CN108048708A - A kind of preparation method of the anticorrosion aluminium material containing praseodymium and yttrium - Google Patents

A kind of preparation method of the anticorrosion aluminium material containing praseodymium and yttrium Download PDF

Info

Publication number
CN108048708A
CN108048708A CN201711476811.9A CN201711476811A CN108048708A CN 108048708 A CN108048708 A CN 108048708A CN 201711476811 A CN201711476811 A CN 201711476811A CN 108048708 A CN108048708 A CN 108048708A
Authority
CN
China
Prior art keywords
alloys
time
temperature
melt
yttrium
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
CN201711476811.9A
Other languages
Chinese (zh)
Other versions
CN108048708B (en
Inventor
闫洪
喻保标
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.)
Nanchang Univ
Original Assignee
Nanchang Univ
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Nanchang Univ filed Critical Nanchang Univ
Priority to CN201711476811.9A priority Critical patent/CN108048708B/en
Publication of CN108048708A publication Critical patent/CN108048708A/en
Application granted granted Critical
Publication of CN108048708B publication Critical patent/CN108048708B/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C21/00Alloys based on aluminium
    • C22C21/02Alloys based on aluminium with silicon as the next major constituent
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/026Alloys based on aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C1/00Making alloys
    • C22C1/02Making alloys by melting
    • C22C1/03Making alloys by melting using master alloys
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/002Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22FCHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
    • C22F1/00Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
    • C22F1/04Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
    • C22F1/043Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with silicon as the next major constituent

Abstract

A kind of preparation method of the anticorrosion aluminium material containing praseodymium and yttrium, according to mass percent dispensing:3.5 ~ 4.5wt.% of silicon, 0.5 ~ 1.0wt.% of magnesium, 0.2 ~ 0.4wt.% of praseodymium, 0.2 ~ 0.4wt.% of cerium, remaining is aluminium and inevitable impurity.The content of different elements in alloy is controlled, the content of particularly iron carrys out optimized alloy formula.After praseodymium and yttrium refining, the galvanic corrosion reaction between intermetallic compound and aluminum substrate in alloy is weakened, and does not influence the excellent attribute of alloy inherently.Two level solution treatment and low temperature aging processing are subsequently carried out to it so that the inert elements such as Cu, Fe fully dissolve, and are influenced so as to reduce further the galvanic corrosion between aluminium base and other active alloying elements.The corrosion resistance of alloy material of the present invention is substantially improved.

Description

A kind of preparation method of the anticorrosion aluminium material containing praseodymium and yttrium
Technical field
The invention belongs to technical field of metal material manufacture, and in particular to a kind of anticorrosion aluminium.
Background technology
Al-Si-Mg alloy densities are low, weldability is good, have good casting character, have after thermally treated reinforcing higher Intensity.Due to the α-Al in Al-Si-Mg alloys8Fe2Si and β-Al5The corrosion potential ratio of FeSi intermetallic compounds in the seawater α-Al matrix is high, therefore can cause Al-Si-Mg alloys that local corrosion erosion occurs in the seawater.And the generation of local corrosion is very big Limit application of the Al-Si-Mg alloys in marine environment.
So far, mainly have to Al-Si-Mg alloys method of refining:Add rare earth or alkaline earth element, electromagnetic agitation ultrasound Ripple processing.However in above-mentioned method, addition rare-earth refining method and technology is easy to operate, and equipment requirement is low, is conducive to extensive Production, and rare-earth refining method causes the microstructure of alloy and mechanical performance to be all far superior to matrix.In addition, at solid solution aging It manages and is also commonly used for improving aluminium alloy capability as a kind of cost effective method for the advantages that improving toughness and etch resistant properties.And the present invention Using double_stage guide processing mode, material is made to undergo two stages of low temperature and high temperature.Low melting point mutually dissolves first when low temperature is dissolved, It prevents that burning and fusing occurs during high temperature.Second Phase Particle is dissolved during high temperature solid solution, improves alloy degree of supersaturation.
It is CN104711460B in publication number, it is entitled:" a kind of titaniferous anticorrosion aluminium and its treatment process " In.Do not consider the melting order and smelting time of part different-alloy element in fusion process, and without overheat after refining Treatment process carries out internal stress elimination to it.
It is CN103966483B in publication number, it is entitled:In " a kind of corrosion-resistant automobile aluminum alloy sheet ".First melt Refining nebulisation operation prepares alloy micron powder, after alloy powder melting and is added in refining agent and refined again, finally pass through again Multistage cold treatment obtains corrosion-resistant automobile aluminum alloy sheet.Its new technology, but multistage cold treatment and heat treatment It compares, heat treatment procedure is relatively simple, convenient for actual production.
It is CN105112738B in publication number, it is entitled:" the preparation process of high-strength corrosion-resisting aluminium alloy and high-strength Spend anticorrosion aluminium " in.In the method that high temperature refinery is combined with solution treatment, high-strength corrosion-resisting aluminium alloy is obtained.So And simple high temperature refinery is with solution treatment that time-consuming, if added in refining process micro refining agent will greatly shorten refining with Solution time.
It is CN104962786B in publication number, it is entitled:In " a kind of anticorrosion aluminium ally section ".During using two level Effect processing carries out the section bar after horizontal casting to be thermally treated resulting in anticorrosion aluminium ally section.It is before secondary time effect without solid Molten processing obtains uniform supersaturated solid solution and directly carries out artificial aging, be unfavorable for during later stage timeliness the precipitation of hardening constituent and The elimination of hot-working early period internal stress.
Therefore, in conclusion still lacking in anticorrosion aluminium ally section preparation shaping technical aspect a kind of cost-effective Scheme.And mischmetal Pr+Ce elements enhance Al-Si-Mg cast aluminium alloy golds the influence of its corrosion resistance and have not been reported, Therefore with larger researching value.
The content of the invention
The purpose of the present invention is to propose to a kind of preparation methods of the anticorrosion aluminium material containing praseodymium and yttrium.
The present invention is achieved by the following technical solutions.
A kind of preparation method of anticorrosion aluminium material containing praseodymium and yttrium of the present invention, feature include following step Suddenly.
(1)Its each element mass percentage composition is:6.5 ~ 7.5wt.% of silicon, 0.5 ~ 1.0wt.% of magnesium, praseodymium 0.2 ~ 0.4wt.%, 0.2 ~ 0.4wt.% of yttrium, remaining is aluminium and inevitable impurity;The inevitable impurity summation is in the alloy Content be no more than 0.35wt.%, and in the inevitable impurity content of iron in the alloy be no more than 0.2wt.%.
(2)The fine aluminium ingot of certain mass in the corundum crucible that smelting temperature is 700 ~ 720 DEG C is melted, keeps the temperature 5 ~ 10 points Clock.
(3)By step(2)Furnace temperature rises to 810 ~ 830 DEG C, is then equally divided into the Al-10Si alloys of prebake several etc. Part is added in the melt after heating, and the amount for adding in Al-10Si alloys every time is 1.0 ~ 2.5wt.% of melt gross mass.Add every time It is stirred after entering using two-blade stirrer, stands heat preservation 5 ~ 10 minutes after all adding in, which is passed through argon gas and is protected.
(4)The Al-10Mg alloys of prebake are equally divided into several equal portions and add in step(3)In the melt, every time The amount for adding in Al-10Mg alloys is 0.2 ~ 0.5wt.% of melt gross mass.It is stirred after adding in every time using two-blade stirrer, Heat preservation 5 ~ 10 minutes are stood after all adding in, which is passed through argon gas and is protected.
(5)A refining procedures are performed, the Al-10Pr alloys of prebake are equally divided into several equal portions adds in step(4)Institute In the melt stated, the amount for adding in Al-10Pr alloys every time is 0.1 ~ 0.2wt.% of melt gross mass.It is carried out after adding in every time It is ultrasonically treated, ultrasonic power is 650 ~ 700W, and supersonic frequency is 25000 ~ 30000Hz, and ultrasonic time adds with Al-10Pr alloys Dosage direct proportionality, and the additive amount of Al-10Pr alloys often increases by 2 ~ 3min of 0.1wt.% ultrasonic times increase., all add Heat preservation 15 ~ 25 minutes are stood after entering.The process is passed through argon gas and is protected.
(6)The Al-10Y alloys of prebake are equally divided into several equal portions and add in step(4)In the melt, add every time The amount for entering Al-10Y alloys is 0.1 ~ 0.2wt.% of melt gross mass.It is ultrasonically treated after adding in every time, ultrasonic power is 650 ~ 700W, supersonic frequency are the additive amount direct proportionality of 25000 ~ 30000Hz, ultrasonic time and Al-10Y alloys, and The additive amount of Al-10Y alloys, which often increases 0.1wt.% ultrasonic times, increases by 2 ~ 3min., 20 ~ 30 points of heat preservation is stood after all adding in Clock.The process is passed through argon gas and is protected;Gained blend melt is skimmed after stirring is stood, sampling analysis after skimming, Melt after ingredient qualification is poured into mold cooling, obtains a kind of anticorrosion aluminium containing praseodymium and yttrium.
(7)To step(6)A kind of obtained anticorrosion aluminium semi-finished product containing praseodymium and yttrium, which are placed in resistance furnace, carries out Level-one solution treatment, solid solution temperature is 440 ± 3 DEG C, when soaking time 2.5 ~ 3.5 is small, is put into temperature rapidly afterwards as 60 ~ 70 It is cooled down in DEG C water.
(8)To step(7)It obtains material and is placed in progress second level solution treatment, solid solution temperature 480 in resistance furnace ± 3 DEG C, when soaking time 2.5 ~ 3.5 is small, temperature is put into rapidly afterwards to be cooled down in 60 ~ 70 DEG C of water.
(9)By step(8)The material of gained carries out ageing treatment at a temperature of being placed in 125 ± 3 DEG C, aging time is small for 5 ~ 6 When, it is then air-cooled to obtain a kind of anticorrosion aluminium containing praseodymium and yttrium.
Further, step of the present invention(7)The solution treatment environment is:Using particle circle sand hill cover it is a kind of containing praseodymium and The anticorrosion aluminium of yttrium ensures to be heated evenly;Secondly solid solubility temperature is 440 ± 3 DEG C, and heating rate is 30 ~ 50 DEG C/min;It protects When the warm time is 2.5 ~ 3.5 small, alloy semi-finished product are just placed in stove since room temperature.
Further, step of the present invention(8)The solution treatment environment is:Using particle circle sand hill cover it is a kind of containing praseodymium and The anticorrosion aluminium of yttrium ensures to be heated evenly;Secondly solid solubility temperature is 480 ± 3 DEG C, and heating rate is 20 ~ 35 DEG C/min;It protects When the warm time is 2.5 ~ 3.5 small, alloy semi-finished product are just placed in stove since room temperature.
Further, step of the present invention(9)The ageing treatment environment is:Solid solution is covered using particle circle sand hill A kind of treated anticorrosion aluminium containing praseodymium and yttrium, ensures to be heated evenly;Secondly solid solubility temperature is 125 ± 3 DEG C, heating speed Rate is 20 ~ 30 DEG C/min;When soaking time 5 ~ 6 is small, alloy semi-finished product are just placed in stove since room temperature.
The present invention weakens α-Al in alloy using rare earth Pr+Y refining techniques8Fe2Si and β-Al5Change between the metals such as FeSi The galvanic corrosion closed between object and aluminum substrate reacts, and does not influence the excellent attribute of Al-Si-Mg alloys inherently.It is subsequent Targetedly fixation rates cause the inert elements such as Fe fully to dissolve so that microcosmic group of Al-Si-Mg-Pr-Ce alloys It knits to form " big anode-small cathode " phenomenon, is further reduced galvanic corrosion influence so that the corrosion resistant of Al-Si-Mg-Pr-Ce alloys Corrosion can be substantially improved.The result shows that the Al-Si-Mg systems promotion 1.5 that the corrosion resistance of alloy of the embodiment of the present invention is more common ~ 3 times.
The present invention has following uniqueness:(1)Aluminium alloy extrusions produced by the present invention has outstanding resislance to corrosion from sea water Can, the application in marine environment can be met;(2)The present invention can make rare earth Pr+Y α-Al in the alloy8Fe2Si and β- Al5The intermetallic compounds such as FeSi surface forms one layer of mischmetal coating film, hinders etching electronic flowing;(3)The present invention can So that Al-Si-Mg-Pr-Ce alloys microstructure forms " big anode-small cathode " phenomenon, galvanic corrosion influence is further reduced; (4)Safe operation of the present invention is simple, low for equipment requirements, and manufacture cost is greatly reduced.
Specific embodiment
The present invention will be described further by following embodiment.
Embodiment 1.
(1)According to silicon 6.5wt.%, magnesium 0.5wt.%, praseodymium 0.2wt.%, yttrium 0.2wt.%, remaining is al proportion, takes work respectively Industry fine aluminium ingot, Al-10Si alloys, Al-10Mg alloys, Al-10Pr alloys and Al-10Y alloys are put into vacuum drying box, drying temperature It spends for 70 DEG C, drying time 60 minutes.
(2)One corundum crucible of interior placement in the tube furnace of high-purity argon atmosphere protection, and fine aluminium ingot is added in, smelting temperature is 700 DEG C, keep the temperature 5 minutes.
(3)By step(2)In furnace temperature rise to 810 DEG C, then by step(1)The Al-10Si alloys of gained prebake are put down It is divided into the melt after several equal portions add in heating, so adds in the amount of Al-10Si alloys every time as melt gross mass 1.0wt.%.High-temperature alloy steel two-blade stirrer is used to be stirred 1 minute with 30 revs/min of rates after adding in every time, is all added Heat preservation 5 minutes are stood after entering.The process is passed through argon gas and is protected, argon flow amount 20L/min, argon pressure 0.45MPa.
(4)The Al-10Mg alloys of prebake are equally divided into several equal portions and add in step(3)In the melt, every time The amount for adding in Al-10Mg alloys is the 1.0wt.% of melt gross mass.It is stirred after adding in every time using high-temperature alloy steel double leaf Device is stirred 1 minute with 30 revs/min of rates, and heat preservation 5 minutes are stood after all adding in.The process is passed through argon gas and is protected, argon Throughput is 20L/min, argon pressure 0.4MPa.
(5)The Al-10Pr alloys of prebake are equally divided into several equal portions and add in step(4)In the melt, every time The amount for adding in Al-10Pr alloys is the 0.2wt.% of melt gross mass.It is ultrasonically treated after adding in every time, ultrasonic power is 670W, supersonic frequency 27000Hz, ultrasonic time 6min stand heat preservation 20 minutes after all adding in.The process is passed through argon gas It is protected, argon flow amount 25L/min, argon pressure 0.4MPa.
(6)The Al-10Y alloys of prebake are equally divided into several equal portions and add in step(5)In the melt, so every time The amount for adding in Al-10Y alloys is the 0.2wt.% of melt gross mass.It is ultrasonically treated after adding in every time, ultrasonic power is 670W, supersonic frequency 27000Hz, ultrasonic time 6min stand heat preservation 25 minutes after all adding in.The process is passed through argon gas It is protected, argon flow amount 25L/min, argon pressure 0.4MPa.
(7)Step(6)Gained blend melt is skimmed after stirring is stood, sampling analysis after skimming, by ingredient Melt after qualification pours into mold cooling, obtains a kind of anticorrosion aluminium semi-finished product containing lanthanum and yttrium.
(8)To step(7)A kind of obtained anticorrosion aluminium semi-finished product containing praseodymium and yttrium, which are placed in resistance furnace, carries out Level-one solution treatment, solid solution temperature are 437 DEG C, and heating rate is 30 DEG C, when soaking time 2.5 is small, is put into temperature rapidly afterwards It spends to cool down in 60 DEG C of water.
(9)To step(8)It obtains material and is placed in progress second level solution treatment, solid solution temperature 477 in resistance furnace DEG C, heating rate is 50 DEG C, when soaking time 2.5 is small, is put into temperature rapidly afterwards to be cooled down in 60 DEG C of water.
(10)By step(9)The material of gained carries out ageing treatment at a temperature of being placed in 122 DEG C, heating rate is 18 DEG C, when It is then air-cooled to obtain a kind of anticorrosion aluminium containing lanthanum and yttrium when the effect time is 5 small.
Embodiment 2.
(1)According to silicon 7.0wt.%, magnesium 0.75wt.%, praseodymium 0.3wt.%, yttrium 0.3wt.%, remaining is al proportion, takes work respectively Industry fine aluminium ingot, Al-10Si alloys, Al-10Mg alloys, Al-10Pr alloys and Al-10Y alloys are put into vacuum drying box, drying temperature It spends for 70 DEG C, drying time 60 minutes.
(2)One corundum crucible of interior placement in the tube furnace of high-purity argon atmosphere protection, and fine aluminium ingot is added in, smelting temperature is 710 DEG C, keep the temperature 7 minutes.
(3)By step(2)In furnace temperature rise to 820 DEG C, then by step(1)The Al-10Si alloys of gained prebake are put down It is divided into the melt after several equal portions add in heating, so adds in the amount of Al-10Si alloys every time as melt gross mass 2.0wt.%.High-temperature alloy steel two-blade stirrer is used to be stirred 1 minute with 30 revs/min of rates after adding in every time, is all added Heat preservation 5 minutes are stood after entering.The process is passed through argon gas and is protected, argon flow amount 20L/min, argon pressure 0.45MPa.
(4)The Al-10Mg alloys of prebake are equally divided into several equal portions and add in step(3)In the melt, every time The amount for adding in Al-10Mg alloys is the 1.5wt.% of melt gross mass.It is stirred after adding in every time using high-temperature alloy steel double leaf Device is stirred 1 minute with 30 revs/min of rates, and heat preservation 7 minutes are stood after all adding in.The process is passed through argon gas and is protected, argon Throughput is 20L/min, argon pressure 0.4MPa.
(5)The Al-10Pr alloys of prebake are equally divided into several equal portions and add in step(4)In the melt, every time The amount for adding in Al-10Pr alloys is the 0.2wt.% of melt gross mass.It is ultrasonically treated after adding in every time, ultrasonic power is 670W, supersonic frequency 27000Hz, ultrasonic time 6min stand heat preservation 20 minutes after all adding in.The process is passed through argon gas It is protected, argon flow amount 25L/min, argon pressure 0.4MPa.
(6)The Al-10Y alloys of prebake are equally divided into several equal portions and add in step(5)In the melt, so every time The amount for adding in Al-10Y alloys is the 0.2wt.% of melt gross mass.It is ultrasonically treated after adding in every time, ultrasonic power is 670W, supersonic frequency 27000Hz, ultrasonic time 6min stand heat preservation 25 minutes after all adding in.The process is passed through argon gas It is protected, argon flow amount 25L/min, argon pressure 0.4MPa.
(7)Step(6)Gained blend melt is skimmed after stirring is stood, sampling analysis after skimming, by ingredient Melt after qualification pours into mold cooling, obtains a kind of anticorrosion aluminium semi-finished product containing lanthanum and yttrium.
(8)To step(7)A kind of obtained anticorrosion aluminium semi-finished product containing lanthanum and yttrium, which are placed in resistance furnace, carries out Level-one solution treatment, solid solution temperature are 440 DEG C, and heating rate is 40 DEG C, when soaking time 3 is small, is put into temperature rapidly afterwards To be cooled down in 65 DEG C of water.
(9)To step(8)It obtains material and is placed in progress second level solution treatment, solid solution temperature 480 in resistance furnace DEG C, heating rate is 60 DEG C, when soaking time 3 is small, is put into temperature rapidly afterwards to be cooled down in 65 DEG C of water.
(10)By step(9)The material of gained carries out ageing treatment at a temperature of being placed in 125 DEG C, heating rate is 23 DEG C, when It is then air-cooled to obtain a kind of anticorrosion aluminium containing lanthanum and yttrium when the effect time is 5.5 small.
Embodiment 3.
(1)According to silicon 7.5wt.%, magnesium 1.0wt.%, praseodymium 0.4wt.%, yttrium 0.4wt.%, remaining is al proportion, takes work respectively Industry fine aluminium ingot, Al-10Si alloys, Al-10Mg alloys, Al-10Pr alloys and Al-10Y alloys are put into vacuum drying box, drying temperature It spends for 70 DEG C, drying time 60 minutes.
(2)One corundum crucible of interior placement in the tube furnace of high-purity argon atmosphere protection, and fine aluminium ingot is added in, smelting temperature is 720 DEG C, keep the temperature 10 minutes.
(3)By step(2)In furnace temperature rise to 830 DEG C, then by step(1)The Al-10Si alloys of gained prebake are put down It is divided into the melt after several equal portions add in heating, so adds in the amount of Al-10Si alloys every time as melt gross mass 2.5wt.%.High-temperature alloy steel two-blade stirrer is used to be stirred 1 minute with 30 revs/min of rates after adding in every time, is all added Heat preservation 10 minutes are stood after entering.The process is passed through argon gas and is protected, argon flow amount 20L/min, and argon pressure is 0.45MPa。
(4)The Al-10Mg alloys of prebake are equally divided into several equal portions and add in step(3)In the melt, every time The amount for adding in Al-10Mg alloys is the 2.0wt.% of melt gross mass.It is stirred after adding in every time using high-temperature alloy steel double leaf Device is stirred 1 minute with 30 revs/min of rates, and heat preservation 10 minutes are stood after all adding in.The process is passed through argon gas and is protected, argon Throughput is 20L/min, argon pressure 0.4MPa.
(5)The Al-10Pr alloys of prebake are equally divided into several equal portions and add in step(4)In the melt, every time The amount for adding in Al-10Pr alloys is the 0.3wt.% of melt gross mass.It is ultrasonically treated after adding in every time, ultrasonic power is 700W, supersonic frequency 30000Hz, ultrasonic time 9min stand heat preservation 25 minutes after all adding in.The process is passed through argon gas It is protected, argon flow amount 25L/min, argon pressure 0.4MPa.
(6)The Al-10Y alloys of prebake are equally divided into several equal portions and add in step(5)In the melt, so every time The amount for adding in Al-10Y alloys is the 0.3wt.% of melt gross mass.It is ultrasonically treated after adding in every time, ultrasonic power is 700W, supersonic frequency 30000Hz, ultrasonic time 9min stand heat preservation 30 minutes after all adding in.The process is passed through argon gas It is protected, argon flow amount 25L/min, argon pressure 0.4MPa.
(7)Step(8)Gained blend melt is skimmed after stirring is stood, sampling analysis after skimming, by ingredient Melt after qualification pours into mold cooling, obtains a kind of anticorrosion aluminium semi-finished product containing lanthanum and yttrium.
(8)To step(7)A kind of obtained anticorrosion aluminium semi-finished product containing lanthanum and yttrium, which are placed in resistance furnace, carries out Level-one solution treatment, solid solution temperature are 443 DEG C, and heating rate is 50 DEG C, when soaking time 3.5 is small, is put into temperature rapidly afterwards It spends to cool down in 70 DEG C of water.
(9)To step(8)It obtains material and is placed in progress second level solution treatment, solid solution temperature 483 in resistance furnace DEG C, heating rate is 70 DEG C, when soaking time 3.5 is small, is put into temperature rapidly afterwards to be cooled down in 70 DEG C of water.
(10)By step(9)The material of gained carries out ageing treatment at a temperature of being placed in 128 DEG C, heating rate is 25 DEG C, when It is then air-cooled to obtain a kind of anticorrosion aluminium containing lanthanum and yttrium when the effect time is 6 small.

Claims (4)

1. a kind of preparation method of the anticorrosion aluminium material containing praseodymium and yttrium, feature comprise the following steps:
Its each element mass percentage composition is:6.5 ~ 7.5wt.% of silicon, 0.5 ~ 1.0wt.% of magnesium, 0.2 ~ 0.4wt.% of praseodymium, yttrium 0.2 ~ 0.4wt.%, remaining is aluminium and inevitable impurity;The content of the inevitable impurity summation in the alloy is no more than 0.35wt.%, and the content of iron in the alloy is no more than 0.2wt.% in the inevitable impurity;
First the fine aluminium ingot of certain mass in the corundum crucible that smelting temperature is 700 ~ 720 DEG C is melted, keeps the temperature 5 ~ 10 minutes;
Afterwards by step(2)Furnace temperature rises to 810 ~ 830 DEG C, and the Al-10Si alloys of prebake then are equally divided into several deciles adds Enter in the melt after heating, the amount for adding in Al-10Si alloys every time is 1.0 ~ 2.5wt.% of melt gross mass;After adding in every time It is stirred using two-blade stirrer, stands heat preservation 5 ~ 10 minutes after all adding in, which is passed through argon gas and is protected;
The Al-10Mg alloys of prebake are equally divided into several deciles and add in step(3)In the melt, Al- is added in every time The amount of 10Mg alloys is 0.2 ~ 0.5wt.% of melt gross mass;It is stirred using two-blade stirrer after adding in every time, all added in Heat preservation 5 ~ 10 minutes are stood afterwards, which is passed through argon gas and is protected;
A refining procedures are performed, the Al-10Pr alloys of prebake are equally divided into several deciles adds in step(4)The melt Interior, the amount for adding in Al-10Pr alloys every time is 0.1 ~ 0.2wt.% of melt gross mass;It is ultrasonically treated after adding in every time, Ultrasonic power is 650 ~ 700W, and supersonic frequency is 25000 ~ 30000Hz, and the additive amount of Al-10Pr alloys is melt gross mass During 0.1wt.% ultrasonic time be 2 ~ 3min, and the additive amount of Al-10Pr alloys often increase 0.1wt.% ultrasonic times increase by 2 ~ 3min stands heat preservation 15 ~ 25 minutes after all adding in;The process is passed through argon gas and is protected;
The Al-10Y alloys of prebake are equally divided into several deciles and add in step(4)In the melt, Al- is added in every time The amount of 10Y alloys is 0.1 ~ 0.2wt.% of melt gross mass;Be ultrasonically treated after adding in every time, ultrasonic power for 650 ~ 700W, supersonic frequency is 25000 ~ 30000Hz, when the additive amount of Al-10Y alloys is the 0.1wt.% of melt gross mass during ultrasound Between for 2 ~ 3min, and the additive amount of Al-10Y alloys often increases 0.1wt.% ultrasonic times increases by 2 ~ 3min, is stood after all adding in Heat preservation 20 ~ 30 minutes;The process is passed through argon gas and is protected;Gained blend melt is skimmed after stirring is stood, and is skimmed Melt after ingredient qualification is poured into mold cooling, obtains a kind of anticorrosion aluminium containing praseodymium and yttrium by sampling analysis afterwards;
To step(6)A kind of obtained anticorrosion aluminium semi-finished product containing praseodymium and yttrium are placed in progress first order solid solution in resistance furnace Processing, solid solution temperature is 440 ± 3 DEG C, and when soaking time 2.5 ~ 3.5 is small, it is cold in 60 ~ 70 DEG C of water to be put into temperature rapidly afterwards But;
To step(7)It obtains material and is placed in progress second level solution treatment in resistance furnace, solid solution temperature is 480 ± 3 DEG C, is protected When warm time 2.5 ~ 3.5 is small, temperature is put into rapidly afterwards to be cooled down in 60 ~ 70 DEG C of water;
By step(8)The material of gained carries out ageing treatment at a temperature of being placed in 125 ± 3 DEG C, when aging time is 5 ~ 6 small, then It is air-cooled to obtain a kind of anticorrosion aluminium containing praseodymium and yttrium.
2. preparation method according to claim 1, it is characterized in that step(7)The solution treatment environment is:Using Grain circle sand hill covers a kind of anticorrosion aluminium containing praseodymium and yttrium;Solid solubility temperature be 440 ± 3 DEG C, heating rate for 30 ~ 50 DEG C/ min;When soaking time is 2.5 ~ 3.5 small, alloy semi-finished product are just placed in stove since room temperature.
3. preparation method according to claim 1, it is characterized in that step(8)The solution treatment environment is:Using Grain circle sand hill covers a kind of anticorrosion aluminium containing praseodymium and yttrium;Solid solubility temperature be 480 ± 3 DEG C, heating rate for 20 ~ 35 DEG C/ min;When soaking time is 2.5 ~ 3.5 small, alloy semi-finished product are just placed in stove since room temperature.
4. preparation method according to claim 1, it is characterized in that step(9)The ageing treatment environment is: A kind of anticorrosion aluminium containing praseodymium and yttrium after solution treatment is covered using particle circle sand hill;Solid solubility temperature is 125 ± 3 DEG C, is risen Warm rate is 20 ~ 30 DEG C/min;When soaking time 5 ~ 6 is small, alloy semi-finished product are just placed in stove since room temperature.
CN201711476811.9A 2017-12-29 2017-12-29 Preparation method of praseodymium and yttrium-containing corrosion-resistant aluminum alloy material Active CN108048708B (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201711476811.9A CN108048708B (en) 2017-12-29 2017-12-29 Preparation method of praseodymium and yttrium-containing corrosion-resistant aluminum alloy material

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201711476811.9A CN108048708B (en) 2017-12-29 2017-12-29 Preparation method of praseodymium and yttrium-containing corrosion-resistant aluminum alloy material

Publications (2)

Publication Number Publication Date
CN108048708A true CN108048708A (en) 2018-05-18
CN108048708B CN108048708B (en) 2020-05-19

Family

ID=62129449

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201711476811.9A Active CN108048708B (en) 2017-12-29 2017-12-29 Preparation method of praseodymium and yttrium-containing corrosion-resistant aluminum alloy material

Country Status (1)

Country Link
CN (1) CN108048708B (en)

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104805340A (en) * 2015-05-21 2015-07-29 广西友合铝材有限公司 Rare earth aluminium-magnesium-silicon alloy material and preparation method thereof
CN105441737A (en) * 2015-12-01 2016-03-30 上海交通大学 High-strength high-corrosion-resistance cast aluminum alloy and gravity casting manufacturing method thereof
CN107119216A (en) * 2017-06-27 2017-09-01 中南大学 A kind of high-strength corrosion-resistant erosion aluminium alloy and preparation method thereof

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104805340A (en) * 2015-05-21 2015-07-29 广西友合铝材有限公司 Rare earth aluminium-magnesium-silicon alloy material and preparation method thereof
CN105441737A (en) * 2015-12-01 2016-03-30 上海交通大学 High-strength high-corrosion-resistance cast aluminum alloy and gravity casting manufacturing method thereof
CN107119216A (en) * 2017-06-27 2017-09-01 中南大学 A kind of high-strength corrosion-resistant erosion aluminium alloy and preparation method thereof

Also Published As

Publication number Publication date
CN108048708B (en) 2020-05-19

Similar Documents

Publication Publication Date Title
CN105463269B (en) High-strength, highly corrosion resistant cast aluminium alloy gold and its compression casting preparation method
US7854252B2 (en) Method of producing a castable high temperature aluminum alloy by controlled solidification
US7935304B2 (en) Castable magnesium alloys
US6824737B2 (en) Casting alloy
Qin et al. Semisolid microstructure of Mg2Si/Al composite by cooling slope cast and its evolution during partial remelting process
CN100557053C (en) High-strength high-ductility corrosion Al-Zn-Mg-(Cu) alloy
CN105296818A (en) Aluminum alloy and preparation method and application thereof
CN104561689B (en) Heat-resistant cast aluminum alloy and extrusion casting method thereof
Birol Impact of grain size on mechanical properties of AlSi7Mg0. 3 alloy
WO2015169163A1 (en) Aluminum alloy and method of preparing the same
CN101629251B (en) Method for smelting high-silicon aluminum alloy
CN104630578B (en) High plasticity alloy cast aluminum and its gravitational casting preparation method
KR101367892B1 (en) Magnesium alloy for high temperature and manufacturing method thereof
CN102717205B (en) Aluminium-alloy welding wire and preparation method thereof
CN106350716B (en) A kind of high intensity appearance member aluminum alloy materials and preparation method thereof
US20060011321A1 (en) Aluminum diecasting alloy
CN102943193B (en) Grain refinement machining process of hard aluminium alloy cast ingot
US9085815B2 (en) Magnesium alloy for room temperature and manufacturing method thereof
El-Bagoury et al. Effect of various heat treatment conditions on microstructure of cast polycrystalline IN738LC alloy
CN101775530B (en) Hypereutectic al-si alloy piston material
CN106399781B (en) A kind of high-strength corrosion-resisting rare earth aluminum alloy material and preparation method
US7718118B2 (en) Creep resistant magnesium alloy with improved ductility and fracture toughness for gravity casting applications
CN1291053C (en) High strength casted aluminium silicon series alloy and its preparation method
US9180515B2 (en) Magnesium alloy and magnesium-alloy cast product
CN102978458B (en) Al-Fe-Si-B-RE aluminum alloy, and preparation method and power cable thereof

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant