | 2015-12-10 | 2016-03-16 | 重庆润际远东新材料科技有限公司 | Manganese-magnesium alloy additive |
| WO2016179734A1 (en) * | 2015-05-12 | 2016-11-17 | 苏州列治埃盟新材料技术转移有限公司 | Magnesium-aluminum-silicon carbide intermediate alloy material and preparation method therefor |
| CN107326202A (en) * | 2017-07-10 | 2017-11-07 | 周云锋 | A kind of high Mn content magnesium manganese intermediate alloy preparation method and alloy product |
| CN108754200A (en) * | 2018-08-28 | 2018-11-06 | 马林生 | A kind of nickel molybdenum intermediate alloy preparation process |
-
2009
- 2009-04-14 CN CN200910103600A patent/CN101519744A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2016179734A1 (en) * | 2015-05-12 | 2016-11-17 | 苏州列治埃盟新材料技术转移有限公司 | Magnesium-aluminum-silicon carbide intermediate alloy material and preparation method therefor |
| CN105002409A (en) * | 2015-07-17 | 2015-10-28 | 济南大学 | Mg-Mn intermediate alloy and preparation method thereof |
| CN105002409B (en) * | 2015-07-17 | 2017-12-12 | 济南大学 | A kind of Mg Mn intermediate alloys and preparation method thereof |
| CN105296784A (en) * | 2015-12-10 | 2016-02-03 | 重庆润际远东新材料科技有限公司 | Magnesium-manganese additive for magnesium alloy |
| CN105331839A (en) * | 2015-12-10 | 2016-02-17 | 重庆润际远东新材料科技有限公司 | Mn-Mg additive for alloy |
| CN105385865A (en) * | 2015-12-10 | 2016-03-09 | 重庆润际远东新材料科技有限公司 | Preparation method for manganese magnesium alloy additive |
| CN105400981A (en) * | 2015-12-10 | 2016-03-16 | 重庆润际远东新材料科技有限公司 | Manganese-magnesium alloy additive |
| CN107326202A (en) * | 2017-07-10 | 2017-11-07 | 周云锋 | A kind of high Mn content magnesium manganese intermediate alloy preparation method and alloy product |
| CN107326202B (en) * | 2017-07-10 | 2019-04-05 | 周云锋 | A kind of high Mn content magnesium manganese intermediate alloy preparation method and alloy product |
| CN108754200A (en) * | 2018-08-28 | 2018-11-06 | 马林生 | A kind of nickel molybdenum intermediate alloy preparation process |
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