CN102230115B - Manganese-base vanadium-containing MnAlV alloy smelted by high-phosphorus manganese ores and smelting method thereof - Google Patents
Manganese-base vanadium-containing MnAlV alloy smelted by high-phosphorus manganese ores and smelting method thereof Download PDFInfo
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Abstract
The invention relates to a manganese-base vanadium-containing MnAlV alloy smelted by high-phosphorus manganese ores and a smelting method thereof. The MnAlV alloy comprises the following chemical components by mass percentage: 30%-50% of Mn, 20%-40% of Al, 10%-20% of Si, 1%-10% of V, not more than 0.08% of P and the balance of Fe and other impurity elements. The needed main raw materials for smelting the alloy comprise the high-phosphorus manganese ores, manganese-enriched residues, coke, blue coke, silica, ferrovanadium, pure aluminum as well as a corresponding dephosphorizing agent and a slag forming constituent. The smelting method comprises the following steps: according to the design requirements for alloy components, firstly weighing the needed raw materials based on per unit weight of alloy; smelting the raw materials into a silicon-manganese alloy mother liquid; dephosphorizing, alloying and casting; and finally cooling to obtain the MnAlV alloy. The manganese-base vanadium-containing MnAlV alloy smelted by the method has high aluminum content, high vanadium content and low phosphorus content; the alloy can be stored under various weather conditions and has a stale structure without chalking; and a crystal structure and a carbide shape of the alloy are improved so as to enhance steel performances such as yield strength, tensile strength, heat resistance and cold workability.
Description
Technical field
The present invention relates to a kind of MnAlV Alloy And Preparation Method that contains vanadium with high-phosphorus manganese smelting manganese base.This alloy can be used for steel liquid deoxidation and the alloyings such as Cryogenic Steel, wear resisting steel, Properties of Heavy Rail Steel By, transition pipeline, automobile steel.
Background technology
Global economy since 2008 continue weak and background that iron ore price rises steadily under, China's steel industry is faced with cost and rises and the multiple pressure such as to slow down with demand, be to guarantee China's steel industry sustained and rapid development, country has proposed industry restructuring, and the measure such as eliminate the backward production facilities, therefore iron and steel enterprise begins to pay attention to low-carbon (LC), less energy-consumption, high added value is produced, and China's Manganese Ore Grade is low simultaneously, and energy consumption is high, under one's control everywhere in the world market, be badly in need of carrying out the industry innovation.
The in recent years fast development of China's chemical industry, oil, track traffic and automobile industry is used for chemical machinery, oil pipeline, and the steel demand in the fields such as rail steel, automobile forged part increases year by year, for the development of Iron and Steel Enterprises in China provides new power.Vanadium can play the effect of crystal grain thinning, precipitation strength, can improve crystalline texture and the carbide morphology of alloy, and yield strength, tensile strength, thermotolerance, the cold-workability of steel are obviously improved.For continuing to optimize the vanadium steel smelting technology, improve vanadium steel production capacity and quality, the scientific worker has invented aluminium vanadium master alloy, be used for molten steel deoxidation, go to be mingled with and alloying.But the aluminium element recovery rate that occurs in the aluminium vanadium master alloy preparation process is low, alloy in storage easily the series of problems such as timeliness efflorescence seriously to restrict the industry of this type of alloy practical.The invention disclosed patent only pays attention to add multiple alloy element mostly in aluminium vanadium master alloy in recent years, aluminium vanadium master alloy such as Chinese patent CN1629332A and CN101195887 announcement, other alloy elements except vanadium have all been added, content of vanadium is up to more than 40%, but these two patents all are as deoxidant element with single aluminium, so just greatly reduce the deoxidation effect of alloy, simultaneously because vanadium also has good deoxidizing capacity, therefore in the deoxygenation process, when aluminium content is low, fail in the molten steel can consume the alloy elements such as vanadium with the Sauerstoffatom of aluminium association reaction, will cause the waste of the precious metals such as vanadium, be unfavorable for efficient utilization of resource.Chinese patent CN1548562A has announced a kind of rare-earth aluminum-manganese ferro-vanadium and preparation method thereof, its aluminium content has arrived 50%～60%, add simultaneously manganese element and rare earth element, manganese and vanadium acting in conjunction can improve the intensity of steel, wear resistance reduces the critical temperature of steel low temperature, also can improve the deoxidizing capacity of single aluminium element, be mingled with easy agglomeration after the deoxidation, the adding of rare earth element is also so that the alloying effect is better; But its main alloy element content of vanadium is less than 5%, and manganese content also is lower than 15%, and the adding of manganese element causes the problem of alloy aging efflorescence also not to be resolved easily; Aluminium content is high, and adding of a large amount of aluminium ingots fashionablely do not considered the appropriate size of aluminium ingot and entered the stove time, will cause the aluminium fusing time long, is in for a long time under the hot environment after the aluminium fusing, causes the serious scaling loss of aluminium, and the recovery rate of aluminium is low.
Therefore, it is high to be badly in need of at present a kind of aluminium content, and content of vanadium is high and be difficult for efflorescence, and the manganese base with stronger steel liquid deoxidation ability, good alloying effect contains the MnAlV alloy of vanadium.
Summary of the invention
Based on the prior art above shortcomings, the object of the invention provide a kind of strong for the steel liquid deoxidation ability, alloying is effective, content of vanadium a kind of manganese base high and that be difficult for efflorescence contains the MnAlV alloy of vanadium.
Another object of the present invention provides a kind of method of utilizing high-phosphorus manganese smelting manganese base to contain the MnAlV alloy of vanadium.
For realizing purpose of the present invention, take following technical scheme:
A kind ofly contain the MnAlV alloy of vanadium with high-phosphorus manganese smelting manganese base, it is characterized in that the quality percentage composition of each chemical ingredients is in the described alloy: Mn30%～50%, Al20%～40%, Si10%～20%, V1%～10%, P≤0.08%, surplus are Fe and other impurity element.
A kind ofly contain the method for the MnAlV alloy of vanadium with high-phosphorus manganese smelting manganese base, it is characterized in that this alloy melting is taked " electric furnace+induction furnace " duplex practice smelting technology, specifically comprises the steps:
Step (one): preparation silicomanganese mother liquor
Each raw material of preparation silicomanganese mother liquor is put into electric furnace, basicity of slag 0.5～1.0,1550 ℃～1650 ℃ of smelting temperatures, make the silicomanganese mother liquor at 180～240 minutes tap to tap time; The quality per distribution ratio of each raw material of described preparation silicomanganese mother liquor is: mix manganese ore 60%-75%, silica 10%～15%, Wingdale 5%～10%, rhombspar 1%～5%, coke+blue charcoal 7%～15%.Described mixing manganese ore is: high-phosphorus manganese 50%～80%, rich manganese slag 20%～50%;
Step (two): induction furnace dephosphorization and alloying
Preparation process:
A: dephosphorization: after the silicomanganese mother liquor slagging-off that step () is obtained, in induction furnace, add the aluminium scrap bits in the dephosphorizing agent, until the aluminium scrap bits after fusing enters aluminium alloy fully; Add other component in the dephosphorizing agent, with alloy mother liquor reaction 5～10 minutes; The consumption of described carbide of calcium, calcium oxide and Calcium Fluoride (Fluorspan) for respectively estimate one's own ability 10%～70%;
B: after steps A is finished, remove the gred, add remaining calcium oxide, Calcium Fluoride (Fluorspan) and carbide of calcium in the dephosphorizing agent, fully react secondary slagging-off after 5～10 minutes;
C: after step B finishes, add successively slag former and vanadium iron, smelting temperature is 1600 ℃～1750 ℃, and smelting time is 10～20 minutes;
D: after step C vanadium iron melts fully, add the fine aluminium piece;
E: the abundant smelting time of fine aluminium piece that adds until step D is after 5～8 minutes, and calm 3 minutes, skim, be poured into copper mold or sand mo(u)ld;
In the raw material of step (two), silicomanganese mother liquor 45%～78%, fine aluminium piece 20%～40%, vanadium iron 2%～15%;
Dephosphorizing agent is 3%～10% of alloy mother liquor, and described dephosphorizing agent comprises aluminium scrap bits, carbide of calcium, calcium oxide and Calcium Fluoride (Fluorspan);
The slag former consumption is 3%～10% of raw material total mass, and described slag former is two or more in calcium oxide, magnesium oxide, silicon oxide and the Calcium Fluoride (Fluorspan) etc.;
Step (three): cooling process
Will be through the alloy natural air cooling to 1300 of step (two) preparation ℃, atomized water spray rapid solidification to 550 ℃～about 600 ℃, then natural coagulation obtains the MnAlV alloy.
Described high-phosphorus manganese chemical ingredients: T
Mn16%～35%, SiO
218%～22%, P/Mn 〉=0.007, surplus are iron and other impurity element;
Described rich manganese dreg chemistry composition: T
Mn35%～46%, SiO
220%～23%, Fe1%～2%, P0.014%～0.020%, S0.1%～1.0%, surplus is Cao, MgO, Al
2O
3And other impurity elements;
Blue charcoal accounts for the 30%-50% in the fuel in described fuel coke+blue charcoal;
Described dephosphorizing agent comprises the aluminium scrap bits, carbide of calcium, and calcium oxide, Calcium Fluoride (Fluorspan), the quality per distribution ratio of each composition is: aluminium scrap bits 5%～12%, carbide of calcium 50%～60%, calcium oxide 20%～25%, Calcium Fluoride (Fluorspan) 5%～25%; Described slag former is two or more in calcium oxide, magnesium oxide, silicon oxide and the Calcium Fluoride (Fluorspan) etc., and the quality per distribution ratio of each composition is: calcium oxide 40%～70%, magnesium oxide 15%～20%, silicon oxide 15%～30%, Calcium Fluoride (Fluorspan) 5%～30%.
Aluminium scrap in described dephosphorizing agent bits need be done after the clean 200 ℃ of dryings 2 hours; Carbide of calcium in described dephosphorizing agent, the slag former, calcium oxide, magnesium oxide, Calcium Fluoride (Fluorspan) granularity≤3mm; Described vanadium iron break process is to granularity≤10mm; Described fine aluminium piece cuts into desired size according to the induction furnace capacity, and the corresponding aluminium block size of different crucible capacity sees Table 1.
Aluminium block reference dimension/mm that table 1 crucible induction furnace capacity is corresponding
Compared with prior art, the present invention has following advantage:
(1) MnAlV alloy of the present invention is that aluminium, content of vanadium are relatively high, and be stronger than conventional alloys deoxidizing capacity take manganese as base, the easy polymerization of deoxidation products eliminatings of growing up, raising removal of impurity.
(2) content of vanadium is high in the MnAlV alloy of the present invention, can improve carbide morphology in the steel, improves steel strength; Vanadium can stop austenite to be grown up, reinforced ferrite, and crystal grain thinning remedies manganese to the impact of steel toughness, improves the mechanical property of steel under low temperature environment.
(3) preparation method of the present invention adds the use of aluminium scrap bits in calcareous dephosphorizing agent, not only can reduce the oxygen position for calcareous dephosphorization under reducing atmosphere provides better reducing atmosphere, puies forward high calcium and phosphorus activity, greatly improves dephosphorization efficient; Can reduce simultaneously the oxidational losses of the elements such as Mn, V, improve the recovery rate of manganese, vanadium.
(4) the inventive method can take full advantage of the heat of silicomanganese mother liquor in preparation MnAlV alloy process, has reduced the secondary energy demand, realizes low electric energy smelting technology.
(5) the inventive method has been taked slow-fast-slow minute temperature section method of cooling in the cooling process step, walks around the alloy pulverization district, thereby has effectively guaranteed recovery rate and the not efflorescence of alloying element;
(6) adopting the high-phosphorus manganese resource in the inventive method is that main raw material prepares the MnAlV alloy, is a kind of new approach that taken full advantage of China's high-phosphorus manganese Resource Supply.
Embodiment
A kind of manganese base contains vanadium MnAlV alloy, and the quality percentage composition of each chemical ingredients sees Table 2 in the described alloy:
The quality percentage composition of each each chemical ingredients of embodiment interalloy of table 2
| Mn | Al | Si | V | P | Surplus is Fe and impurity | |
| Embodiment 1 | 42.0％ | 30.8％ | 11.0％ | 6.7％ | 0.08％ | Surplus is Fe and impurity |
| Embodiment 2 | 45.0％ | 25.0％ | 14.0％ | 7.0％ | 0.07％ | Surplus is Fe and impurity |
| Embodiment 3 | 50.0％ | 20.0％ | 20.0％ | 1.0％ | 0.08％ | Surplus is Fe and impurity |
| Embodiment 4 | 30.0％ | 40.0％ | 10.0％ | 10.0％ | 0.07％ | Surplus is Fe and impurity |
Above-described embodiment manganese base contains the smelting process of vanadium MnAlV alloy, utilizes high-phosphorus manganese to adopt electric furnace and induction furnace duplex practice smelting technology.Comprise step () preparation silicomanganese mother liquor, step (two) induction furnace dephosphorization and alloying and step (three) cooling process.
In the step (), high-phosphorus manganese and the Fu Meng dreg chemistry composition of preparation silicomanganese mother liquor see Table 3;
High-phosphorus manganese and the Fu Meng dreg chemistry composition of table 3 preparation silicomanganese mother liquor
In the step (), the quality per distribution ratio of each raw material of preparation silicomanganese mother liquor sees Table 4;
The quality per distribution ratio of each raw material of table 4 preparation silicomanganese mother liquor
In the step (two), the quality proportioning of induction furnace dephosphorization and each raw material of alloying sees Table 5:
The quality proportioning of table 5 induction furnace dephosphorization and each raw material of alloying
| The silicomanganese mother liquor | The fine aluminium piece | GB trade mark FeV80A vanadium iron | Dephosphorizing agent | Slag former | |
| Embodiment 1 | 600.0Kg | 300.0Kg | 100.0Kg | 30.0Kg | 100.0Kg |
| Embodiment 2 | 650.0Kg | 220.0Kg | 130.0Kg | 26.0Kg | 39.0Kg |
| Embodiment 3 | 780.0Kg | 200.0Kg | 20.0Kg | 23.4Kg | 31.2Kg |
| Embodiment 4 | 450.0Kg | 400.0Kg | 150.0Kg | 45.0Kg | 22.5Kg |
In the step (two), the quality proportioning of each raw material of dephosphorizing agent sees Table 6
The quality proportioning of each raw material of table 6 dephosphorizing agent
| The aluminium scrap bits | Carbide of calcium | Calcium oxide | Calcium Fluoride (Fluorspan) | |
| Embodiment 1 | 3.0Kg | 18.0Kg | 6.0Kg | 3.0Kg |
| Embodiment 2 | 1.3Kg | 13.0Kg | 5.2Kg | 6.5Kg |
| Embodiment 3 | 2.8Kg | 13.6Kg | 5.8Kg | 1.2Kg |
| Embodiment 4 | 2.7Kg | 22.5Kg | 10.8Kg | 9.0Kg |
In the step (two), the quality proportioning of each raw material of slag former sees Table 7
The quality proportioning of each raw material of table 7 slag former
| Calcium oxide | Magnesium oxide | Silicon oxide | Calcium Fluoride (Fluorspan) | |
| Embodiment 1 | 55.0Kg | 20.0Kg | 30.0Kg | 5.0Kg |
| Embodiment 2 | 15.6Kg | 5.9Kg | 9.8Kg | 7.8Kg |
| Embodiment 3 | 21.5Kg | 0 | 4.7Kg | 5.0Kg |
| Embodiment 4 | 15.8Kg | 0 | 6.7Kg | 0 |
Each other processing parameter comprises in the step () silicomanganese mother liquor tap to tap time, basicity of slag; In the step (two) behind the dephosphorizing agent dephosphorisation reaction time, the calcium oxide of adding, magnesium oxide, silicon oxide, Calcium Fluoride (Fluorspan) account for the separately mass percent of total amount, again add the dephosphorisation reaction time behind the dephosphorizing agent; Vanadium iron smelting time in the step (two); Fine aluminium piece smelting time sees Table 8 in the step (two).
Other processing parameter of table 8
The concrete smelting process step of embodiment 1 is:
(1) silicomanganese mother liquor preparation:
Proportioning raw materials: manganese ore 3000.0Kg, rich manganese slag 3000.0kg, coke+blue charcoal 720.0Kg, silica 800.0Kg, Wingdale 400.0kg, rhombspar 80.0kg;
Preparation process: pour above-mentioned raw materials into the 12500KVA electrosmelting, the control basicity of slag is 0.8, and 1550 ℃～1600 ℃ of smelting temperatures, obtain the silicomanganese mother liquor at 180 minutes tap to tap time.
(2) dephosphorization and alloying
Proportioning raw materials: silicomanganese mother liquor 600.0Kg, fine aluminium piece 300.0Kg, the vanadium 100.0Kg of GB trade mark FeV80A, dephosphorizing agent are 5% of alloy mother liquor; Wherein, in the dephosphorizing agent: aluminium scrap bits 3.0Kg, carbide of calcium 18.0Kg, calcium oxide 6.0Kg, Calcium Fluoride (Fluorspan) 3.0Kg; The slag former consumption is 10% of raw material total mass, calcium oxide 55.0Kg wherein, magnesium oxide 20.0Kg, silicon oxide 30.0Kg, Calcium Fluoride (Fluorspan) 5.0Kg.
A: pour the induction furnace dephosphorization into after the alloy mother liquor slagging-off that step (1) is obtained, and add dephosphorizing agent.The dephosphorizing agent addition sequence is: at first add aluminium scrap bits, treat the fully fusing of aluminium scrap bits, add again calcium oxide in the dephosphorizing agent, Calcium Fluoride (Fluorspan), carbide of calcium separately total amount 50%, with alloy mother liquor reaction 5 minutes;
B: slagging-off after steps A is finished, add again remaining calcium oxide, Calcium Fluoride (Fluorspan) and carbide of calcium in the dephosphorizing agent, fully react secondary slagging-off after 6 minutes;
C: after step B finishes, add successively slag former and vanadium iron, 1600 ℃～1650 ℃ of smelting temperatures, smelting time is 10 minutes;
D: after the vanadium iron that step C adds melts fully, add the fine aluminium piece;
E: the abundant melting of fine aluminium piece that adds until step D is after 5 minutes, and calm 3 minutes, skim, be poured into copper mold or sand mo(u)ld;
(3) cooling process: will be through the alloy natural air cooling to 1300 of step (2) preparation ℃, atomized water spray rapid solidification to 550 ℃～600 ℃ again, then air cooling natural coagulation obtains the MnAlV alloy.
In the present embodiment, the aluminium scrap in dephosphorizing agent bits need be done after the clean 200 ℃ of dryings 2 hours; Carbide of calcium in dephosphorizing agent, the slag former, calcium oxide, magnesium oxide, Calcium Fluoride (Fluorspan) granularity≤3mm; The vanadium iron break process is to granularity≤10mm; The fine aluminium piece adopts a cube material piece, cuts into according to the induction furnace capacity and is of a size of 83～130mm.
The manganese base of the inventive method preparation contains the MnAlV alloy of vanadium can be stored in the three kinds of typical storage conditions in Chongqing City in table 9, thereby the storage condition that shows this alloy is less demanding, is convenient to deposit, and deposits above also efflorescence not occuring half a year.
Table 9 alloy is stable case under the typical case of Chongqing City weather condition
Aluminium, manganese, vanadium recovery rate that the manganese base that the inventive method is produced contains in the MnAlV alloy of vanadium are high, deposit under field conditions (factors) efflorescence can not occur in 6 months, thereby satisfy the industrial application requirement, are beneficial to extensively and promote the use of.
The composition of raw materials of other embodiment is different, but its smelting process is the same, is not repeated at this.
The alloy aluminum content that the inventive method is smelted is high, content of vanadium is high, and phosphorus content is low; In preparation process, select the aluminium block of appropriate size to enter stove, can improve aluminium recovery; Use aluminium scrap bits and the common dephosphorization under reducing atmosphere of carbide of calcium, dephosphorization rate is high; The alloy of preparation can be stored not efflorescence of Stability Analysis of Structures under various weather condition; Alloy possesses that deoxidizing capacity is strong, removal of impurity is high, alloying is effective and crystal grain thinning, precipitation strength, can improve crystalline texture and the carbide morphology of alloy, improves yield strength, tensile strength, the thermotolerance of steel, the performance of cold-workability.
Claims (2)
1. one kind contains the method for vanadium MnAlV alloy with high-phosphorus manganese smelting manganese base, it is characterized in that the quality percentage composition of each chemical ingredients is in the described alloy: Mn 30% ~ 50%, Al 20%～40%, and Si 10%～20%, and V 7%～10%, P≤0.08%, surplus are Fe and other impurity element;
Described alloy is taked " electric furnace+induction furnace " duplex practice smelting technology, specifically comprises the steps:
Step (one): preparation silicomanganese mother liquor;
Each raw material of preparation silicomanganese mother liquor is put into electric furnace, basicity of slag 0.5～1.0,1550 ℃ ~ 1600 ℃ of smelting temperatures, make the silicomanganese mother liquor at 180～240 minutes tap to tap time;
The quality per distribution ratio of each raw material of described preparation silicomanganese mother liquor is: mix manganese ore 60%-75%, silica 10%～15%, Wingdale 5%～10%, rhombspar 1%～5%, coke+blue charcoal 7%～15%; Described mixing manganese ore is: high-phosphorus manganese 50%～80%, rich manganese slag 20%～50%;
Step (two): induction furnace dephosphorization and alloying;
Preparation process: A: dephosphorization: after the silicomanganese mother liquor slagging-off that step () is obtained, in induction furnace, add the aluminium scrap bits in the dephosphorizing agent, after fusing enters aluminium alloy fully, add calcium oxide, Calcium Fluoride (Fluorspan) and carbide of calcium in the dephosphorizing agent, with alloy mother liquor reaction 5～10 minutes until aluminium scrap bits; The consumption of described carbide of calcium, calcium oxide and Calcium Fluoride (Fluorspan) for respectively estimate one's own ability 10%～70%;
B: after steps A is finished, remove the gred, add remaining calcium oxide, Calcium Fluoride (Fluorspan) and carbide of calcium in the dephosphorizing agent, fully react secondary slagging-off after 5～10 minutes;
C: after step B finishes, add successively slag former and vanadium iron, smelting temperature is 1600 ℃ ~ 1750 ℃, and smelting time is 10 ~ 20 minutes;
D: after step C vanadium iron melts fully, add the fine aluminium piece;
E: the abundant smelting time of fine aluminium piece that adds until step D is after 5 ~ 8 minutes, and calm 3 minutes, skim, be poured into copper mold or sand mo(u)ld;
In the raw material of step (two), silicomanganese mother liquor 45%～78%, fine aluminium piece 20%～40%, vanadium iron 2% ~ 15%;
Dephosphorizing agent is 3% ~ 10% of alloy mother liquor, and described dephosphorizing agent comprises aluminium scrap bits, carbide of calcium, calcium oxide and Calcium Fluoride (Fluorspan);
The slag former consumption is 3% ~ 10% of raw material total mass, and described slag former is two or more in calcium oxide, magnesium oxide, silicon oxide and the Calcium Fluoride (Fluorspan);
Step (three): cooling process
Will be through the alloy natural air cooling to 1300 of step (two) preparation ℃, atomized water spray rapid solidification to 550 ℃ ~ 600 ℃, then natural coagulation obtains the MnAlV alloy;
Described high-phosphorus manganese
,Its chemical ingredients is: T
Mn16%～35%, SiO
218%～22%, P/Mn 〉=0.007, surplus are iron and other impurity element;
Described rich manganese dreg chemistry composition: T
Mn35%～46%, SiO
220%～23%, Fe 1%～2%, and P 0.014%～0.020%, and S 0.1%～1.0%, and surplus is CaO, MgO, Al
2O
3And other impurity elements.
2. the method that contains as claimed in claim 1 vanadium MnAlV alloy with high-phosphorus manganese smelting manganese base, it is characterized in that the quality proportioning of each composition is in the described dephosphorizing agent: aluminium scrap bits 5%～12%, carbide of calcium 50%～60%, calcium oxide 20%～25%, Calcium Fluoride (Fluorspan) 5%～25%.
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| CN104611562B (en) * | 2015-01-08 | 2017-02-01 | 河北钢铁股份有限公司承德分公司 | Slag former and method for prolonging service life of furnace lining of ferrovanadium electric furnace in electro-silicothermic process |
| FI127451B (en) * | 2015-11-24 | 2018-06-15 | Outotec Finland Oy | Method and apparatus for preheating and smelting manganese ore sinter |
| CN105671247B (en) * | 2016-03-07 | 2017-10-27 | 重庆大学 | A kind of secondary refining method of silicomangan liquid powder dephosphorization |
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| EP0889144A1 (en) * | 1997-07-01 | 1999-01-07 | Max-Planck-Institut für Eisenforschung GmbH | Ligth structural steel and its application |
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| CN102061412A (en) * | 2011-01-30 | 2011-05-18 | 重庆大学 | Manganese-based MnAlSiTi alloy with high titanate content and preparation method thereof |
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